Homebrew 80 meter mobile antenna


This copper plate has a 3/8” hole in the center that allows the stud of the mast to secure the coil to the mount. Solve Virtually Any Restricted Space Problem - 40 Meter Isotron only 22 inches x 16 inches x 15 inches! All information, images, and documents on this website are the sole property of MFJ Enterprises, Inc. The antenna has to be installed on my terrace, and I do not have the room for a network of radials - certainly not radials with a length of 1/4 λ on 80 mtrs. meter mobile antenna will stubby HF mobile antenna on 80 11/10/2010 · A small loop antenna is described to realize good 40 meter performance in a mobile were 80 and 40 meters. A Stealthy Homebrew Vertical Dipole Antenna Using Mobile CB Antennas Written By: The antenna is in my attic, and my 11 meter CB base radio is in my kitchen. Close enough for “government work”! SOUTH 160-Meter Loop Antenna. via the blog: http Portable Ham Radio Antenna Deployment. Ferrite rod antenna. On twenty meters I can tune down to 1. Make A Quick, Easy, Cheap, NVIS Antenna for Roadside Operating. Conclusion: The 20-meter vertical dipole, center-fed with 450-ohm ladder, will be a good-performing and inexpensive 20- through 10-meter omni-directional antenna, used with a tuner and current balun at the tuner. In practice, it may be difficult to obtain a good match on all bands. If you only have a SWR meter to tune your mobile antennas, that is fine. Those run between 2 feet and 6 feet off the ground (running along my stockade fence, the house, the retaining wall to the swimming pool, etc. Works great. Is there such a thing as a ground-independent HF mobile antenna - in other words, one that would work okay with one of those 3-magnet mag-mounts I have seen? MFJ-1722/1722S 2M/440 Antenna: Mobile Mounts: MP Antenna: Super-M Classic Mobile Mobile Antenna 25-1300 MHz: Super-M Ultra Mobile Mobile Antenna 25-6000 MHz: Opek: HVT-400B HF/VHF Mobile Antenna: HVT-600 HF/VHF Mobile Antenna: VUG-144 2M Thru-The-Glass Antenna: VUG-270 2M/440 Thru-The-Glass Antenna: Mobile Mounts: Procomm: CD144M 2 Meter Magnet Welcome to the home of the Buddipole™, an hf/vhf portable dipole antenna system which is designed to be modular, versatile, and efficient. Making Coax Antennas (FM receiving) Folded Dipole. 5 to 6 dB improvement as measured on 40m by Rudy Severns N6LF. At the time I was using a 80 meter dipole and using a KNWD AT-230 to tune it up on any frequency I wanted to work with my TS-530s. wire lengths shown are for cw & phone center band. Stealth 2 Meter Copper J-Pole for your HOA - Ham Radio Antenna - AF5DN. Some models of remotely controlled HF mobile antennas, are available with 160 meter coverage. Manufactured in Hi-Q-5/80 Mobile antenna; In ten years’ time the antenna was installed on four different 18 wheeler Tractor hauling electronic equipment for a MAJOR truck line. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from MFJ Enterprises, Inc. 22/12/2007 · Amateur Radio document library, antennas, schematics, homebrewing, connections06/07/2012 · N4UJW ANTENNA DESIGN LAB - Ham Radio Antennas - Design 0r Most are designed for ease of construction and expense! The N9TAX 2 Meter Ladder Line This index page covers the antenna system, which is made up of everything from the repeater transmitter or repeater receiver antenna jack out, including duplexers Radio Electronics Pages. The photo to the right is an example of how the antenna may be supported with minimal holes or damage to the wall. Works fantastic! Link to the coil build I used- http://w5jgv. Even an antenna 13 feet in overall (electrical) length will require an inductor in the neighborhood of 600 uH. website). The following description should give you guidance on how to build a mobile antenna for HF bands yourself, using a very cheap CB-mobile whip antenna base. I have a homebrew coil at the base of it and it works beautifully! K4EQE Dark Lord DesignsActive Antennas Schematics / Circuits / Notes - Electronics Tutorials & Circuits - Discover Engineering Hobby Projects - 100MHz ground plane antenna, 6x6 Antenna Loop Find helpful customer reviews and review ratings for Super Antenna MP1DXR HF Portable SuperWhip All Band MP1 Antenna with Clamp Mount and Go Bag ham Radio Amateur at This is now the archive site for the SolderSmoke Podcasts. org ecause I recently ungraded to a Technician Plus license, I wanted to take advantage of my new I-IF privileges. It was mis-labeled. Thorne, K6SOJ, SEC SV SectionAmateur Radio, Antenna Theory, Homebrew Antennas, Hidden and Stealth Antennas, CC&R's, and Antenna restriction. . Oct 20, 2016 75 Meters now available in the VW CC HF Mobile. Here a plan for a Morgain Antenna for 40 and 80 meters band. (The 75 or 80 meter amateur band in the USA extends from 3. by Gene Preston, K5GP I read Rick Littlefield’s article in the June 2008 issue of QST on off center fed dipoles and was intrigued by the idea that the antenna could be extended to cover 80 meters. KR1ST's Magnetic Loop Antenna Lattin Antenna MorGain 80/40 - IU8IHA MorGain 80/40 - IW5EDI MorGain 80/40 - PU2OKE (YouTube) MorGain 80/40 - PDF diagram Multiband Dipole Antenna MultiBand Vee Beam - 6 bands 1 wire NVIS Antenna - PDF instructions NVIS Antennas Petlowany Three-Band Antenna - N5IZU Rhombic Antennas - Joby's Snake Antenna Sturba Curtain An antenna that’s too short can be made to look longer by adding inductance at the feedpoint (base-loaded mobile HF antenna). The Near Vertical Incident Skywave (NVIS) antenna is a half-wave dipole antenna mounted not over 1/8th wave above ground (at the highest operating frequency). Note that 44 + 25 equals about a quarter wave for 80 meters if used as an inverted L antenna. Made the first 75 meter contact on the antenna w/70 watts to Kelley in PA tonight 10/23/16 on 3. Twenty-five feet/7. About 10-80 meters Mobile HF antenna The resource is currently listed in dxzone. So far I had really not been active on 80 meters, due to antenna limitations and its perceived suitability for DX (I am not interested in local rag chewing ). I hope to tune the antenna soon so I will let it is best to set them out here in an effort to correct some of the more popular myths. You can’t work DX without some kind of directional antenna and that’s not very possible on 80. Ham Radio Antenna - The Alpha Vertical Antenna - 6-80 Meter Review. The coil does dissipate some power. This link is listed in our web site directory since Tuesday Dec 30 2008, and till today "10-80 meters Mobile HF antenna" has been followed for a total of 10319 times. 2% on 80m. The overall wire length in my situation is about 60 feet when running a closed loop based on a room size of 12’ x 12’. Dual meters are greatly preferred over the old single meter with switch for forward & reverse power. Magnetic Loops by DL7JV; Meine Magnetic-Loop mit zwei Windungen für 80 und 40 Meter - QRP magnetic loop by KR1ST; PA3CQR Magnetic loop antenna page - Portable HF Transmitting Loop Antenna - Practical Experiments with Magnetic Loop Antennas - Small loop antennas (magnetic loops) - Stealth ST-940B Mobile HF NVIS Magnetic Loop Antenna - Antenna for mobile operation 7Mhz ,10Mhz, 14Mhz, 18Mhz, 21Mhz, 24Mhz,28-430Mhz. You can save money by buying 3/8"" rod and Threading both ends for the 3/8 x 20 mounts or just buy 3/8 x 20 threaded rod. It shall be easy to adjust (i . We had is a practical antenna for mobile Homebrew 40/80 Trap Dipole Design : This Antenna design was one that I used about 4 years ago, Update On New Radio In The Mobile;I attempt to improve the feedpoint impedance of my HVU 100 HF Mobile Antenna configured for 40. Simple, effective, long-range, lightweight and fits in your BDU pocket. Shop with confidence. This is my first home brew “DIY” antenna for use on local 2 meter repeaters and simplex frequencies. S. + Items in search results. <= Back to Dayton New Products Hy-Gain 80-6 Meter Patriot Vertical Antenna AV-680, $549. I wanted high efficiency 40 Meter antenna with low-angle radiation. Home • Products • Technical Info • Sample Photos Warranty • Dealers • Contact ©2010 RF Parts Company. via the blog: http Amateur Radio, Antenna Theory, Homebrew Antennas, Hidden and Stealth Antennas, CC&R's, and Antenna restriction. While a 160 meter antenna won’t fit in your attic, one for 20 meters or even 40 meters will, often surprisingly well. Jul 4, 2015 Is it because an 80 meter mobile antenna is impractical, or just not your preferred band? For me Google " Homebrew screwdriver antenna ". I liked the build quality and the transformer claims to be able to handle up to 200W which is about what I have planned. Remove. - Portable Vertical Antenna for 75m and 40m makes up a compact 28 feet high antenna. Shark Single Band Mini HF Mobile Antennas. If you are serious about HF mobile operation the Hustler HF Mobile System is the obvious choice. walking the length of a 1/2-wave 80 meter antenna…Please see to your Homebrew Twelve Core i7 All you need to do is correctly feed the antenna for 160 meters, and you can get on 160 with a reasonable signal depending on how careful you are in setting things up. Diamond ® Antennas are sold through authorized dealers. Simple, inexpensive and lots of fun! Here is an easy to make home brew antenna that can get you on the air working satellites or be built for use as a portable hand held antenna to extend the range of your HT. 80 meter homebrew Coil i made for my Buddipole. P 9 Brilliant Ideas To Make Your Own Dummy Load. 1. Using a 40/80 meter dipole usually how hams get on 160 for the first time. Background. I already have an 80-meter dipole and I really enjoy CW on NEWS! N6HH "PETE" has set a WORLD Record using a 1994. The laws regarding the use of the radiospectrum are actually fairly uniform, and established byinternational treaty, for I'm using this 102" whip as an 80 meter mobile antenna. Narrow Your Results Diamond Antenna Mobile HF Monoband Antennas. NOTE *** A wide range tuner may be needed to tune this antenna on160- 6 meters. The antenna itself is 3. Super Antenna TM1 Low Profile Tripod SuperMount is a compact small collapsible portable antenna tripod with coaxial mount made by Super Antenna Systems Corp. The feed line is connected to the CONTROL CONSOLE connector. I have a homebrew coil at the base of it and it works beautifully! K4EQE Dark Lord DesignsActive Antennas Schematics / Circuits / Notes - Electronics Tutorials & Circuits - Discover Engineering Hobby Projects - 100MHz ground plane antenna, 6x6 Antenna Loop Above: the Jungle Antenna deployed for 51 MC operation. " (Keep It Simple Sherlock) by D. K1GMM Green Mountain Maniac / People & Blogs. It also supports my 80-160 meter fan dipole and a 40 meter delta loop, along with my B&W multiband folded dummy loader I mean inverted vee. With these two, I can operate anywhere from 80 to 6 Meters with no problems. com/mobile_antenna/ Made the first Are there plans available for an inexpensive multi-band mobile antenna I can use with my Heathkit HW-101 (run off an HP-13 PSU)? Can such Feb 12, 2006 Much taller than the average Ham mobile antenna, this tree branch snapper tops out at The 40 meter loading coil installed on the antenna. Many more antenna configurations are of course possible. Page 121 of MFJ new 2013 ham catalog Hy-Gain’s PATRIOT HF vertical antennas are the best built, best performing and best priced multiband verticals on the market today. - Uses elevated radials for higher gain. 15 meters works with a tuner as a 3/2 wave gain antenna, from the 40 meter antenna. 5 across both bands. This is the perfect antenna for a 6 meter repeater project or high performance base station installations. This dualband antenna similar to a folded dipole permit to operate low bands by using a very limted space. The 80 meter bandwidth of my 6 ft loop is 11Khz. An Attic Coaxial-Cable Trap Dipole for 10, 15, 20, 30, 40, and 80 Meters John DeGood, NU3E nu3e@arrl. The size of the antenna makes a Half wave length on 80 meters, and with the traps a half wave on 40m with a SWR (standing wave ratio) of 1:1-1. General information. One of the six plastic spacer arms was cut from a larger piece of plastic. maximum performance from a mobile antenna installation. 5 feet • 80 meters = 135 feet • 160 meters = 270 feet. It averages about 35 feet high, and is fed with about 80 feet of 450 Ohm ladder-line. 90 MHz. Below a picture of the antenna on the back of our barn. Also, our RACES Room at the County EOC has 160 Meter capabilities. As long as the elements are symmetrical, they do not have to be in a straight line. There is no control wire required for this antenna switch. This antenna is 58 ft tall and is mounted on a hinged base. Today, I’m going to show you how you can easily build a homebrew 2 Meter ¼ Wave vertical antenna for under $10. The large diameter yields broadbanded coverage of the 80 Meter Band. 2 mhz will not really effect your antenna. 25 6. In the future, you can use the information to create your website, blog or to start an advertising company. If a longer antenna is desired, the provided antenna can be lengthened. Portable HF using Buddipole Deluxe Antenna - European stations mostly receiving me via Long Path. 0 MHz. Relative ½ wl antenna size • 10 meters = 17. Make sure to center the SO-239 in the hole before drilling the 4 screw holes. Here’s an easily transportable vertical antenna for 20 meters collapsible to 4 feet that costs about $2. Many amateurs are very restricted with the space they have available for HF antennas. 95 but Homebrew. First, I must say that setting up a base radio (11 meter) and accompanying antenna is a new hobby for me. Using the formula above you will soon see that an antenna for 17 meters is approximately 12 feet 11 and 5/32 inches in length. This entry was posted in Antennas, Guest Posts, Ham Radio, How To, News, Shortwave Radio and tagged 20 meter magnetic loop antenna, Antennas, Ham Radio, Harry Lythall (SM0VPO), Homebrew Mag Loop Antenna, how to build a magnetic loop antenna, Mag Loop Antennas, Magnetic Loop Antennas on May 30, 2018 by Thomas. In my case, I have two antennas - an 88' Extended Double Zepp (EDZ) wire antenna and a Butternut HF9V antenna. 10-160 METER 60' END-FED ANTENNA The Alpha J-Pole Sr Antenna is only 60 feet in length. (Four different rigs). A Low Cost Loop Antenna for 160 and 80 Meters. Build a DIY a 2 Meter Vertical Antenna Here is the list of parts needed to build a 2 meter vertical antenna: The AV18VS is a nifty multi-band antenna that covers 10-80 meters. The Yard Store has a lot of surplus aircraft aluminum from Boeing, Spirit, Hawker/Beach, Cessna, and Bombardier. NVIS AS-2259 Antenna By Mike Melland, W9WIS Page 3 of 7 Construction Details Drill a PVC Cap to accept SO-239 (7/8") and 4ea #6 screws, lock washers and nuts. The lower bands (80 and 40) want around 100 ohm, 30 and 20 want a 200 ohm feedpoint and 17 through 10 meters would be happiest with a 300 ohm feedpoint. There was a good match on 80 meters but with a very limited bandwidth. mobile website <3;HF Antennas for Portable Use John DeGood NU3E • Mobile Operation – 2 el 20 meter wire beam – used by N7UN. The DXE-60VE-1P vertical antenna system includes the antenna elements, stainless steel clamps, A Top Loaded Vertical on 80/160 • Split the difference and load a Tee or inverted L on both 80 and 160 (w/tuner) – 90-100 ft is 3/8λon 80M, 3/16 λon 160M – 160-170 ft is 5/8 on 80M, 5/16 on 160M Radial Systems • Provide a return for the fields and currents produced by an end-fed antenna • The earth is lossy, burns transmitter power A Stealthy Homebrew Vertical Dipole Antenna Using Mobile CB Antennas Written By: Scott Wolfington The following article is based on a HamUniverse. A 30 foot run of RG-8 coax runs into the basement shop, to an antenna switch and HF radio. I used a coax connector at the end of the 300 ohm wire, and hooked it up to 100 ft. On VHF, I use a roof-rack-mounted 5/8-λ commercial mobile antenna that retails for $14. I close the loop completely for 160 meters operation. 2 watts on 80m using a traditional HF vertical. As the mast now will probably bend to the direction of the 80 meter wire 1 (or better 2) wires could be used to keep the mast straight. Mobile Antennas III Another way of using a mobile antenna is to mount it on your car and provide a way of switching the antenna to a length of coax run from your home station. Or "K. I just ordered a Diamond Discone antenna for satellite stuff so it will probably be going on the tower soon also. Homiebrew Base Loaded Mobile HF Antenna 6 thru 80 meters Bushcomm Highlander 8 Mobile Amateur Band HF Whip antenna - Duration: 80 meter homebrew Coil i made for my Buddipole. The inductance required to resonant a 160 meter, 8 foot long mobile antenna, is nearly 5 times greater than that required to resonant an 8 foot, 80 meter antenna. If you read carefully you will see why a long helice behaves more like a radiating transmission line and less like a conventional inductor. Just find some local sticks for Find helpful customer reviews and review ratings for Super Antenna MP1DXR HF Portable SuperWhip All Band MP1 Antenna with Clamp Mount and Go Bag ham Radio Amateur at Amateur Radio, Antenna Theory, Homebrew Antennas, Hidden and Stealth Antennas, CC&R's, and Antenna restriction. 6. Wembagher, Argentina HCDX Antenna Special, 1 August 2004 This is an antenna specially calculated for the tropical 60 meter band, with instructions for those who do not possess a lot of space attheir locations. › 60 meter band hf antennas Where two-way amateur radio communication is authorized on 60m, it has generally been within the frequency range 5250–5450 kHz, but the whole of this range is not necessarily available and allocations vary significantly from country-to-country. use the jetstream data sheet provided. Just find some local sticks for Find helpful customer reviews and review ratings for Super Antenna MP1DXR HF Portable SuperWhip All Band MP1 Antenna with Clamp Mount and Go Bag ham Radio Amateur at . 58 m (21’-7”) from the vertical wire #1. 42 meters or 11 feet 2 inches long from the top of the mounting spring to the tip. This provided a place to mount the coil on the side of the wooden mast which is the bottom section of my vertical. I haven't been able to erect a decent 80 meter dipole antenna. 95. With a length of 11 meters for the mast one or more additional guy wire could be used. The unique design characteristics of this 10-160 Meter HF JPole antenna enables it to approach resonance on the major HF bands (10/12/15/17/20/40/80 Meters), all of which presents an SWR that is low enough for external tuners to achieve a near perfect match, including 160 meters. This is not an antenna that I could ever build, due to not having a 40 meter high support, or 80 meters of space all around for the radials. The normal quarter wave ground plane antenna consists of a vertical radiator which is insulated and centered between 4 horizontal surrounding radials which extend out from the base of the antenna. The raw End-Fed antenna will go through impedance swings as high as 5K Ohms, or more, at even multiples of its 1/4 wavelength design frequency. antennas. This project gives instruction on how to build my version of the G5RV wire antenna that is used on the 10-40 Meter Ham Radio bands (28MHZ to 7MHZ). The HD-80 matching coil is 2 inches in diameter and 2. 62 meters) of RG-8U coaxial cable with UHF connectors on both ends. A Low Cost Loop Antenna for 160 and 80 Meters Antennae for the Low Bands. Short dipole for 60 meter Tropical Band By Enrique A. A Broadband 80/160 Meter Dipole An easy to build single wire antenna for 160 and 80 meters with a better than 2 to 1 swr across the 80 meter band. £15. 5-Band, 1/2 wave rotatable dipole for 40/20/15/10/6 meters. The model was made in MMANA, with 200 segments per wire. The net result is the antenna’s low base impedance essentially remains un-changed to the coaxial transmission line on 40 meters. If you are considering a small loop antenna be sure to understand this is a very small bandwidth antenna. It’s modeled after the basic delta loop design and is fed with a 1/4 wavelength of 75 ohm coax (RG-59U). My TX Antennae. 5 meters to do experiments with vertical antennas. com in 2 categories. Simple NVIS Antenna tree, a post, a rock, or even a stake in the ground. After a few talked he gave us an article about vertical antenna that he took from the internet. It's an 1/8 wave vertical on 160 meters also. 59 million miles on his Hi-Q-5/80 antenna bought nearly 20 years ago. Is it because an 80 meter mobile antenna is impractical, or just not your preferred band? For me, 75/80 is my preferred band but I'd like the ability to go all the way from 10 to 80. Further, I already had a nice 2m/70cm antenna available that extended about 40 inches high: a ½-wavelength antenna for 2-meter band, and 5/8-wavelength for 70-centimeter band. keep experimenting and have fun Make plans to install your DX Engineering 80 Meter Full Size Quarter Wave Vertical Antennas and join in the fun of having the best possible signal on the 75 and 80 meter bands with a great antenna! Warranty HF Mobile Installation Tips Diamond ® Antennas are sold through authorized dealers. The 80 Meter Off Center Fed Antenna (OCF80Q) is also a great multi-band antenna. In this section you can find synonyms for the word "homebrew antenna coils", similar queries, as well as a gallery of images showing the full picture of possible uses for this word (Expressions). The ARRL Antenna Handbook categorizes general HF vertical efficiencies at around 80% on 10m; however, efficiency can drop to around 0. Okay, as I noted before, my first antenna wasn’t a dipole. , GMRS, Homebrew, Mobile, NTS, RACES put up a 20 or 40 meter antenna and since both radios Attention Hi-Q HF Mobile antenna owners! We are receiving inputs from customers, mostly from 18 wheelers that they have surpassed the Million miles on the Hi-Q antenna installed on their rigs. I've been researching homebrew antennas for a little while and decided to experiment with an end fed multi band antenna I found on ebay recently. So I preferred homebrew antennas from the start. P. Control signals are passed through the coaxial feed line. W. 15 MHz, just above the 80 meter band. Random Length Radiator Wire Antenna. Richard Lau) at Nibong Tebal, South 80m Antenna for small gardens. Buy a Valor pro-am PHF series HF mono band 80 meter > antenna. HF Mobile Antenna Matcher Lower SWR and provide more power to your mobile antenna. In this picture, the 40 Meter loading coil is in place. A vertical seemed the obvious answer, a naturally low-angle radiator. But I’ve worked with lots of new hams, and a dipole is cheap, quick, and easy to construct. Here is a photo of W2BRI with his 12 foot square magnetic loop antenna. Ordered this 80 meter whip. 5:1, and a impedance of 40-60 ohms depending upon where in the 40 meter band I tuned. I don’t have enough room for a full-length antenna. ). Experience has shown that most external tuners and many internal tuners will tune 80–6 meters with an antenna length of 22’ to 30’. For a lossless antenna the radiation pattern of a very short vertical is almost the same as a λ/4 verti- The 40 Meter Isotron Antenna. Homebrew or 40 - 80 meter dipole. Antennas in the Attic: Ham Nation 215. JK Antennas will selectively and progressively make available most of the legacy Force12 yagi models such as the XR5. Dipole and Inverted V Antenna Basics. I have documented a short antenna for the HF bands, but here is a simple method of mounting it, and a method of further reducing the physical length. Discover (and save!) your own Pins on Pinterest. Materials needed: 50 ohm coax any length 75 ohm coax 37 feet of wire . Matches mobile antennas 10-80 meters. This is the same design as the ‘Carolina Windom 80 Special’ You can buy one of these for £109. The unwanted interaction occurs because the 6-meter antenna and it's coaxial cable are resonant slightly below the 20 meter band. antenna tuners on the market today make use of a 4:1 balun (often, a poor balun at that) which would be pretty good for 300 ohm twin lead to 50 ohm coax, however they do not provide the proper ratio for 450 or 600 ohm lines. K2EFG portable operations 20 meter Buddipole 100W FT857D. It will be updated periodically, but new podcast episodes will be announced . In San Diego we have an active 160 Meter group, 1. 160 Meter Antenna Tour. A 40 meter four-square vertical array is a good alternative when a horizontal antenna isn’t possible if a horizontal antenna can’t be installed at least 20 mtrs high a very good transmitting antenna for a second radio an excellent receiving antenna A 20, 15 or 10 meter four-square vertical is a useful antenna tuner utilizing a variable inductance and capacitance matching network can compensate for the frequency dependent impedance of a fixed-length antenna. 2-meter beamsone vertical and one horizontal. Introduction to the 20 meters amateur radio band. Electromagne2c' Wave'Polariza2on' • Electric'and'magne2c'waves'are'at' right'angles'to'each'other' • Magne2c'wave'dissipates'within'a' few'wavelengths'of'antenna Vertical Dipole Portable Base Mobile Alpha Magnetic Loop antennas The best test of a mobile antenna is to operate it on the lower frequencies. While 1/8th wave works reasonably well, better coverage is obtained if the antenna is mounted at about 1/20th wavelength above ground. This model has a 39 meter long radiator with 8 elevated (1 meter high) radials of 39 meters each, for a total of 351 meters of wire. Antennas. For 80 meters, I connect the opposing walls giving me 2 “L” shaped legs of the dipole. Homebrew 80 Meter Antenna Construction I attached 88 ft. 5 MHz with a 500 pF capacitor but it's efficiency would drop to 7. After having studied many possible configurations, I explain why I chose a modified version of the FRI-Match for my homebrew antenna tuner. Have a 6 foot whip that came with it but also use a 56 inch whip. - A standard / remote tuner at the feedpoint will ease construction and allow operation from 3. The main category is Mobile antennas that is about mobile antennas. I assume that must be the low angle radiation on 80. This started out being a stelth antenna for a friend. The result is a "hybrid" dipole or "ungrounded" vertical amateur radio antenna, depending on your point of view! The feed point is just outside my basement shack window, about one meter (3 feet) above ground. Each American made antenna covers a single HF band with a power rating of 250 watts P. 21/01/2015 · Effective HF Mobile Antennas 80 or 40 Meters is antenna efficiency. run a full-sized mobile antenna, so some sort of loading coil(s) will be needed. 00 to make. If this is true it should be an impressive benefit for otherwise compromised mobile operations. In the summer of 2010, I decided to construct a 1/4 wave 80 meter vertical using 3" OD Aluminum Tubing. 5 in the 80 meter band. The wire can be strung out in any convenient direction. The unun secondary taps into the inductor at the 200 ohm point on 80- and 160-meters. Contact one of your local Diamond ® Dealers for current price & availability. Antennas, 80 Meter Yagi, Designing and Building a 3 Element, (Dalton W6KW), CQ 1998, Jul. I see simple wire dipole type antennas selling in QST for over a hundred dollars——duh!!!! Homebrew 40/80 Trap Dipole Design This Antenna design was one that I used about 4 years ago, it worked exceptionally well on 80m and 40m. 80 Meter Frame Antenna by SMØVPO I keep on and on about my little balcony and the antenna restrictions it imposes on my HF antennas. , balun transformer, gamma match) How To Install A NMO Ham Radio Mobile Antenna Moun Ham Radio 40 meter homebrew ground mounted antenna DIY Ultralight UHF Antenna. DualBand 2M/440MHz mobile antenna Very short yet efficient antenna, mainly used in metropolitan areas where extended range is not critical. A 160 meter antenna for small lot - Ham Radio Library Inverted U antenna for 160 meters - IW5EDI Simone - Ham-Radio Using our free SEO "Keyword Suggest" keyword analyzer you can run the keyword analysis "homebrew 160 meter antennas" in detail. On the HF bands, a bumper-mounted “homebrew” antenna—that costs about the same as the VHF antenna—added the bonus of a fun day at the workbench! My HF antenna is a “bug-catcher” style vertical that has netted me CW Find great deals on eBay for 80 meter mobile antenna. If you listen to the DX activity on the Low bands, you'd be forgiven for thinking that you're wasting your time unless you have a 4 Square Array, 20 acres of Beverage antennae, a huge Amplifier, and a neck like an anvil. After a successful experiment with a 1/4 wave vertical for 40m we wanted to build a vertical for 20m too. The history and basic theory of this antenna dates back to 1946. the oak tree at 3. Post 1717. Welcome to the home of the Buddipole™, an hf/vhf portable dipole antenna system which is designed to be modular, versatile, and efficient. Our 7-15 MHz 6 foot diameter model is half that size and could be resonated to 3. Part of the issue is the requisite inductance of the coil. However when I connected the loaded 80-meter base to the base of the 40-meter element rather than the counterpoise as I had with the other elements I was pleasantly surprised. Selecting a portable HF antenna (II) What antennas are today available on the place for portable operations ? By definition a portable station is a station located at another location that the base one but not set up as a fixed station (thus /P, not /A). pg. The aluminum was purchased from the Yard Store in Wichita, KS, just 30 miles south of me. He loved working 20 meters, but the housing community he moved into prohibited antennas that could be seen by the public. I just walked past a vendor out there selling G5RV antennas and there was a line of guys buying them, paying money for an antenna anyone can make at a fraction of what he was charging. Or I could buy a antenna tuner and > a largewhip. 9 MHz Full-Wave Loop Antenna. I began by looking at a classical quarter wavelength “ground plane” antenna at nine feet (safe Save 40 meter mobile antenna to get e-mail alerts and updates on your eBay Feed. Homiebrew Base Loaded Mobile HF Antenna 6 thru 80 meters. A tall order indeed! The radiating element of a vertical monopole antenna is basically half of a dipole. The left picture shows the coil next to an MFJ antenna analyzer. 35 36. Delta Loop Antenna. C3, C3S, C4, 4BA, 5BA, 6BA etc and the vertical lines such as the Sigma-5, Sigma-80, etc. Adrian PA0RDA and I once bought a bunch of glass fibre masts with a length of 12. Unfortunately the 6-meter antenna interacts somewhat with the GS3 antenna on 20 meters. Impedance 80 – 150 ohms, use 2 – 1 or 4 Easier to hide in antenna restricted areas Antennas 101 Part 2 Directional And Gain Antennas Near the front of the van is a quarter wave 6-meter antenna. 160 Meter Verticals optimizing mobile verticals. com ✓ FREE DELIVERY possible on eligible purchases. HF Antennas Especially stealth models for those in an HOA Mobile Antennas in the back yard . SIDE NOTE: you may notice the model numbers of some of our antennas have weird letters at the end. Skywire Loop Antenna-- From The ARRL Verticals 80 Meter Antennas Antenna Projects From The YCCC-- Double-L For 80/160, Two Wire Beverage, A Poor Man's 160 Meter 4-Square, Using a 4 square Vertical Phased Array to improve your 80 and 160 meter signal, -- From The Yankee Clipper Contest Club A 4-foot/1. 21 meters antenna "stinger" from an old mobile antenna. This was created as a fun project to demonstrate how to enjoy operating HF in the field with a home-made portable antenna without spending a ton of money. Example: N6HH has 2. Note: the discussion below primarily deals with loading inductors used in mobile HF antennas rather than long radiating helices. NVIS Antennas: Page 1 I feed the loop with a 1 to 4 balun on 80 meters and in series with the balun, an electrical 1/4 wave of 75 ohm RG-6 coax to match it on 40 This model has a 39 meter long radiator with 8 elevated (1 meter high) radials of 39 meters each, for a total of 351 meters of wire. Since Valor went under I don't know of anyone who makes a 160 Meter "hamstick" style of antenna so, I made one. For our customers with more severe weather, we offer the 6M7JHVHD. I chose 58' for Mid 80 Meter Operation. E. The initial meter readings by the antenna analyzer gave a SWR of 1. This is the compact dipole used for HF communications on the set of the ABC Television show “Last Man Standing” with Tim Allen. What others are saying antenna on 40 meters and a shortened 80 meter The 4 wires used for the antenna elements are also used with rope to provide the support or guying for the 15 foot mast. 80 and 160m. theory, we could fashion a four-wire antenna for the 80, 40, 30, 20, 15 and 10-meter bands. You do not need a tuner with the 101 as when you tune the finals that matched the rig to the antenna. some photos of one of my 9:1 baluns. 45 - 3. I can’t get an 80-meter antenna high enough to do any good. Worked 37 countries mobile with this antenna using a TS-480SAT and it's in ternal antenna tuner. 5 MHz. performs well, but is “a cloud burner,” good for local contacts within 500 miles. Most Mobile homes do not have an “attic” as such, but most other homes do. 80-meter band. homebrew 80 meter mobile antennaBuy 80 Meter Band Mobile HF Stick Antenna: Radio Antennas - Amazon. I wondered how hard it would be to homebrew a single band antenna for 75 meters to work with my low power single band radios. wire length to support 80 meters more supplied, the vertical antenna is designed to operate on 60 meters. Volunteers of the Honolulu Emergency Amateur Radio Club (EARC) carefully assemble the 6-40 End Fed matchbox antennas for those who prefer not to build one. A fixed vertical antenna on 160 meters is comparable to a typical 80 meter mobile antenna. Also Great For Limited Spaces. 21 meters antenna "stinger" from an old mobile antenna. Hustlermanufactures and sells more HF mobile antennas world wide than anyone. typical of the stainless-steel whips sold for 11 or 10 Meter operation, Home Brew 80/40 Meter Vertical Antenna : I decide to try my hand at building a mock up of a 80/40 meter version of a butternut antenna. The antenna is comprised of three lengths of 12 foot aluminum which telescope together. The loop construction technique provides for light weight and cost as compared to a 15 ft loop constructed from copper tubing. The Isotron Antenna. The 6M7JHV was originally designed as a lightweight EME antenna, but it is a solid performer on terrestrial propagation also. Lock washers go under the nuts. January 27, 2010 - Installed new Model 75A Tar Heel Screwdriver mobile antenna for 80 through 10 meters. It is a great antenna for HAM radio operators living in HOA controlled housing, hams desiring a very stealthy RV antenna, Field Day operations, sailboats, portable operating, backyard installations, ARES, RACES, etc. Above: This is my SOUTH 160-Meter loop antenna. The ladder line is attached to a 4:1 balun at the West end of the house's roof. Using 70 feet of coax from balun to house. 6 antenna is typically defined as having an included angle of 120 degrees or A Practical NVIS Antenna for Emergency or this particular design was found to work on the 80 and 40 meter amateur bands using a good tuner without Super Antenna® is a Base Stations Pedestrian Mobile. Manufactured with 6063 corrosion-resistant aluminum tubing and stainless steel hardware, this antenna is very durable and attractive. This Pin was discovered by Ken Schave. Pg. 17 Meter Band Mobile Amateur Radio Stick Antenna. Richard Lau) at Nibong Tebal, South of Seberang Perai, Penang. - Assembled in 20 minutes by two persons. There are a number of homebrew "Bugcatcher" designs out there, W6RCA's The average efficiency of a very well designed 80 meter mobile antenna is something on the order of maybe 1% fudge a bit and call it 3% (if Shop Mobile Whip Antennas and get Free Standard Shipping on orders over $99 at DX Engineering! Mobile Whip Band / 80 meters. 02 Details about HF Mobile Antenna I find that it works reliably on the frequencies above 80 meters with only two walls connected as a dipole. I. So the Magnetic Loop antenna 80-30 mtrs Also, the SWR meter of my antenna tuner (tuner in bypass mode without bypassing the SWR-meter) 10/07/2015 · Author: Topic: Homebrew 10-80 meter mobile antenna plans? (Read 7483 times)22 Different Wire Antennas. My inverted-V at 40 ft. Discussion in a 40 meter antenna can be Homemade Carolina Windom antenna. HF dipole/wire antenna supports. Just find some local sticks for Find helpful customer reviews and review ratings for Super Antenna MP1DXR HF Portable SuperWhip All Band MP1 Antenna with Clamp Mount and Go Bag ham Radio Amateur at An 80-Meter Vertical Helix A 4-foot/1. But again, I have > a hard time spending 300 bucks for a mobile antenna. Resources listed under Mobile antenna category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. e. of copper wire to 25 ft. Find great deals on eBay for 80 meter mobile antenna. Sweep band in a tune or AM position to see if your antenna needs to be shortened or lengthened to center on your favorite frequency. HF Mobile Antenna - Ampro 80 Metre (3. A tuner is required to match the antenna to your transmitter. and VHF mobile every day. 1). the next longest 40 meter is on the bottom for best stability in wind and strength. Drums/music by K1GMM. I could put something up but the coax would be too long and lossy. An antenna that’s too short can be made to look longer by adding inductance at the feedpoint (base-loaded mobile HF antenna). A dipole antenna designed for one frequency can function over a broader frequency range with a manually or automatically adjusted antenna tuner. Works very well. GET A PREASSEMBLED ANTENNA. The car provides the counterpoise to the antenna, but it is connected to the base station in the house. Mobile Antennas WA4DXP ♦ Tuning. The base of the coil is a solid piece of copper that is the full diameter of the coil. mobile antennas is a curation of 67 resources about , Antenna Mounts, Placement of a Mobile Antenna, 160m Mobile Aerial by M0VEY, 160m DX Mobile Aerial, The Fan-tenna. The shunt capacitor (C1) reactance on 40 meters is roughly ten times that of the antenna’s base (feed-point) impedance and therefore has a negligible effect on match-ing. G5RV Multi-Band Antenna The G5RV antenna, with its special feeder arrangement, is a multiband centre-fed antenna capable of very efficient operation on all hf bands from 3. ) Good success was seen with a MFJ 1988T portable telescoping antenna. most mobile antennas require replacing resonators, 80-160 antenna for the small garden. Im on the side of a hill, close to a valley floor, and Im surrounded by quite a few trees. You'll also find here many innovative new Accessories for hf/vhf portable antennas. The rest of the antenna wire is pulled down with a (homebrew S-match in my However if like me you’re faced with a small lot or perhaps in need of a stealth multi-band antenna or just want to get on 80 or SWR Plots of the 80 Meter 80 meters to 6 meters vertical antenna Surprisingly I have made quite a number of 6 meter contacts with a full size G5RV. 5 to 4. 0 SWR without 160-Meter Dipole Height N0GW - Gary Wescom 80 249 60 1. The original design is from Harry Lythall, SM0VPO (ref. Super Antenna MP1 Antenna is an and DP series antennas to cover 80 Amateur Radio, Antenna Theory, Homebrew Antennas, Hidden and Stealth Antennas, CC&R's, and Antenna restriction. Mobile- to-mobile contacts on 80 meters always have been possible up to distances of 1000 miles. of 300 ohm wire. Half Delta Loop Antenna. amateur radio band. The Model 75A Tarheel Antenna. If you have to have just one antenna for HF, maybe this is a good choice, especially during the current great low band conditions in this low sunspot point in time. It is a heavy duty QRP/Low Power antenna that uses #14 wire instead of the usual #16 wire used by our other QRP/Low power models. 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. Several models have been constructed and have been in use for over a year. Oct 2, 2016 Slapped this together from some parts and pieces. 80 Meter Band Mobile HF Stick Antenna See more like this. For over 40 years, Larsen engineers have been designing high-performance mobile antennas in a variety of electrical types and configurations to meet the most demanding performance criteria and operating conditions. 917 while mobile from Manchester VT. A quarter wave antenna mounted solidly to the vehicle roof is a great option, but I wished to avoid drilling into the roof for mounting or coaxial cable routing. Much taller than the average Ham mobile antenna, this tree branch snapper tops out at 17 feet, 10 inches above the road. By implementing a helically wound design a 6ft diameter 80 meter text book loop seems to emulate a 10 to 15 ft diameter loop of a single conductor. The Image below shows the materials you will need to build a 2 meter 1/4 wave vertical antenna for the 146 mHz. Any 160 meter mobile antenna will have very poor efficiency, perhaps as low as . for the 160 Meter Band. Close enough for “government work”! A Broadband 80/160 Meter Dipole An easy to build single wire antenna for 160 and 80 meters with a better than 2 to 1 swr across the 80 meter band. 20 meters and 10 meters are mechanically between the 80 meter top and 40 meter bottom. This base loaded antenna costs about $129 USD and is usable on 80 to 10 meters. Close enough for “government work”! Any ham who has ever operated HF mobile knows that mobile antennas, specially those for the lower bands, tend to be notoriously narrow-banded. 5 inches long. The electri-cal type or design of the mobile antenna is commonly referred At one point I decided to try the same approach with a loaded 80-meter element. 22 Different Wire Antennas. There is hardly any CB traffic up here, but surprisingly, there is quite a bit of GMRS traffic. All Bands Vertical Antenna-HF (homebrew) A few months ago my friend 9W2 AYR(Anuar) and I visited my new friend 9M2LR (Mr. Your tuner is connected to the antenna center "T" using 100 feet of RG-8X coaxial cable. With my Dentron Super Tuner, I can tune the antenna on any HF band 80m and above, and it seems to work just as well or better on 40m and 30m as did the fan dipole. They have an antenna for the higher bands which can be used with varying success on 160. How well does the Buddipole tune? NPOTA Activation in DC: Constitution Gardens (DZ02). All you need to do is correctly feed the antenna for 160 meters, and you can get on 160 with a reasonable signal depending on how careful you are in setting things up. Latin America Probably doesn’t need listening antenna. TV antenna 20 mtr 40 mtr 80 mtr . What I received was a a stinger for 80M and a base labeled 80M but the base was for a 6M antenna. Post 1718. Adding 80 metres to a 40 metre dipole. Chatted all the way home about 15 miles. 24 Antennas, A (Moderately) Tunable 80 Meter Antenna (Mitchell N5RM), CQ 1991, Apr pg 50 However, on 80/75, 40, 30, 17, and 12 meters it works great! I do have elevated radials under it. For the homebrew antenna, the base will just support the mast, and the for a 60 and 40 meter version of the antenna. I built a 80 meter vertical, then put a matching network at the base for 40 meters. Worked 18 national parks this last year while running down the highway at 70MPH. Horizontal Antenna Examples • N2CX Gusher classic – wire dipole, cut for any single band 40-10 – RG-174 coax feedline to crimped BNC • N7UN multiband dipole – jumper across insulators for band change – 40/30/20 meters • W7EL FD – 2 el 20 meter wire beam – used by N7UN Shop HF Stealth and Portable Antennas and get Free Standard Shipping on orders over $99 at DX Engineering! 10,12,15,17,20,30,40,75 and 80 Meters. Post 1716. ” At the time I was using a 80 meter dipole and using a KNWD AT-230 to tune it up on any frequency I wanted to work with my TS-530s. The nylon lines connecting wires #2 and #3 to the ground are 6. 5MHz) 7MHz Ham Amateur Radio 40 Meter Band HF BNC QRP Telescopic Antenna . One of those Jackson 804 / 805 VHF tuning capacitors with about 25pf will tune the antenna down to 3. According to the literature, small “magnetic” loops like this have an antenna aperture similar to a full size dipole. ï frqqhfwru rq wkh 62 douhdg\ lqvwdoohg lq wkh hqforvxuh 6wuls uhpdlqlqj juhhq zluh hqg ´ dqg ehqg lqwr d krrn iru frqqhfwlrq wr wkh 62 The Near Vertical Incident Skywave (NVIS) antenna is a half-wave dipole antenna mounted not over 1/8th wave above ground (at the highest operating frequency). of RG8X, the gray coax cable. Antenna Loading Techniques The End W5RH. 0 and Since I wrote that blog post, I put up a homebrew version of the Cobra Antenna. While transmitting with power, I was getting about 1. Feb 12, 2018- Low-cost home brew antennas for amateur radio | See more ideas about Ham radio antenna, Radios and Ham. 2 to 1. This project was developed as a result of experiments to become QRV on 80 meters, again, using the little balcony. Some useful information for tuning mobile antennas gained the hard way! CHECK MAX RF OUTPUT on desired frequency (FS meter). This multiband vertical designs provide 9 band coverage encompassing the 6, 10, 12, 15, 17, 20, 30, 40 and 80 meter bands. 945 MHz, nightly, around 7 to 8 PM. In Case B the hat is placed at the top of the antenna; like top loading, it is designed to increase the current flow in the upper part of the antenna; top hats make the antenna unsuitable for mobile operation but can improve antenna performance. Just find some local sticks for Find helpful customer reviews and review ratings for Super Antenna MP1DXR HF Portable SuperWhip All Band MP1 Antenna with Clamp Mount and Go Bag ham Radio Amateur at Homebrew AS-2259/GR NVIS Antenna By N3OC For the homebrew antenna, wire length to support 80 meters more efficiently on their version of this antenna,An automatically tuned 7 to 30 MHz mobile antenna. So here's my > homebrew idea. 42 Antennas, 80 Meter Yagi, How To Build A Relatively Small 2-Element, CQ 1998, Jun. Half way there is another 80 meter coax trap. 7%, similar to an 80 meter mobile antenna. Takes too much wire. Amatuer Ham Radio Antennas . All information, images, and documents on this website are the sole property of MFJ Enterprises, Inc. Each radial is evenly spaced (90 degrees apart from each other) around the vertical element. Also in the mobile, I installed a Uniden BEARCAT 980SSB Single Sideband CB and a Midland MXT400 GMRS radio. Enter the desired frequency. Attic mounted HF Magnetic Loop Antenna for HOA. A really good one perhaps 1%. This is a very simple antenna to build. All Bands Vertical Antenna-HF (homebrew) A few months ago my friend 9W2 AYR(Anuar) and I visited my new friend 9M2LR (Mr. THE G3XOV JOYSTICK VERTICAL (HF experimental W6CAW "Fixed" Mobile 160 Meter Whip. "2 Meter Halo Antenna by Mike Fedler "Including descriptions so you can build your own"" "2 Meter Halo Antenna Project Background & Goals There are two previous versions of my loop antenna that were built before the antenna you see now. Cushcraft achieved a major breakthrough in the development of an HF multiband vertical antenna that has been specifically designed for use with a tuner and amplifier. This antenna is perfect for HAMS that need a quick reliable solution for local 2 meter communication. 8 and 7. Various methods exist for matching antenna impedance to the transmission line’s characteristic impedance (e. When I ran an HW101 mobile, I used a Hustler antenna with the triband attachment. 8-2. Attic Antennas for Ham Radio. In addition, most mobile antennas require replacing resonators, or at least plugging jumpers, in order to change bands. Amateur Mobile Antennas The Shark single band antenna represent an economical solution to mobile HF operation. Best to have 2 antennas to compare signals! Devote at least a year to test antenna before giving up on an antenna. When unpowered, the 1:4 unun connects directly to the antenna preserving the original 60-10 meter compromise SWR. Low Band Antennas at W3LPL High Performance Transmitting and Receiving Antennas for 160, 80 and 40 meter Very easy and low cost to homebrew your own antennaVertical Dipole Portable Base Mobile Alpha Magnetic Loop antennasAmateur Radio, Antenna Theory, Homebrew Antennas, Hidden and Stealth Antennas, CC&R's, and Antenna restriction. , tune) by simply adjusting the length of the tubular elements. Save 40 meter mobile antenna to get e-mail alerts and updates on your eBay Feed. com article by John Reisenauer (KL7JR) titled "Simple and Inexpensive Dipole and V Antenna Mount". Apartment loop antenna for HF. For a 2 meter base, I have been using one of the 5 watt handhelds attached to the homebrew 2 meter twin-lead J-Pole I built a while back. The natural capacity between the turns will tune the antenna to (about) 4. Wanted to get back on 75 meter mobile. Works great and gives several extra bands besides the 80/40/20/10 meters using Kenwood with autotuner. My K9AY RX Antenna. 3 screws are 1/2" and the other is 1". Construct a compact, 20 meter rotatable dipole antenna of durable weather worthy components supported at a single point obviating the need for multiple supports and multiple support ropes crossing the yard. Relay controlled so at the flip of a switch I could be using that vertical for a 1/2 wl on 40 or a 1/4 wl vert on 80. +12V or -12V resonates the antenna on 80- or 160-meters respectively. ARRL Antenna Handbook 1990-2007. ANT 1 is connected to the 10 meter dipole ANT 2 is connected to the 20 meter dipole ANT 3 is connected to the 40 meter dipole ANT 4 is connected to the 80 meter dipole. Homebrew 4 band vertical. Shipping at least twice weekly, thanks. Your rig runs more efficiently, and puts out more power with less heat. To calculate the length of wire needed for a 11 meter loop antenna, we must use a formula. 78 -1. 09/09/2006 · I am looking for some input on what you think is a good dipole for 40 and 80 meters. "A High Efficiency Extended Length Mobile Antenna" See more Ham Radio Antennas, Homebrew. Serious 160 M ops have a listening antenna focused on Europe: 45-60 Degrees. 5 to 7. But I'd really like to streamline my operation and the > Outbacker antenna seems like the best antenna for me. Listening antennas for Asia and Pacific Needed! the 40 meter position, as shown in Figure 1. If you are one of the Amateur Radio, Antenna Theory, Homebrew Antennas, Hidden and Stealth Antennas, CC&R's, and Antenna restriction. Improve Antenna 80 and 160 meter, by K1KI One of my 2008 antenna projects was a square spiral loop antenna for the 80 meter band. The 88' EDZ was homebrewed and the Butternut is a commercial antenna, of course. For years there have been many home brew projects to construct similar antennas but no high quality versions have been commercially available until now. Po In my case, I have two antennas - an 88' Extended Double Zepp (EDZ) wire antenna and a Butternut HF9V antenna. CHECK 80 mW HF mobile operation, especially on 160, 80 or 40 Meters is antenna efficiency. homebrew 80 meter mobile antenna Close enough for "government work"! I decided to give it a try on 7232 kHz. A better reason to consider this antenna is for reasonable 80-20 meter use and as a practical thing to try for the 160 meter band. , balun transformer, gamma match) Relative ½ wl antenna size • 10 meters = 17. 5 to 28 MHz. However, when using it with an End-Fed antenna it is wired as a (so-called) "unun" transformer (unbalanced to unbalanced). Super Antenna SW1 SuperWhip is a ruggedized Portable/Mobile antenna whip stinger made of super flexible titanium by Super Antenna Systems Corp. Multiband Amateur HF Base Station Antenna: 6m-10m-12m-15m-17m-20m-30m WINDCAMP Gipsy 7-30MHz HF Horizontal Dipole Antenna Ant for Ham Radio Waterproof Balun by Windcamp A Low-Profile 10-Meter Antenna Put this simple whip antenna on your roof and have fun! By Brian Smithson, N8WRL 1670 Edgewood Lane Milford, Ml 48381 E-mail: smithson@acm. g. Particularly used in a city or area where the repeater sites are generally higher than the mobile station due to the pattern having an uptilt. This didn't work. BALCONY ANTENNA by Harry Lythall - SM0VPO. This means that a 100W radio will only radiate . Several late-night contacts have been made over distances exceeding 3000 miles on 80 meters. Ham Radio Homebrew HF Mobile Antenna Part 2 75 Meter Upgrade Success. 80 meter loop frequency plot The table above makes it fairly easy to choose the feedpoint impedance for the 80 meter loop antenna. I swore right then and there never to purchase a wire antenna. Hello, Im new to Ham radio and was wondering what the best antenna for 80 meters would be. Effective HF Mobile Antennas Keith WB2VUO One of the problems with HF mobile operation, especially on 160, 80 or 40 Meters is antenna efficiency. Use flowers to disguise your antenna! KB0YKI ANTENNA DESIGN Various antenna types-off site WONDER BAR ANTENNA 10 AND 12 METER WIRE BEAM! (Experimental) LIMITED SPACE 160/80 METER (Experimental) THE JOYSTICK ANTENNA (Experimental Multiband HF Vertical for Restricted Space) WA3WZR MODERN JOYSTICK. This antenna measurement can be used for either a vertical antenna for 17 meters or a horizontal antenna for 17 meters. 3%. Antennae for the Low Bands. The metal whip would serve as a "top hat" for the helix. Real ground was modeled, ith a dielectric strength of 1. If you can get about the same efficiency (5% or less, at absolute best), figure you done real good! A dipole or other horizontally polarized antenna will typically be easier to deal with on 160 meters. This makes the determining the angle moot, and simplifies installation