Welcome to the "ARRL News-Features" update from Big Island ARRL News. We already have a radio on 40 meters, using a Buckmaster OCF 4-band hi-power dipole and a SB-220 amp. Deprecated: Function create_function() is deprecated in /home/chesap19/public_html/hendersonillustration. You can also tweet your questions before or during. com information at Website Informer. this horizontal “slot” antenna, cut into the reflector of a tv dish, is both the master of disguise and high in performance. best top 10 duplexer for radio repeater duplexer list and get free shipping. Free Shipping. 4000, October 1996, "prohibits restrictions that impair… antennas used to receive video…. It works well for an area with antenna restrictions but is what I would call a compromised antenna. Slot antennas are familiar in the commercial radio world, but not to hams. also you need to license all the radios you intend to communicate with, not just your own unit, license is for the radio not the operator. OSVersion: Microsoft Windows NT 6. The winning article for the December 2019 Q ST Cover Plaque award is “Slot Cube Antenna for 6 Meters” by John Portune, W6NBC. Unlike the HF bands, most VHF antennas will cover the whole band segment without the need to retune. PS: Want to support The Daily Antenna? Please start your Amazon shopping here. The antenna wire lengths before trimming are 5. John Portune, W6NBC https://w6nbc. The all new Force 12 Flagpole Antenna line, designed by QST author John Portune, W6NBC, are selling extremely well and helping a lot of hams with HOA deed restrictions or who just want a 'low visual footprint' get on the air. Requirements for the 2018 QST Antenna Design Competition included an antenna for one or more bands between 2200 meters and 10 meters that could fit within a 30 × 50 foot area and be […]. The presenter, W6NBC built a magnifier so we could see the screen. 3''LCD Touching Screen,Measuring S-Parameter Voltage SWR, Phase, delay, Smith Chart at Amazon. How to Use Your Antenna Tuner by Scott - N4ZOU. An open antenna circuit is just as bad as a shorted one, and improper connector installation can cause both scenarios. I've never tried, but you should be able to add a 70cm element into that dish without too much difficulty. This means that the antenna signals (in N1BYT's design, where the antenna load Z1 is an untuned inductance) encounter the non-linear active device without the benefit of filtering and thus AM blanketing or IMD are more likely to occur than in a receiver where the antenna signals are first filtered by the oscillator's tank. ' exposed to the air at that location require conductor is cross-connected to the outer While it is difficult to estimate the actual. The advantage over a simple dipole is that it works on 160 meters even though it is only 140 feet long instead of the 246 feet needed for a 160-meter dipole. You can also tweet your questions before or during. The winning article for the December 2019 Q ST Cover Plaque award is "Slot Cube Antenna for 6 Meters" by John Portune, W6NBC. The traditional T-Piece phasing is critical, and will detune the notch cavities. clearances over bridges 5. " To the neighbors, ham antennas are "eyesores. John can be reached at W6NBC. But does the duplexer have to provide all these150 dB of isolation? Actually it doesn't, and this is an important repeater concept. Ground-plane Antennas for 144, 222 and 440MHz For the FM operator living in the primary coverage area of a repeate r, the ease of construction and low cost of a 1/4-λ ground-plane antenna make it an ideal choice. John Portune, W6NBC is here to talk about the challenges of having antennas in HOA restricted areas, and how antennas can blend in with the surroundings. The CHA SPIDER ASB is an octagon-shaped Antenna Spoke Base designed to allow mounting of four dipole antennas that use the standard 3/8” x 24 stud ant Read more. It has gain and wave angle comparable to a full-sized ¼λ ground plane antenna with radials By John Portune W6NBC I wanted high efficiency 40 Meter antenna with low-angle radiation. Excellent radio club DIY meeting project. php on line 143. Federal Communications Commission. The main category is Antennas for 2 meters band that is about Antenna projects for 144 MHz. This is more work but the best. Both custom designed as smarter, stronger, and more elegant multi-band options covering every frequency from 1. 2m Projects - Directional Antennas. It certainly was low profile, but not exactly discrete, and made no sense to me. He recently moved to an apartment building, losing the large back yard antenna at his previous residence. 3 Ron Harger, WD8BCS, described multiple retractable tape measures used as ground radials for a temporary vertical antenna installation. High Performance 40 Meters Vertical. com ARRL会员John Portune, W6NBC, 在1960年获得俄勒冈州立大学的物理理学士学位,于1961年获得他的FCC商业一般无线电话许可证,于1965年获得业余无线电. pdf Biquad for two meters and 440-MHZ by KE4UYP This is a vertically polarized Broadside and Collinear Array each Loop is a vertically polarized Broadside Array both the right and the left side of the Loop is a bent 1/2 wave dipole working 180 degrees out of phase with the other one and that gives you 4. This is more work but the best. Big TV antennas are pretty broadband and have fairly high gain. SHF YAGI-BEAM-ANTENNAS 13CM-23CM. A vertical seemed the obvious answer, a naturally low-angle radiator. clearances over bridges 5. Current ham radio news Southgate ARC - Members of the Roanoke Valley Amateur Radio Club will be participating in the National Amateur Radio Winter Field Day Exercise, January 25 and 26, 2020. readily accessible parts b. Duplexers A duplexer is a 3-port radio frequency (RF) filter component which is used in frequency division duplexed (FDD) systems to enable antenna sharing between the transmit and receive paths of a radio system. Photo: Direction finding loop antenna for 2 meter band, similar to one described in "A Uniquely Tuned 2 Meter Transmitter Hunting Loop" by John Portune, W6NBC, QST, January 2013, pp. Purchasing this type of antenna at a store will cost you at least $40. The winning article for the December 2019 Q ST Cover Plaque award is “Slot Cube Antenna for 6 Meters” by John Portune, W6NBC. I really like a lot of the aspects of this antenna design, I just hated making the traps (and they aren't quite tuned as well as I would like), but in the end I want an antenna that will fit in my (long, but not roomy) attic. Specifically how it applies to Ham Radio. pdf: 55M: 24-Sep-2013 23:05: Antenna Theory_ Analysis and Design_ 3rd ed. OSVersion: Microsoft Windows NT 6. Be sure to tune in to hear his ideas and call with your questions! Be sure to CALL in with your questions and comments by calling 812-638-4261 live during the call-in segment of the show. Thursday Night D-STAR Round Table. This is because most man-made noise is verti-cally polarized. VHF & UHF Antenna Is A Dual Band Vertical. However, the J-pole's highly visible profile may be objection-able to some neighbors. Both custom designed as smarter, stronger, and more elegant multi-band options covering every frequency from 1. Also, on Saturday, during the contest, I put up a trapped EFHW for 10/15/30. This shortened easy-to-build vertical, with no-radials, is made from surplus military camouflage poles. High gain tv antenna Get the delicious flavor of fried fish without all the unhealthy fat in this oven-fried fish entree. Laird Connectivity is The Antenna Authority, supplying the highest quality RF antennas engineered for superior performance combined with industry leading warranty and support. 1 But would all the metal in the TV dish compromise a 2 meter antenna?. net Vision Statement To build the largest and most complete Amateur Radio community site on the Internet. Abraham Lincoln on 2 Meters Here is a staggered horizontal slot antenna, that is a wearable novelty top-hat antenna with high visibility for hams helping at public events. It couldn't be just any antenna; I needed one. Read honest and unbiased product reviews from our users. Many hams have asked for optimized antennas for multiple band operation, so we challenged antenna designer, QST author, and an inhabitant of a neighborhood where towers and Yagis would not go down well, John Portune, W6NBC, to come up with a compact vertical dipole which would be ATU “friendly” delivering good-to-excellent VSWR matches on all bands 80m through 10m with popular autotuners, in particular, the new breed of outdoor rated units. John Portune, W6NBC, the antenna’s designer and author of the article, also reports higher efficiency (see Figure 3). OK, thanks Jim, have had a private e-mail as well, on a similar line, I understand now how the ladder line feeder and antenna are supposed to interact now, as you say the instructions are a bit misleading. Vhf Vs Uhf Antenna UHF DTV/NTSC ANTENNAS Homebrew Coaxial Dipole For VHF Or UHF - W6nbc. 3 inch screen. The presenter, W6NBC built a magnifier so we could see the screen. Berkeman has been offering excellent advice. The approach used here is to determine the degradation of S/N resulting from a low gain antenna system in the context of expected ambient noise as per ITU P. Slot antennas are used typically at frequencies between 300 MHz and 24 GHz. After hunting around a bunch I found these fiberglass windsock masts on Amazon for a pretty good deal. Some hints/tips on how to assemble nice COAX TRAPS ! Before we start to assemble our traps, here some general info as introduction : Coax traps are cheap, easy to assemble in a reproducible manner, very rugged, perfect for portable or permanent operation, on dipoles, inverted-V's etc. A "portal" that hams think of as the first place to go for information, to exchange ideas, and be part of what's happening with ham radio on the Internet. It certainly was low profile, but not exactly discrete, and made no sense to me. Rispetto a. 8:1, followed by the 40 m wires then the 80 m wires. This means that the antenna signals (in N1BYT's design, where the antenna load Z1 is an untuned inductance) encounter the non-linear active device without the benefit of filtering and thus AM blanketing or IMD are more likely to occur than in a receiver where the antenna signals are first filtered by the oscillator's tank. I went to a “license-in-one-day” session held by W6NBC to get that. Vhf Vs Uhf Antenna UHF DTV/NTSC ANTENNAS Homebrew Coaxial Dipole For VHF Or UHF - W6nbc. Our next meeting, August 28th, we will be discussing Emergency Preparedness. Umbrella Antenna Ideas. Thursday Night D-STAR Round Table. Could do 70cm band on one of those 18" dishes, or maybe 6m on a C-band dish! Of course the latter would defeat the advantage of stealth. In most cases, helical antennas are mounted over a ground plane. 000 MHz) will normally resonate up around 446 MHz or so and can be used on both bands. 4 And an entire vertical antenna system was described by David. There are three ways to tune the antenna: (1) shunt a little L or C across the feedpoint, a short hair pin or cap of circa 10 pf. The antenna rotator is probably similar to this one. I was playing with. Antennas worked as expected, but the local environment was extremely noisy most of the time which affected the wire dipole much more then it did the 20m portable dipole and because the wire dipole was my only option for 40m, I finally re-deployed it in vertical/sloped from the roof configuration, which helped with the noise issue somewhat:. By John Portune W6NBC. But which ones are worth the effort?. This antenna consist basically of multiple dipole antennas, sharing the same coaxial feed line. Keeping the Cost Down. The Wire Size can range from 16 AWG to 12 AWG. Portune, W6NBC. John Portune, W6NBC is here to talk about the challenges of having antennas in HOA restricted areas, and how antennas can blend in with the surroundings. Some are presented here: * Experiences of rain gutter antenna with SG230 antenna coupler (commercial link) * K5IJB rain gutter antenna * N3VEM rain gutter antenna * WB3GCK downspout antenna * WMOG's results with rain gutter antennas. PDF 1957 REAR ANTENNAS - Classic Chevy. 15dbi of gain. com Choosing a Location for the Antenna The key to the overall robustness of the radio link is the height of the antenna. You will be sent email requesting confirmation, to prevent others from gratuitously subscribing you. The all new Force 12 Flagpole Antenna line, designed by QST author John Portune, W6NBC, are selling extremely well and helping a lot of hams with HOA deed restrictions or who just want a 'low visual footprint' get on the air. http://w6nbc. An unobtrusive outside antenna is always difficult to design, but John E. Slot antennas are familiar in the commercial radio world, but not to hams. ниже предложена антенна американского радиолюбителя W6NBC опубликованная в журнале QST June 2011. Some users of the DX Flagpole antenna may be uncomfortable using hookup wire to. The winning article for the January 2019 QST Cover Plaque award is "The 2-Meter Slot-Cube Antenna" by John Portune, W6NBC. In this article we'll take that design two steps farther. VHF/UHF Quad Antenna - IW5EDI Simone - Ham-Radio VHF/UHF Quad Antenna The information in this article has come from many amateur sources, the most notable was from WA6TEY (sk 1985) Ray Frost, who was a pioneer of VHF Quad designs and one of the best Southern California Transmitter Hunters of the 1980’s. • 2 meter slot antennas need a minimum dish size of 28 inches • 440 mhzslot antennas need a minimum dish size of 16 inches • The slot antennas exhibit very good bandwidth i. This shortened easy-to-build vertical, with no-radials, is made from surplus military camouflage poles. Portune, W6NBC. Do so in exactly the same way you tuned the inter-cavity lines in the duplexer. com/file/d/1yfUi14hz45MA. Once you have finished with the physical installation of your Holley Dominator MPFI system, including the throttle body, ECU, wiring harnesses, required sensors, and fuel system components, you will probably take a deep breath (you've earned it) and ask yourself, "OK, how do I get this thing to run?". Content provided by HQ ARRL, 225 Main Street, Newington, CT, 06111. Umbrella Antenna Ideas. High Performance 40 Meters Vertical, W6NBC This shortened easy-to-build vertical, with no-radials, is made from surplus military: Indoor antennas for 40mt, EA5XQ A DCTL is an inverted delta-shaped hoop antenna constructed with a 300 ohm parallel TV cable that utilizes the capacity created by being a parallel cable: L'antenne W3HH - T2FD, ON5MJ. > Download Fustel de coulanges a cidade antigua pdf Read Online >> Read Online Fustel de coulanges a cidade antigua pdf Esta pesquisa busca compreender de que maneira a obra Cidade Antiga do historiador. High performance custom design, rugged engineering for strong, smart, and XYL approved elegance. 2m Projects - Loop Antennas. net Abstract A coaxial-cable trap dipole antenna installed in the attic provides a surprisingly effective solution to HF operation on the 10, 15, 20, 30, 40, and 80 meter amateur bands at a QTH with restrictive covenants that prohibit outside antennas. I wanted high efficiency 40 Meter antenna with low-angle radiation. By John Portune W6NBC. I've also mentioned on occasion that you can build a satellite 2m/440 yagi for about the same cost. The winning article for the January 2019 QST Cover Plaque award is “The 2-Meter Slot-Cube Antenna” by John Portune, W6NBC. 3 Ron Harger, WD8BCS, described multiple retractable tape measures used as ground radials for a temporary vertical antenna installation. List of articles in category Website; Title Author Hits; ARISS Establishes Itself as an Independent Organization : Written by Joe Lockhart - VE5JL : Hits: 0 : The Yasme Foundation. I ran across his testing well after I did some of my own (with twinlead, some old RS 300 ohm stuff, and a leftover chunk of 450 ohm window line). via Current ham radio news December 28, 2019 at 07:13AM via RSS Feed Current…. Home brew antenna mast Home brew antenna mast. We challenged antenna designer, QST author, and inhabitant of a neighborhood where towers and Yagis would not go down well, John Portune, W6NBC, to come up with a compact vertical dipole with its feedline hidden inside the lower tubing sections and which would be ATU "friendly" delivering good VSWR matches on all bands 80m through 10m with. com in a single category. John Portune, W6NBC is here to talk about the challenges of having antennas in HOA restricted areas, and how antennas can blend in with the surroundings. Introduction to high-performance, all band, OCF Vertical Dipole antenna systems and DX Flagpole Antennas by Greyline Performance, as presented by antenna designer John, W6NBC. you are not going to find a radio that cheap in the VHF commercial band. pdf: Constitution & Bylaws: Members contact information 06/07/2020 WRARC Standard Operating Procedures 07/29/13 Fillable Club Wear Order Form 10/15/17. Portune, W6NBC here made from a threaded table lamp tube, the lower part of the whip becomes the center conductor of a short length of rigid coax feeding the center of the antenna. If the loop is to be rotated, then use rigid spreaders, but use the top wires as guys to hold them up. Some are presented here: * Experiences of rain gutter antenna with SG230 antenna coupler (commercial link) * K5IJB rain gutter antenna * N3VEM rain gutter antenna * WB3GCK downspout antenna * WMOG's results with rain gutter antennas. Emergency Antenna by ZS5MGD This antenna was built after a surprise greeting upon arriving on site to repair a low power radio telemetry system "Why have you come?. I think the ARRL books are probably as good as you’ll get, unless you augment them with a class. , (2) Shorten or lengthen tubes. The main category is Antennas for 2 meters band that is about Antenna projects for 144 MHz. Cast a ballot for your favorite article in the February issue today. Some aircraft use slot antennas - you may want to try one of those just for kicks if you have some spare metal surfaces sitting around. The winning article for the December 2019 QST Cover Plaque award is "Slot Cube Antenna for 6 Meters" by John Portune, W6NBC. Thus they had to generate big watts to be heard on Tx. I seem to recall one suggested feed for a dish is a dipole or set of crossed dipoles. If that's your situation, this may be the antenna for you. Understanding the Cavity Duplexer w6nbc. pdf: 16M: 07-Jun-2012 21:50: Antenna Theory and Design_ 3rd Ed_ Warren L Stutzman_ Gary A Thiele_ 2013. 2 meter vertical antenna built with coat hangers by John Portune, W6NBC 2 meter vertical antenna built with coat hangers by John Portune, W6NBC An Ultra-Simple 2-Meter Antenna You’ll get J-pole performance from this base station vertical antenna built with coat hangers and PVC pipe. com I’ve long wondered if it would be practical to hide an efficient 2 meter base-station antenna in a TV satellite dish. Customer Reviews, Pics, Audio, & RBN Signal Data for the Stealth HOA vertical antenna and the DX Flagpole Antenna. Dummies guide to aircraft antennas Radio and VHF Transceiver all refer to the aircraft communications transceiver which operates across the VHF aircraft frequency band of 118. Be sure to tune in to hear his ideas and. 2m y otra de 19 el. Now connection to normal coax is easily made below the antenna. Kraus, W8JK (SK), Antennas, 第三版, McGraw-Hill Education. Arrow Antennas --K6LCS' Arrow Antenna Mods. My Loop Antenna November 20, 2013 9 Characteristics of Small Loop Antennas for HF Operation • Coupling loop ≈1/5 diameter of main loop for good impedance matching on all bands • Antenna is narrowband, operating at resonance of loop L and tuning C • Radiation resistance in series with loss res. The secret of stealth, whether for magic shows or ham radio antennas, is "hide it in plain view. - page 37 "Product Review". VHF & UHF Antenna Is A Dual Band Vertical. The DX Vertical is our non-stealth HF vertical antenna. Discussion in 'VHF/UHF - 50Mhz and Beyond' started by 146. Build a compact dipole antenna that covers 40, 20 and 10 meters. G3XDV 07/04 Antenna Stress - Summer. com Fan Dipole Antenna. Not a Member? Join Us. A 75 foot Top Loaded Vertical Antenna: РадиоХобби #4 за 2004 год: 31: ATU для согласования диполя 2х5 м с трансивером на всех диапазонахот 1,8 до 30 МГц: РадиоХобби #1 за 2001 год: 32: Bobtail-антенны для диапазонов 2 м и 70 см. Portune’s magic windowed ladder line In Aug 2018 QST John Portune (W6NBC) described an improvement he made to ordinary windowed ladder line. Barker & Williamson's BWDS series of broadband folded dipole antennas, together with our MK114 or MK112 mast systems, gives rear tactical and base units the full HF communications capability they need. The traditional T-Piece phasing is critical, and will detune the notch cavities. W6NBC, for the basic design, Howard built a tilt-up compact HF loop, mostly of 3/4 inch copper pipe -- with some PVC pipe and fittings. Used with Yaesu FT-60 dual band HT. pdf: 33M: 22-Jan-2015 16:43: Antenna Theory and Design_ W L Stutzman_ G A Thiele_ 1981. He does it with hand tools and ordinary hard-ware store items, such as lamp tubing nuts, copper pipe and pipe caps. Chapter Outline (click on a title to go to that chapter): The Mysterious Duplexer. If that's your situation, this may be the antenna for you. The all new Force 12 Flagpole Antenna line, designed by QST author John Portune, W6NBC, are selling extremely well and helping a lot of hams with HOA deed restrictions or who just want a 'low visual footprint' get on the air. Here is a rough cut:. I call it a ‘Inverted Ham Radio Class” because the test comes at the beginning instead of the end. Richard Lau) at Nibong Tebal, South of Seberang Perai, Penang. It's actually two antennas in one, unlike a. John can be reached at W6NBC. As supplied, the vertical antenna is designed to operate on 60 meters. Compromise disguise antennas are no strangers to hams, especially on HF. It was known for its strong emphasis on technical articles and for the lengthy editorials in each issue by its founder and publisher, Wayne. Home-brew 2M aluminum cavity Example for the entire book The best way to learn Cavities. 2m/70cm Portable Tape Measure Beam by W6NBC The antenna is being constructed by using 15 x 15 mm aluminium boom and I have used for the elements tubular aluminium rods of 8 mm diameter. 4000, october 1996. John Portune, W6NBC, the antenna’s designer and author of the article, also reports higher efficiency (see Figure 3). Publicerad 04 mars 2016 Skriv ut I mars numret av QST har W6NBC en artikel ‘ An. This should be a good presentation--we'll take care of business at the end. I still want to open the rear hatch, his HF antenna mount makes it impossible to open the lower half. How to Build a 9:1 UnUn for Ham Radio Antenna Simple and inexpensive to build the 9:1 end fed long wire antenna is a good antenna for both portable and home use. By John Portune W6NBC. 2017/08/29 - Photo : Direction finding loop antenna for 2 meter band, similar to one described in "A Uniquely Tuned 2 Meter Transmitter Hunting Loop" by John Portune, W6NBC, QST, January 2013, pp. pdf We will also have an NVIS setup for EmComm practice with the local nets along with working stations in the Ohio valley and the EOC in Columbus. " To the neighbors, ham antennas are "eyesores. You’ll see some of both in this how to video. See more ideas about Antennas, Antenna, Ham radio antenna. I made a drawing for this antenna, and i believe that is a reliable guidance to any fellow ham decides to construct this antenna. 64m, and a total length of 1m. Arrow Antennas - pictured, left--K6LCS' Arrow Antenna Mods. An open antenna circuit is just as bad as a shorted one, and improper connector installation can cause both scenarios. What about swapping the phase of one of the loops? > > How about the RxTx Vari-Notch, a parallel L and C between two connectors?. No Radials, free standing. My homeowners covenants, conditions, and restrictions (CC&R) committee couldn't force me take it down. This antenna consistently beat the 80m doublet into Europe on 40m, so it got a good bit of use. My inverted-V at 40 ft. Compute! Issue 148 - January 1993. The attached instruction sheet is courtesy of WA5VJB who designed these antennas. perspectiva do historiador Fustel de Coulanges na sua obra A Cidade Antiga. I've also mentioned on occasion that you can build a satellite 2m/440 yagi for about the same cost. This horizontal "slot" antenna, cut into the reflector of a TV dish, is both the master of disguise and high in performance. Famous ham radio vendors have sold it in years past. I also tried to duplicate Uk's Antenna Technical Author, Peter Dodd's, G3LDO DDRR mobile setup at 14 MHz, but had to make mine over a traditional horizontal 16 radial ground plane instead of. Any sharp points end of the inductor. A couple of note are the VE2ZAZ model, the AMSAT "Cheap and Easy Yagi" pairing, and the W6NBC tapemeasure Yagi dual-band. Or are they? Don't be so sure. By John Portune W6NBC. It is a 1/4 wave on 2 meters and 1/2 wave on 70 cm. Si cette antenne originale est très intéressante, le concepteur s’est fourvoyé dans l’explication de son fonctionnement, d’où la publication de. Portune, W6NBC here made from a threaded table lamp tube, the lower part of the whip becomes the cen -Dual Band Antenna 40/80m Juni 16, 2013 · by yc1rhs · in Antena. You’ll get J-pole performance from this base station vertical antenna built with coat hangers and PVC pipe. By John Portune W6NBC : Chapter 3 - Cavities. com The winning article for the January 2019 QST Cover Plaque award is “The 2-Meter Slot-Cube Antenna” by John Portune, W6NBC. N3GWZ Ham Radio 7,839 views. -Is it finally time to finally upgrade to computer logging? we do to fix that. Welcome to the "ARRL News-Features" update from Big Island ARRL News. Cast a ballot for your favorite article in the February issue today. 1 But would all the metal in the TV dish compromise a 2 meter antenna?. 26" W Allstar Monitor II, Node 48439 - W6AB HUB SARC HUB Site-1 VAFB. In general, Ethernet radio units with a higher antenna placement will have a better communication. Once you have finished with the physical installation of your Holley Dominator MPFI system, including the throttle body, ECU, wiring harnesses, required sensors, and fuel system components, you will probably take a deep breath (you've earned it) and ask yourself, "OK, how do I get this thing to run?". Antenna: All band flagpole disguise antenna (see picture right). Cheap "mast"-solution I've been setting up in parks with my car and was looking for a way to get my 10 meter end-fed dipole and 2-meter roll-up j-pole up in the air. Richard Arnold, AF8X57-58 DOCTOR: Coax calculator: Times Microwave 45 DOCTOR: What is the relationship between S-meter & dBm signal voltage? 46 HANDS-ON: Experiment #83 - Circuit. A vertical seemed the obvious answer, a naturally low-angle radiator. walkingstick. PDF 60 Meter Vertical Antenna - DX Engineering - 2 - Introduction The DX Engineering DXE-60VE-1P is a fast taper 43 feet high vertical antenna system. On a typical two-way hilltop, cavity duplexers are as common as the forest of antennas that bristle from the towers. 73 Magazine December 1997 (#447) Distributed Capacity Folded Loop - This ceiling-mount antenna will really go to your head! W6NBC 10 How to Silverplate RF Tank Circuits - A simple and inexpensive process to reduce losses. VHF and UHF Antenna Systems 18-21 Fig23—These drawings illustrate the dimensions for the 144-MHz ground-plane antenna. The winning article for the December 2019 Q ST Cover Plaque award is "Slot Cube Antenna for 6 Meters" by John Portune, W6NBC. See more ideas about Antennas, Antenna, Ham radio antenna. Popular with disaster preppers, emcomm, ALE, MARS, ARES, RACES, and Real DX 160-6M. It has been done with power at or even below 10 watts, but most people recommend using 500 watts to the full limit of 1500 watts. Back to Antenna Index page Back to Home. The mount here is 4runner specific and can be found on amazon for decent price. John Portune, W6NBC is here to talk about the challenges of having antennas in HOA restricted areas, and how antennas can blend in with the surroundings. We invite you to read, add to, and amend our show notes at wiki. 2013-1QSTwalkingstick - Free download as PDF File (. But if you decide to connect the outboard cavity directly to your duplexer, then you do need to tune the line. - page 37 "Product Review". By John Portune W6NBC. Now I really need to get crackin’ on that backyard satellite antenna–maybe W4RNL‘s turnstile antenna (from the Aug 2000 QST), or W6NBC‘s quadrifilar helix antenna (from the Oct 2009 QST). Join us on reflector XRF002A, XRF310A and XRF555A 7:00pm PDT weekly. 3 Ron Harger, WD8BCS, described multiple retractable tape measures used as ground radials for a temporary vertical antenna installation. 2017/08/29 - Photo : Direction finding loop antenna for 2 meter band, similar to one described in "A Uniquely Tuned 2 Meter Transmitter Hunting Loop" by John Portune, W6NBC, QST, January 2013, pp. performs well, but is “a cloud burner,” good for local contacts within 500 miles. Neil interviews John, W6NBC, Retired NBC Broadcast Engineer, QST writer, and Antenna Award Recipient about Stealth antennas including the DX Flagpole Antenna. Following in the footsteps of the ever-popular homebrew copper pipe. Cavity Duplexers Chapter 7 by W6NBC. JLRG - Amateur Radio News ARRL NEWS Amateur Radio Newsline Report 2225 for Friday June 19 2020 Amateur Radio Newsline Report Number 2225 with a release date of Friday June 19 2020 to follow in 5-4-3-2-1. The DX Vertical is our non-stealth HF vertical antenna. They're well known to repeater owners and builders. net Vision Statement To build the largest and most complete Amateur Radio community site on the Internet. Introduction to high-performance, all band, OCF Vertical Dipole antenna systems and DX Flagpole Antennas by Greyline Performance, as presented by antenna designer John, W6NBC. Greyline DX Feed line Kit: Ladder-line to Coax PL-259 Adapter. Antenna Theory & Design_ Markus Voelter_ Michael Kircher_ Uwe Zdun_ 2003. The all new Force 12 Flagpole Antenna line, designed by QST author John Portune, W6NBC, are selling extremely well and helping a lot of hams with HOA deed restrictions or who just want a 'low visual footprint' get on the air. The winning article for the December 2019 QST Cover Plaque award is "Slot Cube Antenna for 6 Meters" by John Portune, W6NBC. I also saw a design using copper tubing on smaller coax with the shield tied to the tubing. Here is a rough cut:. 3K-FA, QRP transceiver X1M, Antenna Cuschcraft R 9, FlexRadio, Dálkově ovládaný anténní přepínač RemoteRIG 1269 NH8S - vyše 105 000 spojení z ostrova Swains W8GEX Recenze transceiveru Elekraft KX3. Content provided by HQ ARRL, 225 Main Street, Newington, CT, 06111. High Performance 40 Meters Vertical. You can Tune the bands today and hear folks happily (and with a great signal, we're hearing!) working DX with the DX Flagpole and DXV (DX Vertical) line of antennas. Cellphones Telecommunications‎ > ‎. But are you really prepared for operat-ing this winter?. An unobtrusive outside antenna is always difficult to design, but John E. com ARRL会员John Portune, W6NBC, 在1960年获得俄勒冈州立大学的物理理学士学位,于1961年获得他的FCC商业一般无线电话许可证,于1965年获得业余无线电. The polarization of the slot antenna is linear. Our next meeting, August 28th, we will be discussing Emergency Preparedness. Easy to setup and take down. John Portune, W6NBC is here to talk about the challenges of having antennas in HOA restricted areas, and how antennas can blend in with the surroundings. Built from article: "A Uniquely Tuned 2-Meter Transmitter Hunting Loop" by W6NBC in the January 2013 QST issue: https://drive. We broke down and purchased a new portable rig this week a while back a came across an FT757GXII on ebay, and thought it would be nice to have a second station in the MH away from the driver seat,. This is more work but the best. (No you can't use the dish for both. The result could not have come out better and exceeded my expectations. Home-brewing a satellite antenna is a terrific beginner's project, and several designs are found at online locations. By John Portune W6NBC : This chapter is a side issue, but one of considerable importance. 2 meter vertical antenna built with coat hangers by John Portune, W6NBC 2 meter vertical antenna built with coat hangers by John Portune, W6NBC An Ultra-Simple 2-Meter Antenna You’ll get J-pole performance from this base station vertical antenna built with coat hangers and PVC pipe. But has been also the week of the EP6T Iran DX pedition, the Lindenblad satellite antenna, and the Alpha 8410. As supplied, the vertical antenna is designed to operate on 60 meters. Be sure to tune in to hear his ideas and call with your questions! Be sure to CALL in with your questions and comments by calling 812-638-4261 live during the call-in segment of the show. Umbrella Antenna Ideas. Famous ham radio vendors have sold it in years past. Arrow Antennas - pictured, left--K6LCS' Arrow Antenna Mods. Demonstrations of new amateur radio gear will be presented, and attendees can speak with exhibitors via video/audio or chat, as well as interact with. I’ve done it both […]. 8:1, followed by the 40 m wires then the 80 m wires. com in a single category. The coax from the antenna probably goes to the amplifier, it's outputs going to cable jacks around the house. John Portune, W6NBC In the January 2019 issue of QST, I introduced the slot-cube, a remark- ably small 2-meter base station antenna, with similar gain to aJ-pole, and, like the popular homebrew ver- sion, soldered together from 1⁄ 2-inch copper water pipe. Satellite Amateur Radio Club W6AB, Serving the Central California Coast Meet Other HAMs | Informative Presentations | Answers to Ham Radio Questions PUBLIC MEETINGS: Typically, first Saturday every month, 1PM |DIRECTIONS| Clubhouse: 34° 48' 50. This vertically polarized horizontal slot antenna, cut into the reflector of a TV dish, might be the ultimate stealth antenna. Openspot wimo. Getting Started with Amateur Satellites - K6LCS Shows You. It can handle up to 10 watts. The Classic Rain-Gutter Loop Antenna – Is it any Good? A simple technical look at an HF horizontal loop of. A Disguised Flagpole Antenna By Albert Parker, N4AQ 1717 Lilly Lane Lady Lake, FL 32159 moved to a retirement community in October 1991—a community which has restrictions against erecting any sort of antenna. By John Portune W6NBC. We challenged antenna designer, QST author, and inhabitant of a neighborhood where towers and Yagis would not go down well, John Portune, W6NBC, to come up with a compact vertical dipole with its feedline hidden inside the lower tubing sections and which would be ATU "friendly" delivering good VSWR matches on all bands 80m through 10m with. The polarization of the slot antenna is linear. 8:1, followed by the 40 m wires then the 80 m wires. The winning article for the January 2019 QST Cover Plaque award is "The 2-Meter Slot-Cube Antenna" by John Portune, W6NBC. Be sure to tune in to hear his ideas and call with your questions! Be sure to CALL in with your questions and comments by calling 812-638-4261 live during the call-in segment of the show. W6NBC 10 How to Silverplate RF Tank Circuits - A simple and inexpensive process. (by W6NBC). So we see that both effects do not entirely cancel, but still partially, as was observed by W6NBC experimentally. Using a HDTV (High-Definition Television) antenna, based on the DB4 design, is 1 of the most effective ways to retrieve HDTV signals. The Magazine Rack is a collection of digitized magazines and monthly publications. Welcome to the W6AB Satellite Amateur Radio Club remote Kenwood TS-2000. Alex Diaz ’ Homebrew Yagis. Noisier than horizontal antennas Easier to hide in antenna restricted areas (can be. Also, his five diagrams and photos cover the ways in which you can enhance your effectiveness with some personal modifications. • 2 meter slot antennas need a minimum dish size of 28 inches • 440 mhzslot antennas need a minimum dish size of 16 inches • The slot antennas exhibit very good bandwidth i. QSO Today Episode 9, John Portune, W6NBC - Slot Antenna Efficient 2 Meter Disguise Antenna from Satellite TV Dish, By John Portune, W6NBC Vancouver, Washington Movie: Contact, with Jodie Foster SETI Screensaver Tesla Home Battery Pack Washington State Solar Energy Credits DVDongle DVAP - DV Access Point Dongle Harley Davidson motorcycles. 1 1/2 pounds thick whitefish. It has gain and wave angle comparable to a full-sized ¼λ ground plane antenna with radials. Portune, W6NBC, has come up with an antenna that gives good performance and has a slim profile. You can reach. It works well for an area with antenna restrictions but is what I would call a compromised antenna. Antenna: All band flagpole disguise antenna. My inverted-V at 40 ft. This novelty eye-catching taste of. Accessed on 18 December 2019, 0435 UTC, Post 1241. This article. The DXZone best new links of the last week, reviewed on The DXZone. Forced to chooses just one and I will be grabbing the Yaesu, it''s solid and dependable, and slightly more output than the Baofeng. Be sure to tune in to hear his ideas and call with your questions! Be sure to CALL in with your questions and comments by calling 812-638-4261 liv. Bis zu 9 Seiten mit Punkten. If the antenna is off-resonance, it will be either - or +j, that is to say, above or below resonance. Military Hf Antenna. The QST Cover Plaque Award -- given to the author or authors of the most popular article in each issue -- is determined by a vote of ARRL members on the QST Cover Plaque Poll web page. By John Portune W6NBC. OK, thanks Jim, have had a private e-mail as well, on a similar line, I understand now how the ladder line feeder and antenna are supposed to interact now, as you say the instructions are a bit misleading. Helical antennas can operate in one of two principal modes: normal (broadside) mode or axial (or end-fire) mode. The article presents a model of such an antenna at 3. The QST Cover Plaque Award — given to the author or authors of the most popular article in each issue — is determined by a vote of ARRL members on the QST Cover Plaque Poll web page. Using only two vertical antennas sited on the beach they worked 22,826 contacts in the log on bands from 10 meters through 160. You will also get the K4OCE Minirig document. You can find the shout box show notes on D-STAR Round Table Board Shoutbox History N0RSR: DMR registration update. I ran across his testing well after I did some of my own (with twinlead, some old RS 300 ohm stuff, and a leftover chunk of 450 ohm window line). Built from article: "A Uniquely Tuned 2-Meter Transmitter Hunting Loop" by W6NBC in the January 2013 QST issue: https://drive. Rispetto a. The DXZone best new links of the last week, reviewed on The DXZone. the 2 meterantennais10mhzwideat2:1SWRpointsmeter antenna is 10mhz wide at 2:1 SWR points. com in a single category. This worked fantastically well for a couple of months, then a solder joint broke between the antenna connector and the radiator element. com/articles/2019-12QST6mslotcube. Episode 009 - John Portune - W6NBC John Portune, W6NBC, has a life dedicated to education from his early days at a British grammer school teacher to his current one day, all day, ham radio classes where hundreds of people have gotten their first licenses. However, the J-pole's highly visible profile may be objection-able to some neighbors. pdf: 33M: 22-Jan-2015 16:43: Antenna Theory and Design_ W L Stutzman_ G A Thiele_ 1981. What marketing strategies does Pixidee use? Get traffic statistics, SEO keyword opportunities, audience insights, and competitive analytics for Pixidee. pdf: The Art & Skill of Radio Telegraphy - 3rd edition. This shortened easy-to-build vertical, with no-radials, is made from surplus military camouflage poles. The polarization of the slot antenna is linear. Portune, W6NBC, has come up with an antenna that gives good performance and has a slim profile. I ended up with an SWR of 1:1. When it comes to the family car, sometimes you need to be a bit discreet when installing your mobile rig, at least in the name of. There are 4 categories to win. AARC OVER Keeping Austin Wireless for Over 96 Years! Bulletin of Austin Amateur Radio Clubs Welcome to 2017! Are you ready for winter? The Winter solstice occurred at 10:28 AM on December 21st, 2016. k7exj: Sorry to see the roundtable net close. DIY 2m/70cm Directional Antenna. Made from thick-wall aluminum and under 25 inches in height, this antenna will withstand mountaintop winds for years. Back to Antenna Index page Back to Home. 40 METER CAGE DIPOLE at W4NFR A few summers back I put up a Half Wave Cage Dipole 40 Meter Antenna. I'm looking into getting an Amateur radio license, but I'm worried about it as I have been threatened by an ebay seller who happens to be a Ham radio user, when I purchased a new antenna for my Motorola GP640 hand-held radio that I'm authorized to use for work and a 70cm band radio to (Listen to only) for studying purposes for when I do my exam. Cut for 2 meters, it could easily be lengthened just a little for vhf airband:. here made from a threaded table lamp tube, the lower part of the whip becomes the center conductor of a short length of rigid coax feeding the center of the antenna. The QST Cover. N3GWZ Ham Radio 7,839 views. pub (09/151) Application: The A 13 is a broad band antenna for a very large frequency range in the VHF and UHF bands. Yes, it is true that filters made from discrete coils and capacitors also can handle power, such as in an antenna tuner. High Performance 40 Meters Vertical, W6NBC This shortened easy-to-build vertical, with no-radials, is made from surplus military: Indoor antennas for 40mt, EA5XQ A DCTL is an inverted delta-shaped hoop antenna constructed with a 300 ohm parallel TV cable that utilizes the capacity created by being a parallel cable: L'antenne W3HH - T2FD, ON5MJ. John Portune, W6NBC has a very interesting video out showing much more detail than … Continue reading →. (No you can't use the dish for both. Helical antennas can operate in one of two principal modes: normal (broadside) mode or axial (or end-fire) mode. 2 meter vertical antenna built with coat hangers An Ultra-Simple 2-Meter Antenna. From Middle High German würfel, from Old High German wurfil, from Proto-Germanic *wurpilaz (a. Also, any noise pickup from the coax shield will feed down to your receiver. Are you having fun on the bands too? "4-band DXCC this summer with my DX Flagp. I used camo-poles for two reasons. pdf We will also have an NVIS setup for EmComm practice with the local nets along with working stations in the Ohio valley and the EOC in Columbus. Ed Fong (WB6IQN) on eBay. com/articles/2019-12QST6mslotcube. [email protected] You can reach. It was known for its strong emphasis on technical articles and for the lengthy editorials in each issue by its founder and publisher, Wayne. Using only two vertical antennas sited on the beach they worked 22,826 contacts in the log on bands from 10 meters through 160. Get the white paper on this antenna Favorite mode: SSB ragchewing Clubs: Goldcoast Net W6AB - Satellite Amateur Radio Club - this is the club that John spoke about that has the Internet remote base station, using the Kenwood TS-2000 on the property of Vandenberg Air Force Base. A vertical antenna seemed the obvious solution because verticals are low-angle radiators. A vertical seemed the obvious answer, a naturally low-angle radiator. DBJ-1 - was developed …Build the Slim JIM Antenna A Unique VHF Antenna with gain over a J-Pole Jose I. Our next meeting, August 28th, we will be discussing Emergency Preparedness. I recently made the 2m Slot Cube antenna as described by John Portune W6NBC as a potential HOA unfriendly solution. Second Prize: Jacek Pawlowski, SP3L, "Cat's Whiskers -- A BroadbandMulti-Loop Antenna" Third Prize: Herb Allred, N4HA, "A 20-Meter Two-Element Wire 'IV' Beam" 6 Meters and Higher Frequencies. So it is the combination of all the three. by John Portune W6NBC. High Performance 40 Meters Vertical, W6NBC This shortened easy-to-build vertical, with no-radials, is made from surplus military: Indoor antennas for 40mt, EA5XQ A DCTL is an inverted delta-shaped hoop antenna constructed with a 300 ohm parallel TV cable that utilizes the capacity created by being a parallel cable: L’antenne W3HH - T2FD, ON5MJ. This antenna has a 9 to 1 un/un and requires 30 ft of coax feedline. How to Build & Adjust a Base Tune with Holley EFI By Tony Candela May 19, 2017 Once you have finished with the physical installation of your Holley Dominator MPFI system , including the throttle body, ECU, wiring harnesses, required sensors, and fuel system components, you will probably take a deep breath (you’ve earned it) and ask yourself. The HOA can't say jack squat about satellite TV antennas, and you can easily make a slot antenna for 2m by cutting a, well, a slot into a dish. php on line 143. Скачать Midi-файлы песен - PIANOCOVERS. To lower the frequency only, you can add short stubs at the corners across from the feedpoint corner. 739 - Thread: 1 -> Environment. John Portune, W6NBC In the January 2019 issue of QST, I introduced the slot-cube, a remark- ably small 2-meter base station antenna, with similar gain to aJ-pole, and, like the popular homebrew ver- sion, soldered together from 1⁄ 2-inch copper water pipe. The remote expedition runs from Oct 20th – Nov 3 201. Symmetryrestaurants Near Me. There's more to it than what is in your manual or on most how to do it websites! What more is required other than an SWR meter and properly setting the network components for matching the feed line to the antenna tuner?. By John Portune W6NBC. some novel loop disguise techniques. Below is a PDF by “W6NBC John Portune”. You’ll get J-pole performance from this base station vertical antenna built with coat hangers and PVC pipe. I went to a “license-in-one-day” session held by W6NBC to get that. A helical antenna is an antenna consisting of a conducting wire wound in the form of a helix. Read more →Previous pageNext page. com vertical antenna projects for the 40 meters band category is a curation of 41 web resources on , The Hudson antenna, Vertical antenna for 40 and 80m, Slink-ette antenna. Amateur Satellite FAQ & How-To Welcome This wiki was started to document Frequently Asked Questions across various forums (amsat-bb mailing list, AMSAT-NA Facebook group, #amsat on Twitter, QRZ satellite forum). Best 40 meter dx antenna. The G5RV antenna is a popular form of antenna for HF amateur radio communication where it provides multiband operation and without being excessively large. Similarly, John Portune, W6NBC, used steel tape for the elements in a pair of 2 meter and 70 centimeter Yagi anten-nas. Loading Unsubscribe from Paul Bailey? How I use my drone to deploy wire ham radio antennas - Duration: 7:15. The HOA can't say jack squat about satellite TV antennas, and you can easily make a slot antenna for 2m by cutting a, well, a slot into a dish. John Portune, W6NBC will be on HTL! Thursday (10/31) at 9 pm Eastern to talk about the challenges of having antennas in HOA restricted areas, and how antennas can blend in with the surroundings. From the above current diagram (where blue represents lower current flow and red represents higher current flow) it is clear that there is little current flowing in the horizontal section of the antenna connecting the two loop ends. It was said, this antenna could hear crickets 1000's of miles away, when the rig was over sea water. You need to login to view this content. 70cm Antenna. Si cette antenne originale est très intéressante, le concepteur s’est fourvoyé dans l’explication de son fonctionnement, d’où la publication de. http://w6nbc. The QST Cover Plaque Award — given to the author or authors of the most popular article in each issue — is determined by a vote of ARRL members on the QST Cover Plaque Poll web page. Be sure to tune in to hear his ideas and call with your questions! Be sure to CALL in with your questions and comments by calling 812-638-4261 live during the call-in segment of the show. Вертикальная антенна SQ-Vertical (Super Quick Vertical) конструкции DK9SQ может работать на всех диапазонах от 80 до 10 метров. I also tried to duplicate Uk's Antenna Technical Author, Peter Dodd's, G3LDO DDRR mobile setup at 14 MHz, but had to make mine over a traditional horizontal 16 radial ground plane instead of. Views expressed in this amateur/ham radio news summary are those of the reporters and correspondents. ; power divides between R rad and R loss. John Portune, W6NBC any hams have made 2 meter Lape hunting. PA3FWM's Technical Notes for July 2012 Pieter-Tjerk de Boer, PA3FWM [email protected] Also, if this is for a "digital" type of signal like dstar, DMR etc, the group delay distortion caused by notches degrades the decodability. Built from article: "A Uniquely Tuned 2-Meter Transmitter Hunting Loop" by W6NBC in the January 2013 QST issue: https://drive. The antenna rotator is probably similar to this one. It works well for an area with antenna restrictions but is what I would call a compromised antenna. Portable Loop Antenna. 2016-04-26 01:48:59. Without Radials. Or are they? Don’t be so sure. By John Portune W6NBC : Chapter 1 that our sample receiver can hear a tiny 0. 40 meter loop antenna design keyword after analyzing the system lists the list of keywords related and the list of websites with related content, in addition you can see which keywords most interested customers on the this website. The cavity duplexer is a very familiar part of both amateur and commercial two-way radio. wire strung around your house at rain-gutter height, plus. John Portune w6nbc The Slot Antenna -- Undiscovered Country for Most Hams Keith Kaiser WA0TJT Net Control Manager Michael Walker - FlexRadio VA3MW FlexRadio - An Introduction to Remote HF Operating. John Portune, W6NBC; Topics. DIAMOND MOBILE ANTENNA MODEL M77 144 / 430 MHZ FCC Ham License Testing possible by W6NBC All Classes, inquire at ticket booth or John W6NBC SwapFest Other. Since 1960, Harger has been providing solutions to the lightning protection and grounding industries. Be sure to tune in to hear his ideas and call with your questions! Be sure to CALL in with your questions and comments by calling 812-638-4261 live during the call-in segment of the show. > John W6NBC does not mention in two port cavities, capacitive coupling at the hot end. Compromise disguise antennas are no strangers to hams, especially on HF. How to Build a 9:1 UnUn for Ham Radio Antenna Simple and inexpensive to build the 9:1 end fed long wire antenna is a good antenna for both portable and home use. Current ham radio news Southgate ARC - Members of the Roanoke Valley Amateur Radio Club will be participating in the National Amateur Radio Winter Field Day Exercise, January 25 and 26, 2020. com/Work-Sat/Antennas_files/W6NBC-Beam. Welcome to the W6AB Satellite Amateur Radio Club remote Kenwood TS-2000. We mainly sell directly to the consumer at this time. What Is a Common-Mode Choke? First, what is a choke? By a choke I mean a radio frequency (RF) choke — a discrete device that you can insert or connect in series with a wire or a cable to reduce substan-. putting up your first antenna, here is some tried and true advice. Ham Radio is fun again!. This has been the week of the Double Bazooka Antenna, with two very nice articles by CE4WJK Gustavo and EA5WP Jose that dedicates a page to this coaxial cable antenna design with dimensions and homebrewing tips. Welcome to the "ARRL News-Features" update from Big Island ARRL News. He recently moved to an apartment building, losing the large back yard antenna at his previous residence. By John Portune W6NBC. 4 And an entire vertical antenna system was described by David. You can also specify more attributes combinations with the Advanced Search and search within services like Amateur using service-specific criteria. Playing around with antenna designs: Slot Antennas I had never heard of a slot antenna until this month's copy of QST showed up with a picture of a 'low-profile mobile 2m slot antenna'. It was known for its strong emphasis on technical articles and for the lengthy editorials in each issue by its founder and publisher, Wayne. Mount the body somewhere that has ample air flow. A simple technical look at an HF horizontal loop of wire strung around your house at rain-gutter height, plus. They’re common in TV broadcasting, the skin of aircraft and in radar, microwave and cell phone applications. Some of these are, an SDR platform, internal battery, GPS, Bluetooth and D-STAR, all in a compact and lightweight body. ANT-1 Feeds 6-40m R6000 Vert. Ethernet Radio Antenna Installation Guide 1-866-294-5847 Rev 7. I pondered some ideas that I had found online from John, W6NBC that had home brewed a coaxial 1/4 wave FM antenna using a metal tube from an old floor lamp with the coax passing through the middle with the shield soldered to the tube. VHF UHF Coaxial Dipole Antenna W6NBC A base station antenna you can easily build for 146,220 or 440 MHz, with performance similar to a J-pole but smaller and less obstrusive. It is a 1/4 wave on 2 meters and 1/2 wave on 70 cm. But does the duplexer have to provide all these150 dB of isolation? Actually it doesn't, and this is an important repeater concept. The details have been posted! Also, Turkey Trot is approaching fast, and you should sign up to help. Thus they had to generate big watts to be heard on Tx. Below is a PDF by “W6NBC John Portune”. Playing around with antenna designs: Slot Antennas I had never heard of a slot antenna until this month's copy of QST showed up with a picture of a 'low-profile mobile 2m slot antenna'. We challenged antenna designer, QST author, and inhabitant of a neighborhood where towers and Yagis would not go down well, John Portune, W6NBC, to come up with a compact vertical dipole with its feedline hidden inside the lower tubing sections and which would be ATU “friendly” delivering good VSWR matches on all bands 80m through 10m with. Umbrella Antenna Ideas. Any sharp points end of the inductor. Compromise disguise antennas are no strangers to hams, especially on HF. Arrow Antennas --K6LCS' Arrow Antenna Mods. 3K-FA, QRP transceiver X1M, Antenna Cuschcraft R 9, FlexRadio, Dálkově ovládaný anténní přepínač RemoteRIG 1269 NH8S - vyše 105 000 spojení z ostrova Swains W8GEX Recenze transceiveru Elekraft KX3. DBJ-1 - was developed …Build the Slim JIM Antenna A Unique VHF Antenna with gain over a J-Pole Jose I. Reconciliation of Duffy CCS model with N7WS ladder line measurements In developing and implementing A model of current distribution in copper clad steel conductors at RF reconciliation against some other published data was important. John Portune, W6NBC is here to talk about the challenges of having antennas in HOA restricted areas, and how antennas can blend in with the surroundings. I have the IC-7300, SDRplay RSP1A , Mini Winkey USB, and an antenna designed by W6NBC that I built from a Harbor Freight flagpole. Without Radials. A beam type of antenna at a height of 70 feet or more will provide greatly superior performance over the same antenna at 35 feet, all other factors being equal. performs well, but is “a cloud burner,” good for local contacts within 500 miles. 2 * Sidelobes -16 * F/B ratio 25 * Stacking distance 522mm * VSWR 1. The DX Vertical is our non-stealth HF vertical antenna. John Portune, W6NBC any hams have made 2 meter Lape hunting. A helical antenna is an antenna consisting of a conducting wire wound in the form of a helix. So the second radio stayed on 20 meters all day. Publicerad 04 mars 2016 Skriv ut I mars numret av QST har W6NBC en artikel ‘ An. All photos by John Portune, W6NBC. Don't forget March 21, 2020 we have the MVARA Lou Malice WA8PKN 2 Meter contest coming up. Search Google for the W1GHZ antenna book for details. By John Portune W6NBC. The G5RV antenna is a popular form of antenna for HF amateur radio communication where it provides multiband operation and without being excessively large. The following is a guide on how to make a HDTV antenna. M0MTV HF Flagpole antenna Paul Bailey. Heres a link to it in a PDF format W6NBC 2m/70cm Beam. Ham Radio is fun again!. I wanted high efficiency 40 Meter antenna with low-angle radiation. I call it a ‘Inverted Ham Radio Class” because the test comes at the beginning instead of the end. The all new Force 12 Flagpole Antenna line, designed by QST author John Portune, W6NBC, are selling extremely well and helping a lot of hams with HOA deed restrictions or who just want a 'low visual footprint' get on the air. It's a little pricey but can do CB + 2m/70cm with dual antenna inputs. Be sure to tune in to hear his ideas and call with your questions! Be sure to CALL in with your questions and comments by calling 812-638-4261 live during the call-in segment of the show. I strongly urge you to spend a bit more money to purchase a practically-sized VNA with a 4. with the gain of a J-pole that your neighbors will never notice. Our antennas have many custom pieces that must be machined offering our clients smarter, stronger, and more elegant solutions for their radio. Presenters will include Ward Silver, N0AX, on grounding and bonding; Glenn Johnson, W0GJ, on DXpeditions, and John Portune, W6NBC, on building slot antennas for antenna-restricted locations. ANT-1 Feeds 6-40m R6000 Vert. Keeping the Cost Down. Content provided by HQ ARRL, 225 Main Street, Newington, CT, 06111. Since 1960, Harger has been providing solutions to the lightning protection and grounding industries. It's a little pricey but can do CB + 2m/70cm with dual antenna inputs. It can handle up to 10 watts. Elk 's Log Periodics. Aug 18, 2016 - Force 12 FPA-20F-OCF Flagpole Antenna | 80m - 10m | Off Center Fed Vertical Dipole | Only 20 Feet Tall! | No Radials!. Crosby, W1EJM • “A Compact, Removable 20-Meter Loaded Vertical Dipole” by Stephen Appleyard,. En janvier 2020 Antoine, F1AYO, a présenté la traduction d’un article de QST écrit par John Portune, W6NBC, au sujet de la réalisation d’une antenne 145 MHz compacte, de forme cubique. The article presents a model of such an antenna at 3. Some users of the DX Flagpole antenna may be uncomfortable using hookup wire to. Portune's magic windowed ladder line In Aug 2018 QST John Portune (W6NBC) described an improvement he made to ordinary windowed ladder line. 5 Best DIY Fan Dipole Antenna Projects - The DXZone. Slot antennas are used typically at frequencies between 300 MHz and 24 GHz. Dummies guide to aircraft antennas Radio and VHF Transceiver all refer to the aircraft communications transceiver which operates across the VHF aircraft frequency band of 118. com/articles/2019-12QST6mslotcube. The DX Flagpole Antenna is an HOA + XYL approved, No Radials, stealth vertical antenna system that offers you Real DX results, 160-6M. Whenthis series is completed The 2-Meter Slot-Cube Antenna John Portune, W6NBC Few homebrew antennas have been more popular than the 2-meter J-pole made from ordinary copper water pipe. The main category is Antennas for 2 meters band that is about Antenna projects for 144 MHz. Current ham radio news W8S Team will be active from Swains Island, IOTA OC – 200, 10 – 25 March 2020. Portune's magic windowed ladder line In Aug 2018 QST John Portune (W6NBC) described an improvement he made to ordinary windowed ladder line. Slot antennas are familiar in the commercial radio world, but not to hams. Rispetto a. This is more work but the best. By John Portune W6NBC : This chapter is a side issue, but one of considerable importance. Si cette antenne originale est très intéressante, le concepteur s’est fourvoyé dans l’explication de son fonctionnement, d’où la publication de. Keith Kaiser WA0TJT Net Control Manager. Keeping the Cost Down. Antenna construction notes category is a curation of 61 web resources on , Coaxial antennas, Use of tripods to assemble and balance big antennas, Home-brew Antennas. pdf - from January, 2012 QST magazine. For now the external cavity is a working part of your duplexer. This is a similar design to an arrow antenna. 5 on 2m and amazingly 1:1. ground plane antenna with radials. 2m Projects - Directional Antennas. But which ones are worth the effort?. Find helpful customer reviews and review ratings for Seesii Vector Network Analyzer HF VHF UHF VNA Antenna Analyzer 50kHz-1000MHz 4. I wanted high efficiency 40 Meter antenna with low-angle radiation. To lower the frequency only, you can add short stubs at the corners across from the feedpoint corner. Plus MARS mod it and it opens the frequency range on these puppies right up course not legal to broadcast but in an emergency situation legalities are the least of my concern. - page 45 "An Efficient 2 Meter Antenna Disguised as a TV Satellite Dish" by John Portune, W6NBC Discover a "sneaky" 2 meter antenna that hides inside a satellite TV dish. Amateur Radio operators have distinguished themselves by their ability to build equipment from junk and bits and pieces found around the house. AO-Journal pØ : Amateur Radio web site for Active Operators, Dx, Contest, Lab, Hardware Design, Ham-nalyse, Ham product Review, and more. Smart, Strong, Elegant! 160-6M, Ham Radio is fun again. About Dish antenna for 2 meters band The resource is currently listed in dxzone. The advantage over a simple dipole is that it works on 160 meters even though it is only 140 feet long instead of the 246 feet needed for a 160-meter dipole. pdf: 16M: 07-Jun-2012 21:50: Antenna Theory and Design_ 3rd Ed_ Warren L Stutzman_ Gary A Thiele_ 2013. The antenna is capable to give 2,9 db gain over a dipole when is located more than 15m high, and in this case the radiation angle is 13 degrees. The Classic Rain-Gutter Loop Antenna – Is it any Good? A simple technical look at an HF horizontal loop of. This disguised TV dish slot is equal to a J-pole. This is more work but the best. Elk 's Log Periodics. 21536 Grid Locator: CM98ql TX Volcano Radio Volcano, CA, United States.



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