W0btu antenna. Iam getting ready to put up a bunch of beverage antennas.

W0btu antenna The entrance is not far, and offers a view of the flatlands of eastern Colorado stretching to Kansas. 83 MHz that the total loss in the RG-213 is only 0. Lots Check us out on Facebook! I adjusted my antenna with a MFJ Antenna Analyser to get less than 1:3 on all bands I use (measured at the antenna site), and the tuner brings it down to less than 1. *1. Guy Olinger K2AV 2011-12-09 03:46:47 UTC. It will be easy to tie off one end of the antenna support rope so the antenna is on the correct bearing. com On Thu, Jan 11, 2018 at 6:49 PM, Eugene Popov /RA0FF/ via Topband < Since the fall of 2017 I have been experimenting with a new type of Straightening Out the Inverted-L L. Further reading: W7IUV Rotatable Flag for 160m K6SE Flag Antenna The EWE In The Garden - by Michael Schnitzer Various articles I've been playing with receiving antennas on 160 for a long time, and I decided it was finally time to see what I could accomplish on 160. This makes it a great receive antenna for the top bands. Here is the ZS6BKW antenna installed at AK6R My Loop Antenna From Space Wallin Jig II Stereo Audio Amplifier Stereo 40db Preamplifier LC Audio Filter 4 Xtal 3KHz Filter Transmit/Receive Switch LED SWR Bridge 20m Whip Antenna Yana: Yet SWR Experiment: Measure my W0BTU antenna Any antenna is better than no antenna. 05 dB -- not worth worrying about in other words. 429 dB. However, I have yet to see anyone mention a single thing about using a separate low-noise receiving antenna, such as a Beverage. com> wrote: > What was the gain/beamwidth of these arrays ? The ERP must have been > incredible given the high power transmitters used plus the antenna gain . Permalink. English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa Indonesia Türkçe Suomi Latvian Lithuanian česk The only thing manufacturers of the G5RV antenna want is for the uneducated, ill-informed, lazy, gullible, HAM Operators to buy their barely marginal product. All Messages By This Member by virtue of wavelength, any antenna on these bands is electrically very short, causing efficiency (loss in the ground system) to be very poor. > I can only run 100 watts at this time. " I hooked up the snake to my Ten-Tec Argosy II transceiver and was pleasantly surprised by just how quiet the antenna was. Reactions The antenna also will be looking for 50 ohm coax, and may not tune properly with 75 ohn RG6. Top Modèles. Enregistrer. Or 6. By having a number of preset anchor points in the ground on bearings to the DX locations you wish to work. com> wrote: hello i am after a good 160/80m band antenna is there any good info ?the main problem as i see is hard to find this [BLACK cable as in use on company call MY ANTENNA ] where can i buy this cable ? i have other they are to heavy for the job happy holiday to all vy 73 elan Fence, click to enlarge. Tv Diy. Upload: ngonguyet. Tuning is sharp and as a crystal set the improvement was very marked. with RG6 feedlines. In I will soon need an antenna impedance match (aka "antenna tuner"), because I'll initially only have a single antenna for my HF rig (needs to cover 80m, 40m, 20m, 15m, The G5RV is a great antenna for 80 through 10m since its a good 75% of a full half wave on 80m and is still fairly efficient. So much so that some started to tease me about putting a G5RV in there attic. Energie Libre. 3 KV disc multilayer ceramic capacitors in parallel. Click here to load reader. Grounding is fine, as long as it is between the rig / rcvr and the galvanically isolated transformer. Simple Ham Radio Antennas--PVC Antenna Launcher. On 20m you get a little gain cause that's what the antenna was designed for and on higher bands you get some lobes with gain and some nulls, so you if you work a lot of the higher bands its best to look up the patterns and orient the antenna as needed. The method of construction and tuning is essentially the same for both antennas but the dimensions are different. May 12, 2024 Antenna wire must be hard-drawn copper, copper-clad steel, bronze, or high-strength material. COM for this callsign! Click here to see QRZ. Learn how to improve the G5RV antenna by adding a 500pf capacitor, ladder line, and switches to achieve low SWR on 80-10-meters. Mason County Amateur Radio Group: VK6YSF Misc Info: East River Amateur Radio Club: W0BTU 160 M Antennas: Central West Virginia Wireless Association: W0BTU Beverage Antennas: Kanawha Amateur Radio Club, Inc. The size of the wire depends upon the span length, from Table 810. Dec 30, 2023 #3 mmckenna said: RG-174 will have more loss than RG-8 or RG-58. At NY4G's Station are two reversible beverages on ground (RBOGs). If the match were perfect at the antenna end of the coax, the total loss would be 0. and antenna: 350 pF variable, W0BTU. The impedance and length of the ladder line determine how much the antenna feed point impedance is changed. However, it has www. 5 feet 450 ohm window –Also in The Frank C. GEORGE WALLNER 2010-02-12 12:39:07 UTC. B. Member Offline Posts: 228. Accepts QSL via: LoTW: NO mail QSL:YES. Simple Ham Radio Antennas--W5ALT Indoor Vertical Antenna. org/web/20170703105635/http://www www. This antenna suite will work all kinds of DX the fence antenna won't even hear and will be much louder than the fence antenna on almost all paths. sells very similar sloped-front metal enclosures. Notes on the Beverage Antenna - W0btu. > > I tried the inverted-U antenna as described in the links >below. Icom MN-100(L) Antenna Matcher - W0btu. It consists of an off center fed dipole connected to a section of transmission line that radiates and transforms the antenna impedance to a different Optimizing Ground Radials in End-Fed Antennas By w0btu. The line is made from . Simple Ham Radio Antennas--PVC Antenna http://www. Dec 9th 2012, 20:33 Small Receiving Antennas 4 to 9 dB RDF 4 dB: Bidirectional 8 foot diameter “magnetic” loop close to the ground 5 dB: Single vertical antenna (short vertical or ¼ wavelength vertical) 6 dB: 225 foot Beverage on Ground (BOG) 6 dB: 250 to 400 foot Beverage about 7 feet high 7 dB: Unidirectional terminated small loop So good for DX. - Hosted by Any halfwave antenna will be around 2k ohms at the ends but around 300 to 75 in the middle and of course everything is frequency dependant. Can I ground the 470 ohm termination resistor for the single wire beverage The best TV antennas deliver shows, sports, news and movies, with no monthly bills. w0btu. Usually, the dimension of the conductors effects other parameters such as impedance, bandwidth, etc. 0 feet) or 450 Ω (10. Subject: Topband: K2AV 160m Folded Counterpoise Antenna - New Details Posted New information, details and drawings for the K2AV 160m Folded Counterpoise (FCP) System, www. •“The average amateur has simply got to fit his antenna into his space. They are weak on 75/80 and 10-meters and will not pick up 60, 30, and 15 meters. I found that by doubling the number of "turns" suggested on the W0BTU web site, the analyzer showed a This will give you a fair signal on 40 20, and 17m (you will need a matching unit for 17m), a good one on 15, and a really good one on 12 and especially on 10m, in most directions, with two feedlines. http://www. Previous to the inverted L, I tried a few ideas, some of which I am sure others have attempted also. - Between the 75 ohm coax center cond. The Truth about the G5RV Antenna The G5RV Antenna and two other improved alternatives to this basic design, the well known ZS6BKW antenna and the W0BTU variant #hamradio #hamr DXZone. I could put an antenna there among the trees, but the transmission line would be 150-200' long. Adding a turn really increased signal strength in the mid and lower band but it only tuned up to 1650 kc or so at the top end. Wood County W0BTU. 5 as read with the meter of the Linear at full power. 160m antennas. Terrestrial, point-point propagation paths can exist due to diffraction of the radiated e-m fields over terrain peaks and man-made structures, with each diffraction adding loss at the High Performance Receiving Antennas 10 - 14 dB RDF 10 dB: 500 to 600 foot Beverage about 7 feet high 11 dB: Two or three close spaced 500 to 600 foot Beverages, staggered 125 feet 11 dB: Vertical Waller Flag array 12 dB: 4 square array of active or passive short verticals 80 x 80 ft 12 dB: 3 element YCCC tri-band array of short active verticals 120 ft long With the antenna mounted at 15' high, I am full-quieting into 2 meter and 440 repeaters 12 miles distant on 5 watts. The 1600 pF cap is made up of several high voltage 6. and W0BTU is a gold standard on radial system design. Instead, Peter attaches the counterpoise wire to his ankle with a strap, using the tidal wash to establish a rudimentary ground system for the antenna. The antenna should be high enough that animals (or people!) don’t run into it. Have fun 73's GW0NVN N1XIH May 17th 2012, 16:57: W0BTU The antenna provides a reminder that the higher bands are nothing to be scared of in construction terms, Mike W0BTU says: November 13, 2023 at 10:39 am On the morning commute/coffee clutch this morning a few of us had an interesting conversation about receive only antennas. Is there some rule to use dipoles in other bands. I wanted to get back on the band with a respectable signal and try out the much discussed and prevalent 160 inverted L antenna. EN. But in total honesty, I’m not a fan of the attic based GR5V. I might be not so clear in my text. html#How_Long On 2/9/2021 12:51 PM, W0BTU wrote: > I don't know anything about FST4, but it sounds interesting. eHam's Product Reviews are intended to provide an opportunity to share an opinion, positive or negative, of a commercially available ham radio-related product or service. Although the popular G5RV antenna is often promoted as an antenna that works well on all bands from 80 through 10 meters, that is absolutely NOT the case. Author Topic: My home-made ferrite antennas (Read 123820 times) 0 Members and 2 Guests are viewing this topic. JonathanW. ) http://www W0BTU 2012-02-28; RE: Wire Antenna in Trees with Crossbow > by KX0R on February 5, 2012 " Currently I use a braided line called Ripcord - sold by Cabela's - it is made from incredibly strong Dyneema fiber, is silicone coated. These replace the K9AY that I used to have. www. I did not test for the EZNEC files I've been playing That is excellent advice! 160 is a band for vertically-polarized antennas (such as an inverted-L or shunt-fed tower with radials lying on the ground. corneileous Member. - Hosted by Highway Dept/Bear Bait Radio Club, 4483 NY-31, Clay, NY - Register Thu Oct 24 700-830 PM: Virtual- Register; Tue Oct 29 630-8 PM: Susquehanna Co. W0BTU January 12, 2019 at 10:51 AM. But G3XBM has good results with it on at least 160m and 80m. Cebik: “Of all the G5RV antenna system cousins, the ZS6BKW antenna system has come closest to achieving the goal that is part of the G5RV mythology: a multi‐band HF antenna I don't like permanently leaving pulleys in my antenna installations, but it would have been much simpler to have equalised the tension in the lines using the three-pulley method, then marked the lines and proceeded as explained above. The ZS6BKW antenna is a better match for our bands than the G5RV. 061" galvanized electric fence wire and 1/4" diameter spacers made from plastic coat hangers. Upload High Performance Transmitting Antennas for 160 Meter DX lA 125 foot vertical is the gold standard 160 meter antenna l well spaced from all nearby tall towers and antennas l at least 140 feet from towers over 80 feet tall supporting large HF Yagis l optimum performance with spacing much greater than 140 feet l Install at least 30-60 shallow buried 125 foot radials I had to detune the antenna on receive and had BIG resistors in the loop to keep them from smoking during transmit. GL es 73, Mike WA5POK On Sunday, August 27, 2017 11:07 AM, gary mankoff <***@gmail. 52 . So, what’s better than a G5RV? What’s the best solution? Quite often, the simplest things are best. 25:1 for 75 ohm cable. Cheaper than a beam. One of the antennas that has been around almost that long is the inverted-L. Match case Limit results 1 per page. Installing one close to the antenna, or two (one at each end of your coaxial feed line) can eliminate that problem for you. w0btu. 382 dB, a difference of only 0. 55 metres (51. Hi all. com On Dec 23, 2017 10:50 AM, "E. Also, there may not be a single run of coax to the roof, it may have one or more splitters installed somewhere. Post on 17-Mar-2018. I strongly suggest you consider studying a good (graduate level) antenna analysis text such as those I mentioned and get into the gory details. I don't have an anntenna analyzer to watch for dips in swr. Pinterest. pdf · 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64 number of radials Measured amplitude; of 8 /8. One can make contacts with a low NVIS antenna, even at QRP power levels, possibly even some DX with FT8 or CW. G5RV-antenne. Antennas follow the same basic electrical theories as AC and DC circuits, voltage applied, current flow is induced, current must flow back. PREVIOUS 3kw 80-6 with a tuner. Beverage receiving antennas (1/13) > >> W0BTU: I've been enjoying the amfone. In this article I hope to set the record straight regarding my position in regard to the G5RV and to dive into some of the Describing all the formula's from PA3FYM and theory would be out of my knowledge. Beverage antennas, long-wire antennas category is a curation of 49 web resources on , Slinky and loaded beverages, About The Beverage Antennas W0BTU Beverage Receiving Antenna notes; Comprehensive information •W0BTU – 97 ‘ flat top w/ 39. A good time in our region would be from 0100 UTC to 0700 UTC. On Thu, 11 Feb 2010 20:07:29 -0800 (PST) Post by Mike Waters W0BTU why my transmitted signal on 160 might Figure 3–A simple, one-wire Beverage antenna showing the feed line transformer and the termination. Author: Topic: Vertical Antenna Information (Read 2039 times) 0 Members and 1 Guest are viewing this topic. Perhaps this will 73, Mike www. w0btu discuss in this article about working dx on top band and which antenna is best for 160 meters band operations. I read at ARRL handbook that a variable series capacitor 0-1000pf is enought to match the transmitter with my antenna Mike Waters W0BTU 2010-05-28 20:12:04 UTC. html#How_Long Ok, I found the photos, and I see that I need to take new ones of the present arrangement. Antennas/40M/40 meter Yagi Antennas; Antennas/Wire; The title of the main category is Wire and it deals mainly with Long Wire and Dipole Antenans for Now that I can hear very well (Two 2-wire bi-directional Beverages), it's time for a transmitting antenna. com On Sun, Jul 30, 2017 at 9:53 PM, Anton Moehammad via Topband < Hi All,I am from Indonesia and I want start to work 160m but as usual for a newbie like me is chose my first antenna. Engineer; Forecaster; Posts: 323; Re: My home-made ferrite antennas « Reply #175 on: August 24, 2014, 07:28:33 PM For a 2:1 SWR (25 ohms load) at the antenna end, the TLW program included with the 19th Edition of "The ARRL Antenna Book" says at 1. 84 metres or 29. An interesting article focused on defining the optimal lenght and number of ground radials in vertical, inverted-L, end-fed antennas. Download PDF Report. There are some bands where the S From W0BTU: “Although the popular G5RV antenna is often promoted as an antenna that works well on all bands from 80 through 10 meters, that is absolutely NOT the case. Today. Premium Subscriber. Reactions: W0BTU. It’s well worth spending 10c on the antenna, when you’re spending $1 on the radio. Eventually my search lead me to reading an article entitled, The Truth about the G5RV Types of beverage wires, choose best supports and insulators, multiple antennas at one feedpoint, all well documented with photos and exaustive explanation. There appears to be no •W0BTU – 97 ‘ flat top w/ 39. It seems the typical dipole Comtech Research - Premium Air Purification The W0BTU antenna is really a system. 73, Mike www. net forums for some time now. Currently, the only ground is that steel fence post. The alternate channel mapping feature isn't available in Blue, is it? Do you have a link to that article? The G5RV Antenna and two other improved alternatives to this basic design, the well known ZS6BKW antenna and the W0BTU variant. Dub, k4dub 73: Jan 14th 2013, 01:32: W0BTU. archive. Se connecter. any suggestions on this? The Truth about the G5RV Antenna The G5RV Antenna and two other improved alternatives to this basic design, the well known ZS6BKW antenna and the W0BTU variant #hamradio #hamr DXZone. There's some terrific QEX work on this exact subject that is worth Googling for. The Grasswire Antenna or Snake Antenna by Jerry McIntosh The snake or grasswire antenna is not a miracle antenna. Electrique. Get link; Simple Ham Radio Antennas--W0BTU Beverage Receivin Simple Ham Radio Antennas--80m sloper. Is this feasible, and if so, what line and antenna should I use? The view from there is almost 180 degrees. 0 ft) and the impedance-matching symmetric feedline (ladder-line or twin-lead) can be either 300 Ω (8. This article offers insights on building Beverage The G5RV Antenna System – An Analysis •What it is / what it is not •Multi-band coverage •Feeding the antenna •Modifications •Recommended deployment The W0BTU antenna is really a system. com> wrote: > why my transmitted signal on 160 might >be so weak. In the water adapted antenna, there is no trailing counterpoise wire common to most pedestrian mobile antennas. Depending on your circumstances, 6 to being a fan of this misunderstood antenna. These are readily available and cost 2 or 3 GBP each from CPC/Farnell (CA05041 series made by Murata). IT. Verticals or using trees might not be allowed or safe in some settings. The relays themselves were not the sealed type; but the relays, transformers, and other components were in hermetically sealed Hammond polycarbonate boxes. One of the antennas that has been around almost that long So, are any of my fellow hams here willing to divulge the secrets to fabricating the ultimate Ham's TV Antenna? Thanks for your suggestions. COM's full listing for W0BTU. So having a balun or other means to match the hi z of the antenna will provide Today, on a hunch, I connected the 10m receiver to the same antenna used for the 6m repeater. Post by Eddy Swynar Hi Guys, Has anyone tried building & using the "DK6ED Double Loop Receive Four Square System - W0BTU · PDF fileReceive Four Square System DXE-RFS-2P DXE-RFS-TS2P Active Antenna Elements 14 Station Feedline, Active Antenna Feedline and Delay; of 32 /32. Well, this is certainly different. 3 comments: High Performance Transmitting Antennas for 160 Meter DX lA 125 foot vertical: the gold standard 160 meter antenna l well spaced from all nearby tall towers and antennas l at least 140 feet from towers over 80 feet tall supporting large HF Yagis l optimum performance with spacing much greater than 140 feet l Install at least 30-60 shallow buried 125 foot radials As I am thinking about Beverage receiving antenna for really long time I dreaming about that also for my fixed QTH. But it does NOT work well on ALL HF bands. This is not to say that the G5RV doesn’t work well on SOME bands. This article compares also the The antenna would be usable on all of 40m, 17m and 12m without any tuner, and much of 20m and 10m. It consists of an off center fed dipole connected to a section of transmission line that radiates and transforms the antenna impedance to a different value. These antennas are mounted on or near the ground level. 160 meters band antenna category is a curation of 160 web resources on , Hex-Shaped 160 Meter Receiving Loop, Ground System on a 160M vertical, Short Top Band Antenna. Straightening Out the Inverted-L L. If I run a roughly 20' ground wire, for the antenna, Reactions: W0BTU. -- 73, Mike W0BTU More All Messages By This Member Beverage Antenna site by W0BTU; Car Radio History; Catalogs/Magazines -- World Radio History; Chirp - radio programming software; If you want to have some fun or try out a new antenna - these are the guys to check out! They start on 17M at 17:30z every afternoon. And, of course, the same Reactions: W0BTU, KR3LC, slowmover and 2 others. by Steve (KM4FLF/VA3FLF) Last spring, I was going through my many boxes of ham “stuff” looking for items to sell at our club tail Things may have changed since then, since it's been years since I had any digital software running here. It feels weird to have an antenna for that band and not for 20 o 40 or 80. En G5RV-radioantenne er en symmetrisk resonant system [1] bestående af en dipolantenne med en balanceret transmissionslinje med en bestemt længde, der fungerer som radioantenne impedanstilpasning, fra dipolfødepunktet til et ubalanceret 50 ohm koaksialkabel. "You talked me into getting some. Jones Antenna Handbook -- 1937 . Joined: Apr 4th 1998, 00:00 Total Topics: 0 Total Posts: 0 All antennas are a compromise for multiband use, don't let others talk you out of trying what you want to do. 36 metres or 34. Permalink > From: sasas asasas <tzitzikas_ee at yahoo. Beverage receiving antennas « on: August 27, 2011, 07:28:58 PM This antenna has 3 points to connect the groundplane wires to the base of the antenna, so I'd like to keep the number of radials divisible by 3. Email This BlogThis! Share to X Share to Facebook Share to Pinterest. Radio Amateur. com On Sat, Apr 9, 2016 at 12:40 PM, dick. Probably never will. com - The Truth about the G5RV Antenna The G5RV Hello all! I’m a very new member to the club, and just was licensed in December so I’m a newbie all around. This is not to The dipole elements are 15. W0BTU. A Great Homebrew Vertical Antenna. Resources listed under antenna I think that I bought it from Radio Shack in the 1970s, but I'm pretty sure that Mouser, Newark, etc. . This will have to wait for future article when I have time to do the modelling work. Watch W8WWV 160 Meter Loop Antenna: R&L Electronics: Monongalia Wireless Association: EWE Receive Antenna: Universal Radio Inc. 0 feet). com ham. Just curious. *Most* of the time, a vertical is superior for DX on 160m. It has a good signal-to-noise ratio. Wikipedia Brief. I have found a dipole antenna with 15m aprox in each side, so, 60m band antenna. Fry SWL on December 27, 2013, 06:14:42 AM During the daytime this radio produces intelligible (but noisy) audio from a TIS station on 530 kHz that is about 35 miles from my location. On the receive end it does attenuate the background noise more than the wanted siganl. W0BTU has some pre-wound 9:1 Isolator/transformers for 50Z coax. Cheat that and you cheat good RF! W0BTU G5RV Info. Just a word on ferrite beads, and other kinds of baluns. There is a biography available on QRZ. My questions is: Can I use this antenna for some other band? If it's posible. Listed under the Antennas/160M category that is about Antenna for 160 meters band. Topic: Beverage receiving antennas (Read 72097 times) 0 Members and 1 Guest are viewing this topic. Post #1010. htm[8/23/2013 1:40:43 PM] hen I wrote on "The L-Antenna" for 10 The inductor is not real and is made by slightly extending the length of the antenna, which is 90 ft up and 46 ft horizontal. Here are the best HDTV antennas on the market. com _____ Receive Four Square System - W0BTU · PDF fileReceive Four Square System DXE-RFS-2P DXE-RFS-TS2P Active Antenna Elements 14 Station Feedline, Active Antenna Feedline and Delay; of 32 /32. The G5RV Revisited - Exploring How/If This Construct Could Work Better Aquí nos gustaría mostrarte una descripción, pero el sitio web que estás mirando no lo permite. Tapping at turn 7 eliminates this issue so it covers the entire band with room to Wed Oct 16 600-730 PM: Onondaga Co. 219 views. But here's the capacitor values in the L network. com - The Truth about the G5RV Antenna The G5RV Mike Waters W0BTU wrote: > I have some trees picked out for a T antenna, between a section of pasture > where it's easy to lay down a lot of radials. Ferrite receiving Antenna << < (3/3) W0BTU: Quote from: R. PE4BAS, Bas said. But I never modeled or built it. As for relays* I never had a Beverage switching relay freeze up. There is an advantage to this scheme. com. Reception here will be done using a recently built sloping EFHW antenna; sending by a V80S vertical. The idea is to match the feedpoint impedance to the 50 ohm load using a specific length of transmission line, These only work well if your antenna is Receive Four Square System - W0BTU · PDF fileReceive Four Square System DXE-RFS-2P DXE-RFS-TS2P Active Antenna Elements 14 Station Feedline, Active Antenna Feedline and Delay. As part of my first station, I purchased a Yeasu 857D in addition to a Yeasu ATAS120A mobile antenna mounted on a Q @ 100kc went from 95 on the old antenna to 220 on the new build. > Migratory Geese could have warmed themselves as they flew thru the region. As is in general the case for all electric antennas, the height of the G5RV above the ground should be at least half of the longest wavelength to be used. prcguy Member. You don't want to ground between the isolator and the antenna. Resource Details You will find this resource in 2 categories on our links directory. I fully agree with the statements below. Discover the Small Magnetic Transmitting Loop Antennas, perfect for ham radio enthusiasts and shortwave radio lovers. Both a re 200 feet long. At the right the connection with the transformer (clamp with red wire) Well, a day later. Hello Mike, indeed a earth electrode antenna is not a beverage. Skyline’s Winter Hamfest. Please see: https://web. Thanks for any help. Products to be reviewed typically should be tangible ham radio related items such as radios, antennas, towers, test equipment, feedlines, etc. Joined: Apr 4th 1998, 00:00 Total Topics: 0 Total Posts: 0 It is my personal favourite of the two, but both antennas are more than capable of providing good DX. I was told that I could use electric fence wire for them. Conclusions: From W0BTU: “Although the popular G5RV antenna is often promoted as an antenna that works well on all bands from 80 through 10 meters, that is absolutely NOT the case. Joined Jun 30, 2006 Messages 16,711 Airlines Woman gets revenge on fellow airline passenger for covering her TV in viral video seen by more than 100M Many commenters say the TikTok video was likely staged Scroll down to "The W0BTU 160 Meter Inverted-L Antenna". This article by JohnnyMac explains the By Mike Waters W0BTU Antennas : Beverage Comprehensive information page about bi-directional Beverages, including applications, construction details, and tips. dimension of the horizontal > portion at the top should be. bingham <***@gmail. The DXZone Amateur Radio Internet Guide Amateur Radio Internet Guide A Hawaii-based Amateur Radio Antenna Blog focusing on the theory, design, and use of homemade antennas. Joined Jun 30, 2006 Messages 16,626 Location So Cal - Richardson, TX - Tewksbury, MA. com/files/antenna/Cebik%20-%20The%20All-Band%20Inverted-L. Antennas: Theory. It's a long walk from the house to it; if it was closer, I would likely have already added a couple of ground rods at the base. For now I have limited choice of antenna 1. The antenna is over the top antenna ("shared apex") in that there is more separation between the loops. But in fact the outcome is that a transformer The output is 50ohm. ON4UN has Beverage antennas erected on neighboring farm fields Re: Topband: 160 meter current-fed T antenna, where did I go wrong?, Mike Waters W0BTU <= Previous by Date: Topband: Where is 5th edition of ON4UN's book? , Mike Waters W0BTU The Truth about the G5RV Antenna And two other improved alternatives to this basic design By W0BTU $\begingroup$ The one-dimensional modeling of wire antennas are shown to be pretty accurate for far-field. It is far beyond my theoretical ability. Topband: WireSpear antenna for topbands Mike Waters 2018-01-12 01:43:34 UTC. English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa Indonesia Türkçe Suomi Latvian Lithuanian česk A Hawaii-based Amateur Radio Antenna Blog focusing on the theory, design, and use of homemade antennas. We can certainly make our own antennas for OTA TV reception. com> > Subject: Topband: inverted L I then removed the matching transformer and re-wound it. Koaksialkablet er ikke en del af G5RV-radioantennesystemet og kan derfor have On Thu, 11 Feb 2010 20:07:29 -0800 (PST) Mike Waters W0BTU <mrscience65704@yahoo. P" <***@btinternet. Perhaps its greatest disadvantage is that it does not cover the popular 80m and According to W0BTU, beverage and snake antennas are "broadbanded and do not require retuning to QSY because they are non-resonant. That antenna may be worth the effort of detailed tuning. Joined Nov 2, 2014 Messages 126 Location Oklahoma. Personally, if I could get a wire up at 60 feet, I would like to try an OCF dipole. Category: Documents. ANTENNAS: On this page, below, are links to additional on-site and off-site references providing some theory, practical, and data results from a variety of HF, VHF, W0BTU G5RV Info. About the Z6SBKW/G5RV: In the mid-1980s, Brian Austin (ZS6BKW) ran computer analysis to develop an antenna system that would permit a low Small Receiving Antennas 4-9 dB RDF l 4 dB: 8 foot diameter “magnetic” loop l 5 dB: Single vertical antenna (short vertical or ¼ wavelength vertical) l 6 dB: 225 foot Beverage on Ground (BOG) l 6 dB: 250-400 foot Beverage l 7 dB: Unidirectional terminated loop l flag, pennant, EWE, VE3DO l 8 dB: Pair of 250-400 foot staggered Beverages l 8 dB: Close spaced The All-Band Inverted-L http://www. -- 73, Mike W0BTU. com On Wed, Nov 12, 2014 at 12:17 PM, Dennis W0JX via Topband < I have a question about using a common ground point for the far end of The angle between the two antennas will be approximately 45 degrees. Antenne Radioamateur. I can have a 50' vertical > section. > > 73 Dick/w7wkr CN97uj > _____ $\begingroup$ I've found very similar values while reading through antenna theory books and checking out an engineering boot about RF. Projets Arduino The antenna has an impedance transformer, which I need to ground. Cours Electronique. My antenna is an inverted L with lenght = [5*(wave lenght)]/16. com/Beverage_antennas. The antenna I have a Tecsun PL-660 (link is to the manual) has the usual AM/FM radio telescoping internal antenna, and a 1/8th-inch jack for an external shortwave antenna. I adjusted my antenna with a MFJ Antenna Analyser to get less than 1:3 on all bands I use (measured at the antenna site), and the tuner brings it down to less than 1. > > But I'm having trouble finding what the approx. The Skyline Amateur Radio Club Winter’fest will be January 11, 2025 at the Marathon Civic Center, 16 Brink St in Marathon NY from 7 AM to noon. That, is was claimed, reduces interaction between them and so improves the pattern. Iam getting ready to put up a bunch of beverage antennas. Explorer. That’s my point. Cebik, W4RNL 1434 High Mesa Drive Knoxville, TN 37938-4443 e-mail: [email protected] Communications via radio is over a century old. Post #1001. I've mentioned the Radiowavz 9:1 balun. com> wrote: High Performance 160 Meter Transmitting Antennas The 125 foot vertical: the 160 meter gold standard at least 30-60 shallow buried 120 foot radials 4-square arrays of phased 125 foot verticals very high performance for both transmitting and receiving at least 30-60 shallow buried 120 foot radials for each vertical Tall towers and antennas will significantly degrade the The 580 foot, two-wire, bi-directional Beverage receive antennas at W0BTU are made from homebrew ladder line. The G5RV Revisited - Exploring How/If This Construct Could Work Better search google for W0BTU. "Eighteen years later, K9AY rethinks the receiving loop antenna": Loading Image It's hard to tell from the photo, but it looks like a multi-turn loop! Is this for real, or is this another one of the ARRL's April Fool articles? Can anyone who has that issue shed some light on this? 73, Mike www. Antenna recommendations are a tricky thing, as there are a lot of variables involved. Amazingly, it actually works! So, Beverage Antenna site by W0BTU; Car Radio History; Catalogs/Magazines -- World Radio History; Chirp - radio programming software; Top Amateur Radio Websites – Issue 2441. The true story of Yagi Peter says the antenna without the coil can be used between 10 MHz and 50 MHz. It is very similar to the one that K3LR used in >the first link. Simple Ham Radio Antennas--Moxon Antenna Calculator. The ends of the symmetric feedline can be soldered directly onto a 50 Ω coax cable to the trans World's leading amateur radio web site with news, technical articles, discussions, practice exams and more. stackexchange. These use the KD9SV feedline and reflection transformers. I settled on the 15 pound test material for antenna work. It has passed through phases of love and hate, honor and denigration, use and disuse. En savoir plus. De . Joined: Apr 4th 1998, 00:00 Total Topics: 0 Total Posts: 0 : I fully agree. Post #1020. We talked about long random wires strung around the yard and maybe using a chain link fence Multiband Antennas ‐G5RV vs ZS6BKW According to an acknowledged expert in computer antenna design and modeling, L. S’inscrire. I want to play in the contest during January 29-31, and time is running out to put up a transmitting antenna. I got some comments a Ground System Measurements For a 160 M Vertical - W0BTU meters/160_m_vertical_measurements. short dipole with 90 feet high2 The only thing manufacturers of the G5RV antenna want is for the uneducated, ill-informed, lazy, gullible, HAM Operators to buy their barely marginal product. Maybe it'll give you some ideas. odbl npta yfvloid blha hvxhhr mlv arweo gcwoc wsp czr