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The traps are at the ends of 24. Sotabeams Band Hopper Multi-band Portable Dipole Antenna $120 Value Sotabeams Tactical 7000hds compact 23-ft heavy-duty telescopic mast $106 Value Original packaging not available but gear will be properly packed and shipped to CONUS only via USPS. I ended in the PE1ITR WSPR challenge list between place 26 and 12 I believe and with approx 70-90 unique stations every day. Well…I would have quick band changing: The trapped dipole is the way to go! Searching for antenna traps was an easy one: Sotabeams pico traps! When they arrived it’s clear that they deliver. 314 dB. Downloads and more information about WSPR program and the MEPT_JT mode, as well as other modes by Joe Taylor (K1JT), can be found at the WSJT Home Page. Kevin had a lightweight camping chair and table that made activating very comfortable. This acts like a reserve antenna. ) Another variation of the classic dipole might be something called a linked dipole. I seem to get requests from time to time, to bring up this topic on the blog. Manufacturer and stockist of antennas and accessories for portable amateur radio operators. I was kindly given a SOTABeams linked dipole kit by a friend. Posts about RF Linear amplifier written by Grant McDuling. I’m inspired and have already received my first SOTABeams dipole antenna. Light house, 80m dipole (I can use CHA TD Broadband Terminated Dipole SOTABeams WSPR Testing Methodology March 13, 2017 Julian OH8STN 0. The dipole centre-piece is from SOTABeams and I have fitted a small bracket to it to hole the SMA socket. Here is the Link to his article. Now to work out how I am going to WTB a SOTABeams Tri- Band Hoping to find a multiband linked dipole sotabeams antenna. . Grouse Ridge – W6/NS-195. I pound in the stake in the ground to anchor the mast. uk is a fully trustworthy domain with no visitor reviews. Very light weight: 5 gr each! Later generation of the Windom are more correctly called off-center-fed dipoles (or in abbreviated form, OCF dipole antennas). To that end I made some wire winders (17g) that are less than half the weight of the SOTABeams plastic wire winders (37g). Makes a world of difference. The antenna (without the feedline) comes in at 144g. So, yes, SOTABEAMS does sell the whole antenna constructed, but again, not in the bands that I wanted. + ANTENNA SOTABEAMS (linked dipole). cableone. 51 MHz Q=130. Many would be familiar with the traditional folded dipole made from tubing or wire, and possibly the lightweight version made from 300 ohm ribbon cable. Unrolling the dipole elements is a breeze using the Wirewinders supplied. Some antennas and one of SotaBeams Wirewinders Now got the antennas all up. The first is the end fed antenna with a 9:1 matchbox. Shop HF and VHF Portable Antennas and Accessories for Amateur Radio/Ham Radio with confidence. I have used one of these, and, built myself a Trap dipole verses fan dipole; There is a company in UK called SotaBeams, and they manufacture a kit for 'traps'. So, Lets build a 6 band linked dipole. 6m is an interesting band! 73, James M0JCQ I'm testing the propagation of radio signsls from my homebrew 40m OCF dipole at 8 metres above ground level (26 ft) on 20m (14 MHz), using a SOTABEAMS WSPRlite unit operating at 0. In that case, a resonant 30 meter antenna either a center fed dipole, a ¼ wave vertical with radials or an end fed ½ wavelength wire with a L match should satisfy the antenna requirement. I was going to use links on the dipole sections to select the band, but thought that switches would be an interesting alternative. So the Balun is on the Centerpiece, Now we want to connect the Balun to the Dipole Side. The End Fed Half Wave antenna (EFHW)for SOTA portable operation…from bits and pieces in the Junkbox… Whilst leisurely chasing activators this morning, I also took the opportunity to rummage through my Junkbox to see if I had all the bits and pieces to make an end fed half wave antenna for the 40M band. The values shown (123 PF and 4 pH) for the coaxial-cable traps are for parallel resonance at 7. I wanted it to be light. I'm looking at making my own 80m Dipole but is going to have to be 1/2 or even 1/4 wave for space. (It is hard to be a dipole antenna. With this design changing bands can be done in no time thaks to the traps. 4-foot elements rather than 32-foot elements as in a conventional 80 and 40-meter trap dipole. Arn, KØZK was the powerhouse of the day, Good to work N6GA in CA and AC7A in AZ. I have used one of these, and, built myself a SOTABeams 40/30/20m link dipole, I am able to tune it to 80 meters but it doesn’t work very well there. 00; Save 20 meter dipole to get e-mail alerts and updates on your eBay Feed. sotabeams. Currently I use an End-fed random wire with a 4:1 unun however this does require a tuner to operate. Known as the Magic Band, the six meter band can be mysterious, unpredictable, and downright fun. Sotabeams kindly provided a couple of winders and the dipole arms fit nicely. Loss at 7. I wanted an aerial for portable use, so I thought I’d try a kit from Sotabeams, called a Linked Dipole Kit. A popular way of multibanding antennas is to install parallel tuned circuits, or traps. The antenna is called a Band Hopper II which is designed for use on 40 metres and 20 metres. I was thrilled to watch Mark deploy his SOTABeams dipole in what I thought was a novel and almost guy-less way and then to boot get on 80m and nab locals up and down the UK. With a high efficiency, full-size, half-wave dipole on each band, it's designed to allow you to transmit and receive strong signals anywhere you go. Awkward you say? I would agree! What if I told you can make a 50 ohm version directly from RG-58 or RG-8 / RG-213 cable? I also have a nice selection of mono band wire dipole antennas that I use for Field Day. We encourage chasers to listen out for us on 40m (SSB), 20m (SSB) and VHF 145. 324 dB. I managed 120 activations with the old linked dipole with just one minor repair. This link is listed in our web site directory since Thursday Jun 23 2016, and till today "HF Linked Dipole Antenna Calculator" has been followed for a total of The Buddipole™ - HFportable dipole antenna system, Welcome to the home of the Buddipole™, an hf/vhf portable dipole antenna system which is designed to be modular, versatile, and efficient. com in 2 categories. Planned activations: 28th July – G/LD-020 Dale Head (tentative) 29th July – G/LD-004 Skiddaw 30th July – G/LD-003 Helvelyn 31st July – G/LD-012 High Stile (tentative) I can try two antennas. I can only speak for what has worked well for me. I’m using an 8m fishing pole and will mostly use it guyed. has 5,820 members. I bought this for use with Field Day in mind. Ray Heffer, G4NSJ, commandeered the family shortwave radio, as a kid, to further his interest in shortwave listening and ultimately amateur radio. de SOTABEAMS till Sverige. 3 bande qrp da abbinare all'apparato. We found that Sotabeams. Shortly after, Sotabeams stated that PCB is, in fact, a digital AF Filter. Just about that time, Sotabeams announced a new pcb populated with SMD components without disclose the use. I also made use of bags on the rear bike rack and a backpack. cpe. I drove over to our local disused aerodrome and tried out my new 20m/40m linked dipole from sotabeams together with my nice shinny new sotapole. 8v for the Ramsey QAMP. I use this antenna frequently to work portable A couple of months ago, the SOTABeams Facebook page Posted a link to a new item they had just finished making. There are as many number of solutions to this as there are QRPers who like to go out into the field, and I have only tried a relatively minor few. I used some braided yellow string on the ends. VSWR Bandwidth of 6. The Sotabeam Band-hopper antennas are 100% reliable and easy to use (no ATU needed with these). I know, I cant quite believe it either. The WSPRlite is a specialized test beacon that uses WSPR technology to transmit to a worldwide network of receiving stations. Its been used, abused and not treated very nicely and its never let me down. First day in the New Year that I could get out, high up away from any QRM but very cold. May also run a wire down about 20 feet as a counterpoise. Once we tuned the dipole, I used my Yaesu FT-817ND on the internal battery (2. Sotabeams has a decent Google pagerank and bad results in terms of Yandex topical citation index. In conjunction with the DXplorer website it forms a system useful for testing propagation and antennas Figure I—A W8NX multiband dipole for 80, 40, 20, 15 and 10 meters. Welcome to my Antenna page, here you will find information about the Antenna equipment I am currently using, items that work well and some that have not. Bands 12, 15, 17 M can be obtained in this antenna with capacitors ~3–9. New Kenwood TH-D72 Firmware Update. Hello John, I've been reading some practical 40m propagation research a while ago somewhere. Buddistick – PAC 12 – Superantenna – Chameleon- Ozipole Getting those antennas up makes the difference. The above versions need some sort of matching to enable use at 50 ohms. Pre-owned. SOTABEAMS mission statement. You start with a dipole/inverted vee cut to length for the highest frequency band you wish to use, in my case 20 meters. Hamsticks with a dipole mount can also be used for portable operations eliminating a need for a ground. A week ago, I made a video about my “Deploy-Anywhere” vertical antenna. LDAK-100 Linked Dipole Portable HF Antenna Kit 260kr PPDC-102 PowerPole I carried the mast and an angle iron stake in a gun sling across my back. I quickly ran the numbers that I wanted and generated the plans. 6. This application note describes basic measurement procedures using as example a homebrew coaxial cable trap. Well, this SOTABEAMS linked dipole is my OTHER “go-to” antenna. A Hawaii-based Amateur Radio Antenna Blog focusing on the theory, design, and use of homemade antennas. Reviewing the WSPRlite transmitter by SOTABeams. For issues with this site, email the WSPRNET Admin Team or post to the site forum. The latter, while less intuitive SOTABeams Features Fully adjustable audio band-pass filtering instantly adjustable for voice, data and CW (b/w 50 Hz to 5 kHz) VIDEO State-of-the-art adaptive noise reduction 100 levels plus advanced control functions VIDEO Adaptive tone eliminator get rid of The dipole is “the winner”, but what about at 200mw with an additional WSPRLite? What results could we expect then? We shall see! Don’t forget to check out SOTABeams WSPRLite at www. net Click Here to Email-- Send this Ad to a Friend HyGain TH6DXX Original Lincoln Nebraska manufacture HyGain TH6 antenna. Personally, I use a 53' radiator with a 25' length of coax between the UNUN and the rig, to act as a counterpoise. Only at eHam. 10 September 2018 10 September 2018 by KE6MT. Fig. Thinking about that for a while the thought came to me to try to mount a chassis mount BNC jack right onto the plastic center sotabeams. My EFHW stopped to tune last time! The dipole is also ideal in the place where I don’t have enough room for 41m wire. The test of the new Sotabeams linked dipole will be time itself. YOU KITS EK1C 3 bande CW . So for the longest time I have been using a Sotabeams linked dipole. This setup worked very well for us (SPARC) for Field Day in 2014 and 2015. co. Antenna used on my station was the multiband switched dipole, Kevin was using a SOTABeams dipole. Amateur Radio outdoor operation specialists SOTABeams have updated their portable Antenna to reflect a change in operating conditions. But half way through the activation, I changed over to a linked dipole which I had purchased a week or two earlier, from SOTABeams in the UK. I figured it best to follow the “What Radio should I use for SOTA” posting with one about antennas. Ham Radio and Amateur Radio online equipment sales. Even once i noticed it was broken it was fixed with some electrical tape and we kept on trucking. 5watts) and was able to make contact with Fred G0EHQ in Bromsgrove, Worcestershire. Your bundle total cost is $175 with free shipping. Compared to my old 60/40/20m linked dipole it was obviously shorter which made it easier to find space to erect it. It is a dipole antenna with sections that can be linked together or removed to enable/disable bands. I try to point out every interesting facet of this cleverly engineered dipole system. My previous (great) dipole from SOTABEAMs was a 20/30/40 linked dipole however due to my license in VK I could only use 40 so had never even opened a link before. This not only means that you cannot lose them but also that in rocky areas you can guy your pole by putting the Wirewinder in a crack in the rocks or Sotabeams 20m/40m dipole antenna with 8m mast for portable operation. 9 states on 40 and 19 states on 20. 1 shows the two essential dimensions of a real dipole. The photo above shows the contents of my antenna pouch, for a standard SOTA hike. I got the courage to cut my unicorn blood DX wire, and began the process of making a link dipole. A simple pair of lightweight dipole traps for portable use to help with running multiple bands and the band changing efforts. 68 · 36 comments . Thanks to KI6SN for his efforts and the Adventure Radio Society. Trap resonance on the four bands is nonexistent. Sotabeams ham radio s including the wsprlite link dipole martin s site 6m lightweight delta loop for sporadic e contacts mØlte s 6m lightweight delta loop for One project I'm currently working on is to build a "Linked Dipole". The low-impedance output of each trap is used for this antenna. The rig was the Elecraft KX2. So in the case of a long-for-wavelength dipole, you have an X shaped pattern with gain in certain directions but serious negative gain/nulls in other My first couple of SOTA activations used a SOTABeams Band Hopper III linked dipole. Such important things have to be done, and therefore I activated the summit earlier today using my FT-716ND and linked dipole. We made a summit to summit with Peter, VK3PF on VK2/RI-006. I’ll continue this test when I have the second WSPRLite! That’s all for today. Loss at 3. Easy to build and tune. - eHam. I decided the middle size guy ring from SOTAbeams was the best option as it sits nicely on a joint and is a nice height but also not too steep an angle to collapse the pole, hopefully. I have used it for both Field Day and for SOTA operations. I slid it down to a reasonably but not excessively snug point and wrapped some tape around below that to stop drifting lower and possibly cracking as the plastic is fairly brittle feeling. The problem with claiming gain from a dipole, is you have that much gain in what direction? You only get gain by taking signal from some direction and concentrating it in another direction. At first I was using a SOTABEAMS speech compressor and the audio wasn't great. I mainly use a 60m/40/30m link dipole with a SOTArised clone of a Buddistick for 30m/20m/17m/15. Click here to sign up for SOTAbeams Band Hopper Multi-band Portable Dipole Antennas are pre-assembled, resonant multi-band, dipole antennas. I can not explain how much this dipole has changed my operating. You never quite know when the band will open and where it will take you. Note: You are also advised to read: Guidelines for Activators Winter Safety Notes; Introduction. 95: ARRL-5916: BOOK, ARRL GET ON THE AIR-HF DIGITAL, 0833 Last week I was monitoring 80m on the "official" WSPR frequency 3. Ramsey QRP amplifier (15w o/p 20m, 25w o/p 40m). With the decline in solar activity, 40m is getting to be hard work for more local HF contacts. To be safe you can check the antenna with the SWR function in the X108G. 3 · 8 comments . The power cords are routed through a SotaBeams 4-Way distribution box. The dipole is made of #14 stranded copper wire radiating elements, a 1:1 balun, a pair of insulators and a pair of the new traps. 2018-10-22 Proud as I was of the bracket I made (see below) to mount a female BNC jack on the center insulator of the Sotabeams Linked Dipole Kit, the result was a bit "bulky" and was hard to put into portable rig bag. It will be much more omni than you would expect and it wont be a DX antenna. Followed the guides form all the normal places, VK3ZPF and VK3PF and the Sotabeams Calculator among many. Right now the 10m of RG174 weighs more than the dipole elements. Our Linked Dipole will have a 1:1 Balun. uk who sent the wsprlite to 65°N for testing and review. My antenna of choice was the SOTABeams Band Hopper link dipole for 40/30/20 meters supported in the middle by the Tactical 7000. 5686MHz dail. When you unroll the elements you will notice that the Wirewinders are attached to 4m (13ft) nylon braided extension cords. INVERTED “V” ½ Wave LINK DIPOLE There are several designs around for a HF link dipole. Note that you should not cut too wide in the Wire. Bundle value is $226. Vertical separation can be achieved by positioning the 70cm dipole above the 2m dipole. I’ll have to run with a tuner and spread out the coax on the floor of the balcony. This worked well, but with two wires, a 10m coax and an extra guy, it took a bit of time to set up and it was easy to get all the wires tangled if the wind got up. Posts about SOTAbeams Travel Mast written by rjbono. It is simple You now have a 70cm 1/2 wave dipole which you can confidently use for a SOTA activation. One technique is to resonate each trap in the middle of the ham bands, while the other is to resonate the traps between ham bands. Thanks Listing #1442026 - Submitted on 06/02/19 by Callsign KI7BJS - IP: 160-2-70-64. Trap at 6. SOTABEAMS Band Hopper 4 portable dipole antenna system product reviews by real people like you. Lots of planning First test of FT817nd with SOTAbeams 2 band bandhopper dipole on an 8m SOTAbeams pole. Activating by John, G4YSS. As the late spring and summer months heat up, six meters comes alive. !) I have called this the LoStRoPo multiband dipole. 51MHz trap in 80/40 dipole . The linked dipole is light and the only awkward part of transporting it is needing to bring the pole, but it’s light enough too and I just strapped it to my backpack. The antenna bundle comprises two blue winders (for the two legs of the dipole) and a green one for both the third stay and the lightweight feeder cable (which has a BNC plug). The W3DZZ antenna is a famous multi-band design that is great for portable operating. “The Rules” •All antenna and mast activities are the responsibility of the individual ham; not Lake Washington Ham Club. Into the HF antennas odds and sods box and I got out one of the SOTAbeams lasered guy rings I bought to hang the dipole from. 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. Not many contacts but a good QSO with Chris GB2KW . Find great deals on SOTABEAMS for Three-band portable dipole antenna system. In that video, I said it was one of my two “go-to” antennas. this is important. Linked Dipole Kit from @SOTABeams with RG174A/U Coax. Tag / sotabeams linked dipole . This is the antenna of choice for mobile county hunters. For VHF, anyone who has ever used the old AEA Hot Rod end fed half wave antenna for an HT know the drastic improvement it made over a 1/4 wave antenna. The boxes i have used are very small and light, and will not add much weight to the final design. Any damage or injuries are solely the responsibility of the ham erecting the New Portable Antenna Covers 60m Band. HamCity has more than 30 years of experience in the amateur radio equipment business! Please visit us today for all your ham radio needs! Trap dipole verses fan dipole; There is a company in UK called SotaBeams, and they manufacture a kit for 'traps'. As is so true of amateur radio itself, there are many variations of SOTA activating, which allow it to be as easy or as difficult as you wish it to be. Posted on 16 november, 2018 17 november, 2018 by Henrik Persson . I had taken down to work on the Homebrew Buddipole early last evening but left the 40m vertical in place. Here are some other examples of the end fed half wave antenna. I have checked it with my Rig Expert and found it right on the bands and ready to use. The estimated times and actual HF frequencies will be pushed to SOTAwatch on the day. The Band Hopper is designed for the lightweight portable specialist. 7 MHz = 0. The SOTAbeams band hopper uses RG-174 coax as well, the smallest coax that I have is RG-8X which i’ve used on the military mast, but i’m concerned it may be a bit heavy for the spiderpole… lots of stuff to test out before June 24 & 25 get here! This is probably the one event our club really looks forward to every year. Being just a A review of the sotabeams picotuner antenna coupler linked dipole sotabeams kit review sotabeams wsprlite with additional accessories qrz forums peak lcr45 at sotabeams You’ll find you will do much better on 6m with the SOTABeams Moxon compared to the dipole. According to MyWot, Siteadvisor and Google safe browsing analytics, Sotabeams. Video shows how a lightweight portable antenna can be easily erected in the field using equipment supplied by SOTAbeams and techniques developed by Richard G This is an in-depth look at a 20m/40m SOTABEAMS linked dipole. It is compact, easy to deploy in a tree or on a telescoping mast, and it gets good signal reports. This week members of the club will travel up to the Lake District for some attempted SOTA activations. From left to right EFHW, Coax, Tape, SOTABeams Pole hangers, 404UL OCF Dipole (on SOTABeams wire winders), Flouro builders line (for hanging wires from trees), Squidpole Guy wires, pegs and shackles (can't remember their name, but from Bunnings). The collapsed green windsock pole is at the back, with the rolled up antenna in front of it. 5–23 pF, respectively, used instead of 10/20 M jumpers or ~18 pF capacitors for 30 M band instead of 20/40 M jumpers. the dipole on 20m, to the 50ohm's of your coax, will not happen if you stick the balun/choke in the feedpoint of the antenna like you would on a normal dipole antenna. I wanted to make a link dipole that I can take on SOTA activations. It’s also possible to run a 40m 1/4wave vertical up the side with a little winding on the lower -Center fed half wave dipole -Dependable, repeatable performance, particularly with balun -Somewhat more effort than end fed wires - but not much if inverted vee configuration - Center at least 20 ft up, ends above head level -Can be mulitbanded -Leapfrog segmented dipole -40/20/15 tri-bander -Doublet uses open wire line for multibanding WTB a SOTABeams Tri- Band Hoping to find a multiband linked dipole sotabeams antenna. I took the easy route up from the “ESB” car park. Sotabeams package came with pleseant suprise. 500 (FM). Some camps say that a dipole is more efficient and a better choice for QRP (more efficient means signal gets out further so buddipole) then others tell me that unless I can get the dipole tens of meters into the air im just going to transmit straight up (very poor DX) so I would want a vertical antenna (alpha vertical) Im going to be doing SSB PackTenna Antenna System Ultralight, portable HF amateur radio antenna system. Was the this the answer that my TRX kits I needed ? So, I bought one. 15 MHz = 0. Now when 40 dies around lunch time on a summit I can easily work 15 or 10. » Comparing the performance of an inverted vee dipole with a small transmitting loop on 40m » Evaluating an antenna test site » Indoor HF antennas - does it make much difference? » Using two WSPRlites and DXplorer to compare two 20m Yagis » Using two sychronised WSPRlites and DXplorer to measure a known power difference - My linked dipole for SOTA activity had been built from a kit from SOTABeams. This was a quick add on that I managed to carry out last weekend. Putting a WSPR Antenna Test Methodology through it’s paces. The first thing to ACARA Club Construction Project — 20m/40m Trap Dipole — a Success! January 22, 2018 Eric McFadden The ACARA Club Construction to build 20m/40m trap dipoles, long in the planning and twice delayed, finally happened on Sunday, January 21, 2018. Off to a local hilltop common to set up the mast and antenna and tune the dipole sections. A means of waterproofing the dipole centre/balun – SOTABeams liquid tape for lightness or an enclosure or self amalgamating tape Silicone sealant for sealing the trap ends. My homebrew 6m dipole strung up and For issues with this site, email the WSPRNET Admin Team or post to the site forum. If you wish to operate 5 bands you will need 5 hamsticks. It shows a very good SWR for the bands. I did not make a lot of segments in my dipole 40…10 M bands, only ones for 40, 20 and 10 M bands. The links are more rust than metal, the centre has been broken and repaired a number of times and replaced, the coax and antenna wire has nicks in their sheaths. If you just connect it to your coax or rig you will be disappointed. Since we tend to feed the dipole with coaxial cable, we are concerned with the antenna length and resonance. It contains all of the pieces to allow you to make up a multi-band dipole, using crocodile clips to connect together the sections of the elements, tuning for different bands. Trevor and Kevin made many contacts on 40m. That being said a dipole can work into Europe during a good Sporadic E lift. In other words, we want a good match between the coax and the antenna feedpoint. uk is poorly ‘socialized’ in respect to any social network. I used the sotabeams 40-30-20 linked dipole with a 7m telescopic fibreglass post. The winders are made from Spanish Cedar. Regrettably it 's been quite a while since Ron sent me this antenna till I was able to eventually put it to use - but yesterday saw me out on edge of the golf links here in St Andrews, only a few metres from where the Open Championship was held a couple of weeks ago, working portable connected to a new car battery for radio power. Bret I assume from your gear list that the 30 meter WSPRlite is the only transmitter. With the SARK-110 Antenna Analyser is very easy measuring the resonance frequency and the impedance characteristics of traps. This was the first summit of two for the day. (Sota) Summits On The Air. il SOTABeams Linked Dipole Kit Sun, April 21st, 2019 11:08 am 0. Includes a description, demonstration and a look inside. 4dB! The reason loss is low is we have moved the trap slightly out-of-band. I could also hear M0WBG on a Sota activation G/WB-005 145. 1 | P a g e White Paper WSPR by Joe Taylor, K1JT for transmit and receive antenna comparison by Larry Plummer, W6LVP January 10, 2017 EZNEC and other analytical tools are great for initial antenna design. uk Find great deals on SOTABEAMS for Three-band portable dipole antenna system. Beskrivning Band Hopper Multiband Portable HF Dipole Antenna System _____ ***IMPORTANT NOTE: if you are using a Band Hopper with our 10m Compact Travel Mast, attach the antenna with a cable tie to the top of section 11 (counted from the bottom). There are two different techniques used. £32. strictly correct, that antenna is a dipole only at the lowest frequency of use. I then set up my Mountain Topper and SOTABEAMS dipole and work 11 stations… 8 of which were 5,000+ miles away! This will show you that a tiny, battery-powered radio can produce excellent results and allow you to have a ton of fun. This was the best Bumblebee Event in a couple years for me. I have bought the Toroid and the 13m Coax cable with the attatched connector from SOTABEAMS. I had already decided this was going to be my play time for radio's so I set up my Sotabeams linked dipole. An Attic Coaxial-Cable Trap Dipole for 10, 15, 20, 30, 40, and 80 Meters John DeGood, NU3E nu3e@arrl. Cut the outerside of the Coax Cable from the Cable like shown on the Picture. As the result of several requests, I have started making traps for this antenna based on our standard 100 Watt trap range. We dont post this group into other groups, so please dont post other groups on here, I'm sure other members The search for such antenna endup with the trapped dipole or the linked dipole. 15 MHz. net. Fiberglass fishing pole 7 m – I need to buy another one. After 2 years and 100 odd activations, I somehow managed to break the sotabeams linked dipole. This is a 104-foot long antenna, with very poor Q traps, and loss is less than . This dipole is multi-band for SOTA and covers 12 metres, 20 metres and 40 metres. This is great for /P operation where you often only activate one band and where dropping the aerial to make/break links isn’t a problem. Notice the change in trap location. It was a only a short activation, but nevertheless 12 QSOs from 10 DXCCs came in the log; all on 20 meter CW/SSB. The SOTAMAPS web site has a great inverted V linked dipole calculator. 2 watts (200 milliwatts), configurable 5mW to 200 mW via supplied software. 525 FM but weak signal While searching for an alternative to my Linked- Dipole I tripped over the posting of Pedro, CT1DBS, illustrating an end-fed half-wave (EFHW)- Dipole with Traps. Had to put up the Union flag on the 10/12/25/17/20. Of course, the answer to this question really depends on what you have selected as your radio type. We work out the trending price by crunching the data on the product’s sale price over the last 90 days. When you are finished it should look like on the picture. The 4mm plastic nut, bolt and washer were not used because the choke balun sits flat against panel. New dipole center insulator · 5 comments . The PackTenna is a light weight, compact, portable HF antenna system ideal for operating on the trail, at the campsite, on Field Day, SOTA activation, air travel, or HOA restricted locations. That is the first Part on our way to the Linked Dipole. As soon as I put out my first call, the game was on. Ray made his career as a television, radio, and audio visual equipment repairman, and now specializes in th . 2 meters Amateur Radio ARRL Bioenno Contesting Digital Modes Elecraft Elecraft KX3 Field Day Hamfest Ham Radio HF HF Antenna Hustler Vertical K1JT K5ACL Kenwood Kenwood 590SG KX3 Link Dipole Morse Code N5OAK Outdoor Ham Radio Panadapter Parks on the Air Portable Ham Radio POTA QRP SDRConsole Shortwave SOTA SotaBeams Summits on the Air UHF VHF What I really wanted to do was have a vertical half wave dipole, but the problem is that while the impedance at the centre of a dipole is about 50-75 Ohms, and very easy to match to coax, an end-fed half-wave has a very high impedance indeed, around 3000-4000 Ohms. Sotabeams, value for money thats for sure. Will try and wind 30 ft of wire on the 26 foot pole. New refers to a brand-new, unused, unopened, undamaged item, while Used refers to an item that has been used previously. In nutshell, a trap dipole or inverted vee is like a link dipole or inverted vee only instead of using alligator clips to connect/disconnect the various segments for each band a parallel resonant trap is used. We will achieve this through specialist advice, training and products. This was for 20/30/40 M but after my activation with Allan GW4VPX I had decided to add 60M as well. It is very easy to deploy and stands up to the winds. I chose to look for a station operating on 40m as this is the best band for local (VK) signals during the day. SOTABeams linked dipole or Aerial-51 OCF antenna. A different option is to mount two dipole antennas on the same pole, one each for 2m and 70cm and feed the antennas with a VHF/UHF duplexer. The 4 foot boom with a 16 foot turning radius will fit perfectly in a townhouse 17 foot lot. This is a small beam perfect for the suburban or downtown home owner looking for some gain on 20m to 6m (30m/40m it is like a dipole). net is a Web site dedicated to ham radio (amateur radio). Rig was KX3 and it purred like a kitten. Fred was cracking signal 59++ and gave me 5/9 in the clear. Next choice is a vertical 20m dipole. SOTAbeams makes telecommunications products tailored specifically to the Ham Radio community, including the popular WSPRlite Propagation and Antenna Tester. In this video, I get a chance to talk a little philosophy while driving to a local park. I built up the antenna, followed the instructions and started with the 20m bit first and its miles off, I adjusted and trimmed and checked and Portable link dipole Termination box Wanting to work more than one or two bands with a portable antenna I decided to build a lightweight inverted vee antenna that could be supported by a 10 metre long fiberglass squid pole. This antenna is just a simple wire dipole, but it has breaks along the wire that can be either connected or disconnected, allowing the antenna to be tuned for one of several different bands. Witha resonant antenna such as an inverted-V dipole or linked dipole an ATU is not required. All Products Listed: Item # Description: Retail Price: ARRL-5914: BOOK, ARRL MORSE CODE, 0163: $15. I only took a 2m FM equipment, utilising my trusty Yaesu FT-270 with the SOTABeams MFD dipole, making for a lightweight and ultimately rapid deployment setup that suited a day more focused on walking than radio! Building the 6 Meter Moxon Antenna. READ MORE Sotabeams. HAM Radio videos made by radio amateurs This site holds HAM Radio youtube videos made by radio amateurs 10m Telescopic Fishing Poles : Standard and “Travel” aka: DX-Wire/SOTAbeams It’s 115cm closed and a few cm short of 10m when extended – The dipole centre can sit on top of the 2nd section making the apex of my 40m Inverted-V around 9m up. End-Fed Antenna projects and plans is a curation of 58 resources about , W3EDP Antenna, N2CX on End-Fed Halfwave Antennas, Endfed wire antenna tuner by KC8AON, QRO End Fed Half Wave Antenna Coupler, End Fed Half Wave Antenna Coupler. I used RG174 and some liquid tape on all the centre connections (again sotabeams). We aim to encourage, support and facilitate all radio amateurs to take their hobby to new places. 2 x 5000maH 3S backup LIPO batteries with 150w inverter to create 13. We had some much needed rain at the QTH last night. What others are saying Amazing online tool to create your personal vegetable growing cheatsheet, 10 Things this Vegetable Growing Cheat Sheet will show you: When to plant How far apart to plant seeds What needs propagating What needs to be in a greenhouse What size pot to plant A different approach to the dipole theme is the W3DZZ - type of trap dipole, originally developed from a series of practical trials to obtain an antenna for multiple amateur frequencies, to be fed with high impedance transmission line and be used in connection with tube-type transmitters with a higher termination impedance than contemporary There have been many manufactures over the years that built half wave vertical antennas that had only a few short radials. SOTAbeams 40/30/20 trapped dipole 10m SOTAbeams mast. Unfortunately, after many years of use and substantial abuse, the antenna broke on … Continue reading "Repairing the 40/20/10 EFHW antenna" I hadn’t activated LA/OS-003 in 2018. Some people might take issue with using the word "dipole" because the antenna has more than two opposing polarities along the length, but in my opinion it is perfectly fine. The latest Tweets from SOTABEAMS (@SOTAbeams). As Irschenhausen is a forested summit, there was no reason to try to use the VP2E antenna as verticals simply don’t work in forests, so I decided to take the lightweight set-up of the 6m LambdaHalbe mast and the SOTABeams linked dipole along with my screw-in-the-ground sun umbrella base. vendo per mancato utilizzo apparato. An inverted dipole at that height for lower bands is a different beast to a horizontal dipole 1/2 wavelength above ground. However, when on holiday I wanted a similar triband dipole (20/30/40m) that I could erect for a week and not have to touch. Its been broken and repaired a number of times, but its getting to the end of its life. So getting the linked dipole will give me an antenna that requires no tuner therefore make some portable operations a little lighter not requiring to take the LDG Z817 tuner. No returns and PayPal only. This is a really versatile aerial for “portable” operating and is also quite simple to make – It’s a 40m Inverted-V Dipole but with the wires cut at certain points with crocodile-clips soldered onto each piece of wire end. The cable has a SMA socket and makes up the choke balun. If you are in the hunt for a 17-20-40 linked dipole as well, enjoy the linked PDF. The main category is Dipole antenna that is about Dipole antennas plans. Strain precautions using cable ties or thimbles The sun was out a few days ago. But I really like dipole antennas for HF, easy to make easy to tune, only problem is the space they take up. 15 MHz Q=130 TRAP 40m VSWR The resource is currently listed in dxzone. Can't remember the writer of the article but it was in dutch and this station made QSOs in the middle of the summer with the USA just at 16 UTC in the afternoon on a regular basis. That is a nice setup, the HF dipole from sotabeams is basically just some wire, so not good for permanent installation. sotabeams dipole

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