Tune hamstick dipole

Tune hamstick dipole

2 or 15. Easy to Install and Use KM5M on 23rd Apr 2014 The NI4L end-fed 40-6m dipole antenna is just about perfect for portable operation. 5:1, and Yaesu int ant tuner tunes it! ProComm PCF40 - 40-Meter HF Fiberglass Ham Stick Antenna. We are having a demonstration of QRP and Portable operations and I will be supplying the food and drinks for the barbecue. g. The HAMinator Jr. One side of the dipole goes up from near ground level to about 14 meters (45 feet), then out (25 meters) toward the front of my lot. Band width seems to be very narrow forcing the use of a tuner to use the entire band. I have gotten a pair of MFJ hamsticks for 40m and was going to set it up into a dipole on top of a PVC pipe that I use for 2m and 440. Detailed step-by-step homebrew info is available here for the dipole mount. Hi-Q-6/160 RT MC-3H HF Mobile antenna on the top of my carport with ONLY an 8’SS whip and NO CapHat. Please note: Not all unblock requests will be successful as it is dependent on how your IP address is being blocked. When we consider just an dipole, with no feedline or anything else around it, it's very For portable operation, I use 2 (Hamstick) Mobile Antennas with an adapter to configure them as a loaded dipole. I think this tuner could tuner a shoe string if I tried hard enough. Sep 04, 2019 · What's New at Diamond Antenna Suggested Retail Price List (pdf format. 5. It is normally about 55 feet for each leg, for a total of 110 feet in length. Now, this is a Far Field pattern at 33ft/10m up in the air. Just transmit a carrier and press the tune button on the tuner. 73 es Safe Travels Jun 30, 2017 · HAM Radio in an HOA-Backyard MFJ 1620 T Hamstick. These handle up to 250 Watts but if you run lower power, they are a great alternative, particularly if our ProComm versions happen to be out of stock. A suggestion would be to try your "hamsticks" in a dipole arrangement first, tuned for lowest swr at  The HAMinator Jr. (40. Products By Manufacturer. MFJ Mini Dipoles are very clever! Using a special center section that connects two 7 ft. A dipole is a particular machine for creating EM fields. •Small loop antennas can be almost as efficient as dipole antennas over 20m –10m; over 160m –30m performance within one S-unit •High efficiency require larger construction (e. Have dipole setup(2 sticks), and unable to tune with BOTH whips inserted into fiberglass portion! When I leave one whip out, other inserted about 6" into fiberglass, SWR reads just over 1. It is also only 76 feet long (58% of a typical 80 meter dipole) and is quick and easy to deploy in the field as a sloper when a single strong support is available. It tunes the antenna *system* to achieve a Z0-match that re-directs all the reflected energy back toward the antenna. American Radio Supply - HamStick Amateur Radio Mobile Antennas Mobile Monoband Vertical HF Ham Stick Antenna Hamsticks Hamstik The cookie settings on this website are set to 'allow all cookies' to give you the very best experience. Portable antenna systems for HF VHF UHF. After trying to tune it up for a couple of days, I looked at it closely and there were 2 turns at the top of the base. 8 MHz. The water jug hanging from it is to give it ballast against the wind. :D Total DIPOLE FOR 40 AND 15 METERS WITH MATCHING SECTION FOR LOW SWR ON 15 METERS. More gain than a 1/2WL dipole on 20m, 17m, 15m, 12m, and 6m 6. What I received was a a stinger for 80M and a base labeled 80M but the base was for a 6M antenna. How well do they work compared to a full 1/2 wave dipole. Such is the case with the popular MFJ-1984MP End-Fed Multi-band Antenna, tested in this video from Dave Casler (KE0OG). The H-422 is a broad-band, compact, rotatable dipole designed to offer excellent performance even when mounted at only 10-15ft above ground in a V or horizontal configuration. (17 x 2 = 34) If possible, erect the dipole into the desired position to make SWR measurements. Mine are for 40M. EZNEC shows quite clearly that even with the lossy 75m Hamsticks, I am more than 3 db up on the wire dipole at decent takeoff angles, and the closer I get to the horizon, the better the Hamstick dipole is when compared to the wire dipole. As the name suggests, the length of the antenna is about half of the wavelength of the frequency the antenna is cut for. 213 MHz. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from MFJ Enterprises, Inc. The antenna works on the bands as advertised with low SWR. That crude setup is from spending too many years on the farm! :>) Above is a closeup of the tripod. Only MFJ has exclusive, isolated dipole elements that let you insert balun or coil up coax to isolate feed line. However, on 20 meters and above, the large horizontals present an azimuth pattern with many deep nulls. The idea is to set up a voltage between the two halves of the dipole in such a way that an EM field is created and efficiently radiated away. The fastest way to setup portable as it does not require retuning after it is set and no trees required. As I write I am listening to a conversation on which my switchable dipole is able to hear only some of the stations (they are also having difficulty and are relaying A dipole is a particular machine for creating EM fields. Since each HamStick is roughly 8 feet in length, the total length would be 16 feet. The Mast Company Titanex Ultimax Antennas US Tower Corp. This thing needs to be re-tuned after anything more than a 100khz change in freq. It is extremely important to tune the ham sticks as a pair in the dipole configuration with an antenna analyzer. Winter Fireside SSB 2014 . is a Rotating Dipole Kit made from highest quality Procomm PCF series fiberglass "stick" antennas. I put the antenna on a 10-foot pole to tune it to 7. Histoire du Five-watts QRP DE 1968 à 1981. The 40 meter dipole was loaded with some coils so that I could fit it in the attic. The Norcal Doublet is a favourite antenna that can be made for $2. In 75m shootout tests, the 75m hamstick was 10dB down from a screwdriver and the 11' whip with autotuner was 13dB down from a screwdriver. One half wavelength or higher is the target for a DX oriented dipole. On a CB radio, tune to Channel 1. 5 NEW from Hi-Q-Antennas: HOW GOOD IS a Hi-Q Antenna? Follow one 24/7/365. SWR (standing wave ratio), is a measurement of how efficiently your antenna system will radiate the power available from your radio. A long wire that is done with the Wireman invisible wire so you can't see it. A knob from Radio Shack, 3/4 inch PVC and scrap plastic, etc. This antenna was appealing to me because I live on a small city lot, where my entire backyard is completely taken up with a swimming pool. a mirror or luggage rack mount on and R. This standing wave consists of both current and voltage that are 90 degrees out of phase. Click on Calculate and the opposite value will be displayed in feet and inches or frequency in megahertz (Mhz). I got to thinking this morning about that Hamstick "L" antenna I had on my PedMobile last week which seemed to do pretty good, especially that Indonesian DX QSO with my 5 watts. On the HFN HAM ALE. The next antenna would be the 40M / 75M trap dipole, which has shown it will normally tune the three bands. Height is the key with horizontal dipole based antennas for DXing. The High Sierra brand gets very good reviews, but I'm a little reluctant to spend that much money right now. And Here's the Coil on the 40m-Version that turns a hamstick into a real 40m mobile antenna. It was built to take along camping so I would only have to take & put up one antenna instead of two. and roof mounts on pickup trucks x\ith metal Normally a bumper mount IS the poorest choice of mounting locations. I have used this setup in Motels/Hotels with my SW-40+, SST-40 or OHR Explorer for 20M. This Dipole system is fully adjustable from 10 to 80 meters. Hamstick Dipole This is actually two MFJ mobile antennas with a dipole adapter I got at a hamfest. 5kW balun are included. I support the feedpoint on a push-up painters pole on the rear of an RV trailer and drape the wire over a nearby tree branch. Jun 14, 2001 · The hamstick dipole on 40m is down 10db from the trapped dipole. First is a hamstick dipole setup. If you're looking for a low cost solution for a portable hamstick antenna pole for your ham radio, then check out this video. Don't know how Chris did it, but I would first tune each one seperately with an MFJ analyzer for the band it was designed for. The antenna was never very well tuned on any specific band, but it managed pretty well on 30 and 40 meters with either built-in or external tuners in the shack. Note the use of 450 ohm ladder line as the antenna feed line, which enables multiband HF use. (Updated September 4, 2019, pdf format. Assembles Quickly. Tuning the antenna How do you aim a dipole? This is a question that was asked by Larry KC7CKO who has recently upgraded and is going to install a commercial dipole on his property. 2:1. I do. I trimmed off equal lengths of wire from both coils to tune the short antenna to the same frequency as the half-wave dipole. The radiation pattern is similar to that of a dipole, perpendicular to the antenna. I have had this Hamstick Dipole setup for sometime attached to a 19 ft pushup Painters Pole and it has worked well for me while portable. would be reduced to 5 over S-9 on the hamstick dipole, but you will not do. Dual band tiger tail Dual band tiger tail Sure, you can build a fixed-tuned dipole or vertical type antenna with 50kHz of bandwidth on 80m, but if you always have to run outside with your antenna analyzer any time the antenna gets damp to re-tune it, you're going to go nuts. The antenna mount was bolted onto an old painter pole I use for portable work, and raised up to 11'. Today I hope to tune my antenna up a bit more. Given a 1/2WL resonant dipole, 1/2WL of ladder-line Dual Hamstick Dipole View from below showing the crossed pairs of 20m and 40m dipoles; very portable for emergency work, and easy to tune up for any ham band by putting in another pair of hamsticks at the desired frequency, and tuning by plotting SWR. 40m Compact 4-Squ But not so fast, mobile dude… The Case for an Automatic Controller Screwdriver antennas come with a manual control switch to allow you to extend or retract the coil to tune the antenna for dif-ferent frequencies. is a Rotating Dipole Kit made from highest quality Just buy an extra whip and ferrule for each antenna and you can pre-tune for low end or  26 Feb 2011 In fact, here's a link to a multi band hamstick dipole project I have On their own, each HamStick should tune to a low SWR, but as they are  If a "Fan Dipole" is possible, and a "Hamstick Dipole" is not only possible, but One is to mount and raise one pair of antennas at a time, and tune each pair to  Items 10 - 40 00 inch diameter tube. short verticals) Hurricane "T" connectors ($4 at Lowes) bent and drilled out to accept 3/8 inch threaded connectors for horizontal or vertical dipole (left) or horizontal V Beam (right) mounting (black coil and wire is for another project). This portion becomes an inverted "L" ungrounded quarter wave vertical, 39 meters in length, made up of #14 stranded (7x22) copper-clad antenna wire. Of course, the Z-817 will also function as a general purpose antenna tuner with other QRP radios. The Isotron Antenna. I decided to go back to the drawing board and starting from scratch, designed an entirely new, much lighter, 2 meter vertical dipole. Tried it out on 6M and it tuned great. much DX with it. In doing the research the conventional wisdom was that 20m and less would work, 40m was iffy, and 80m was just a dummy load. Good results from a mobile station are much easier to obtain on the 20 meter and higher frequency bands. If you want to include 80 meters, then you'll need at least 40 H of inductance. 266, Now. This is the second antenna I purchased from them. ,you were right,thanks for answering the question. Site de K6XX sur le FT 817 ND. Jun 22, 2018 · You should be able to tune a Hamstick dipole to within a 3:1 match or something that a built in tuner can handle. When using "Hamstick" antennas it is usually practical to use a trunk mount on sedans. Dec 30, 2016 · If you are anything like me, you’ve probably tried HF mobile before and you may already have the main piece to build this project; a hamstick antenna. My next antenna projects will be an OCF Dipole, and a Fan Dipole. org by KA5YIX. We can also provide Fiberglass Stick Antennas by Workman Electronics for 6, 10, 12, 15, 17, 20, 40 and 75 Meters. I use a Camera Tripod for support. Both antennas are similar in that they use a J style matching system consisting of a 1/4 wave stub, but the difference between the two is that the Slim Jim is a half wave folded dipole antenna. , asymmetric hatted vertical dipole is a worthy alternative choice to many freestanding portable HF antennas including the “I” shape symmetrical vertical dipole and the various Buddipoles. In the process of designing the mount, I came up with the idea to make the assembly foldable for easy transport. Hamstick Di-Pole Very easy first antenna project, the Hamstick Di-Pole is made by using a DPC-38 Dipole Center or MFJ-347 to Join 2x Hamstick Mobile Antennas to make a Base Antenna. com: MFJ-347 HAMSTICK/DIPOLE Mount KIT (for Any 2 HAMSTICKS AS A Base): GPS & Navigation. While your Hamstick dipole will certainly work, my concerns include how efficient is it and the very narrow 2:1 bandwidth. Operating frequency 27- 174 MHz; 5/8 wave; 49 inch long . •Hang a dipole or end fed L or random length wire between trees –Use small gauge wire (18 ga black wire is ideal) –Higher is better –Slingshot or bow and arrow to get wire up in the tree A Stealthy HOA HamStick directional Dipole. Delta Fed Dipole Antenna 13 18. Windom – Similar to the OCFD. The hamstick dipole at 17' above the ground is nearly 3 times more efficient, but the peak gain is at a higher angle. As height is increases the gain increases at lower angles and the dipole exhibits more directional properties with the highest gain broadside to the antenna. G5RV – I’ve not seen this done, Sep 29, 2017 · MODELING 20M HAMSTICK DIPOLE (MFJ-2220) Behavior in Far Field: In far field the antenna exhibits some directivity and low angle of radiation and yes, I noticed and used it while making DX contacts. Build Your Own Multi-band Mobile Ham Antenna with a Hamstick. Frequency Sensitivity. Tune up the antenna before installing at full height. 70 cnts) pair of Tx/Rx modules. The problem with these is that they are simply too inefficient. The Hamstick dipole warrants an effective current balun (one with high choking impedance) at the dipole end of the feedline. Why Is The Dipole So Popular? Because it is an inexpensive, yet effective, antenna, especially if you build it yourself using wire, insulators and rope that you already have in your (or a friend's) " junk box " of spare parts! Mar 29, 2019 · Attach the radio to the transmitter socket on the SWR meter using a coaxial cable. (Jjh***) You can tune dipole for higher freq, but feedline loss will be a lot Each 'HamStick' has a whip that can be tuned for best SWR. 250 in. Randy ka4nma Hi Randy, as you know Hamsticks are dogs above 20m. Mar 08, 2018 · I proceeded to make a very heavy dipole from copper pipe, akin to the type used for J-poles. Coax was attached to one of the mounts. It includes a light stand (I believe around 12 feet tall), an extension pole (probably around 8′ when extended), a hamstick dipole mount, two 20 meter hamsticks (off-brand), a single 40 meter hamstick (off-brand), a pulley that will …read more Hamstick dipoles. The Z-817 is powered by four AA internal Alkaline batteries , so there are no additional cables required to use the Z-817. G. Fed at 34% from the end, it uses a single feed wire and can be resonant on more than one band. My hastily built prototype offers promise for Field Day 2013. Enter the desired frequency and select the desired calculation from the drop box. Prices & items subject to change without notice) Download our 32 page catalog! Diamond Antenna Product Catalog. Then I would put them all on the mount and use the analyzer to verify each band and retune as required. You should glance at Yahoo’s home page and note how they create post titles to grab viewers interested. G5RV Antenna 15 22. Vertical Dipole Portable Base Mobile Alpha Magnetic Loop antennas Tarheel Antennas, Inc. 500,I decided to test the swr at this frequency,and the result was perfect swr of 1. In terms of overall performance, the array appears to work just as well as any single band "Hamstick" type dipole. V. Multiband systems present a unique problem. This is sneak peek at the project and I will follow up with a very detailed build, tune and operation on 20 and 40 meters bands using both Phone and digital PSK31. Your Ham Shack Pictures, Blogs and Projects. Antenna Hamstick Dipole Antenna Copper J-Pole. Two sets of whips for 40 and 75 meters were assembled. I have made both 20M & 40 M Hamstick dipoles, they work ok, suitable for short term use (damage easy in wind) and benefit from a loop in the coax just before So, I decided to put up a 15m hamstick antenna using a single truck mirror mount that cost me $5 at the last ham flea market. Rotatable using an inexpensive TV rotor for coverage in any direction 4. Prefer bal into house, but no good route. As an example, a 28-31 foot wire will typically allow 40 thru 10 meter coverage and a 43-50 foot wire will provide access to 80 thru 10 meters. Do not try that with this multiband dipole or you will mess up 20 and 10 meters. HF Stick mobile antennas to coax, you may clamp the horizontal whips to a mast, pipe, pole, or any round support up to a 1. Out of all antennas I installed and used at my (antenna- restricted) OTH the one I liked instantly was MFJ "hamstick" dipole(s):  18 Jan 2015 I tried a dual-hamstick dipole for 20M, but was placing it only 24" over the balcony floor, and this is below the edge of the wall. Use a 12" saw to cut the 6 and 4 inch pipes. Good. At ground level it performs as an NVIS antenna on 40 and 80 meters. Horizontal Beamwidth of 31 degrees on 10 meters 3. I wanted to make a simple dipole antenna for QRP portable operation that could be used on multiple bands. A good choke balun at the feedpoint will help keep RF off the coax and make tuning more stable. Amazon. I may just go with a dipole thrown up in the trees, or a hamstick dipole attached to a painter's pole, or even a simple hamstick vertical, until I figure out something better for an antenna. The theoretical impedance of a half wave dipole antenna is 73 + j 42. 5% shorter than a dipole. I had an old wooden tripod for a telescope I had as a kid so I modified that to hold the Hamstick dipole. My first was a 20m dipole fed with 75ohm satellite TV coax. 's. The half-wave ham radio dipole is also the most common antenna used by amateur radio operators throughout the world. This setup with an ATU allows me to work 40 & 20 Meters. Most text on antenna installations recommend antennas be place one half wavelength or higher for efficient operation. Aug 11, 2019 · The next one on the list is a cage dipole. Not sure if folks used just a hamstick in a tripod as a solution. I plan to also add a vertical 10 Meter whip. If you start with a Hamstick that is for a longer wavelength, say, 20 meters, then you'll need less inductance to reach the lower bands. After using the loop for a couple of days with decent band conditions, I have never looked back. If you want to just receive, you can just use a beverage antenna (super long wireliterally that's all it is), but your rig should be well grounded and may even want a tuner in frontbut I'm not speaking from experience hereyou should Google that or ask some of the other guys how it really works. You will make contacts with a hamstick dipole, as on 80m a 20over S-9 signal. The quality workmanship is far superior than others. When we consider just an dipole, with no feedline or anything else around it, it's very The dipole worked pretty well as most resonant antennas do; however, after considering some other alternative wire designs I decided to try a full wave Delta Loop. I have a full set of hamstick whips from 80m down to 6m. USB is probably the best mode to use to listen, you will still hear CW and data I'm 99. . As of June 2013 W6HIQ is an official HFN Pilot Station! Under W6HIQ call letters. coax loop) less efficient but comparable to other portable antenna solutions (e. A 4:1 balun would transform the impedance from 200 Ω to 50 Ω. or 3. I need a count of who is coming to the barbecue on July 7, from 4 to 7 pm at Houge Park in Campbell. The main advantage is that when you want to change bands you just switch the radio to the new band and give the "tune" button a jab. I have plans for a few variations on the Hamstick design: Multiband – I have the materials for a 20/40 fan hamstick dipole. And a couple of other bands. A Hawaii-based Amateur Radio Antenna Blog focusing on the theory, design, and use of homemade antennas. Latching relays are used so that power consumption is Zero when not tuning allowing a set of batteries to last about one year. Le site de re: 2 meter dipole Originally Posted by alvin 1230_0 ok,I tuned the antenna to be resonant at 145. 3 MB) The dipole has a reasonable bandwidth but if you tune it to the high end of the 20M band say 14. Jun 14, 2018 · Another choice for you – This portable realization of the Cebik, et al. The Vinyl wrap is heavy and feels as if it can handle being in the Hamstick-type antennas are least expensive, and screwdriver antennas are most expensive. Tuning it was  It's entirely possible that a tuner may in fact tune a 75M dipole on 40M and 20M. Dipole Cousins Inverted V – Only needs one support. Have dipole setup (2 sticks), and unable to tune with BOTH whips inserted into  26 May 2016 Although the ham stick is designed to be a vertical antenna, MFJ sells a you to use two of their ham sticks as a dipole, much like the Buddipole. And yes, I know about the bandwith and effeciency. Jun 27, 2017 · For portable operation, I use 2 (Hamstick) Mobile Antennas with an adapter to configure them as a loaded dipole. Do not tune the ham sticks individually. 500,so multiplied by 3 that equals 436. Amateur Radio Amazon ARRL Buddipole Colorado contest D-STAR DVAP DX Elmer Etiquette Extra FCC Field Day FT-817 FT-897 FT-950 Ham Radio Deluxe Ham Shack Hamstick Dipole iOS iPad iPhone JT65-HF KD0BIK kx3 man cave MyAmateurRadio. It works great and tunes real nice. Resources listed under 40m dipole antenna category belongs to 40M main collection, and get reviewed and rated by amateur radio operators. Never had any issue with RF feedback. I have it up in my attic antenna farm on a rotor and tripod. 2. Hex-beams can be designed in two different variants. It took about an hour and 4 different positioning of the stainless steel wips into the fiberglass base of the hamstick. Gives you a true balanced dipole that prevents RF on coax shield, eliminates pattern distortion, reduces noise pickup and RFI radiation from coax and provides deep dipole end-nulls for nulling out interference. The Z of a whip of the length of a “ham stick” should be only a few ohms, but they are close to 50 Ohms when used as a dipole. Vertical Dipole 12 17. Use of a compound mitre saw makes this job easy. 250 and you wish to have the same SWR at the bottom end of the band for CW or PSK add a metal clip to the junction of the whip and the hamstick on each side. What I have found is that you can generally tune to a good SWR for either the phone part of the band or the digital end of the band but not both. Anywhere from on the ground to 2 feet are possible. shitcan that dummy-load antenna and get up a properly sized dipole Edited to add. Various articles are out there on using short stubs hanging a quarter wavelength out from the feed point on 40 meters, to improve resonance on 15 meters. Solve Virtually Any Restricted Space Problem - 40 Meter Isotron only 22 inches x 16 inches x 15 inches! Click the button below to add the MFJ-2210, 10 Meter Mini-Dipole Includes MFJ-347 & 2 MFJ-1610T Hamstick Antennas to your wish list. com) for our new Dipole Our Dipoles have several advantages over the “ham stick” verticals  TOTAL WEIGHT (INCLUDING CARRYING TUBE) = 12 lbs. Taking down the dipole, and instead, I’ve got a 10 feet long piece of sheet metal that is used on a car body, and thought about using an 80 meter mag mount, placed in the middle of that sheet metal, with 2 18 and a half feet wire radials, going in each direction, and trying to tune that up on all bands. Mount the dipole on your mast and feed the SO-239 with your 50 ohm coax Dec 03, 2015 · When we stop I raise the antenna vertical simply by cranking the winch. Sloping Dipole Antenna 11 16. As expected, the 75m Hamstick dipole has a very narrow bandwidth. Attic Coaxial-Cable Trap Dipole 10-80 Bazooka Antenna Bazooka - WA4EZN Bill's Tak-Antenna - a recommended project!!! Double-L Antenna For 80/160 End Fed Half Wave AA5TB EH antennas G5RV Multi-Band Antenna Hentenna - from N4UJW Horizontal Loop Antenna Construction Isotronant - PA0UNT Joy Stick Antenna K9AY Terminated Loop KC2TX's RX Loops This is the compact dipole used for HF communications on the set of the ABC Television show "Last Man Standing" with Tim Allen. The purpose of this project is to design a simple multiband vertical dipole antenna for 20 meters and above, with a tuner, A Three Band Off-Center-Fed Dipole (OCFD) laying on the roof The following is an approximation of what YOU MIGHT experience if you try this on your roof. So, I thought I would combine those thoughts and create a multi-band Hamstick Dipole. MFJ Monoband Mobile HamTenna Whips make HF mobile operating fun and easy! They're small, lightweight, efficient, and super-easy to use. 10-80 Meter 100W Alpha Loop 100W 10-40M, 20W 40-80 HF Antenna #4 – Hamstick Dipoles In an effort to maximize portability and reduce both setup time and the footprint of my antenna system I bought 80 and 40 meter versions of MFJ’s hamstick dipoles ( MFJ-2240 , MFJ-2275 ). Potential Uses of the Asymmetrical Hatted Vertical Dipole For 75/80 meters their nothing like a full size 1/2 wave dipole. amateurradio) submitted 3 years ago by daisy055KF5SMS [General] I have gotten a pair of MFJ hamsticks for 40m and was going to set it up into a dipole on top of a PVC pipe that I use for 2m and 440. In simple terms, your radio would like to radiate all of its power, but can only do so if the other components cooperate. This is a tried and true method and it works. It performs best if it is isolated from the mast. rotator. On-the-air tests on 2 Meters with KI6O indicated that the transmitted signal strengths of the short dipole were equal to or better than the full half-wave antenna. Check Out Our Scorpion Dipoles, This Dipole system is fully adjustable from 10 to 80 Please contact Gary at Stepper Tune (www. The 'Multi-Four' - a VXO Transmitter for 20/30/40 L'antenne G4ZU. 0”), 7. It is essentially an NVIS (regional low-bands) antenna, and unsuitable for DX work. While this particular antenna is designed for 40 meter NVIS (near vertical incident skywave) use, it can be used on bands above 40 meters with ladder line and an antenna Previously, I had used a 40-meter hamstick but was very much dissatisfied with the performance and the poor bandwidth. hamstick. Working 160M From a Small Lot (and Larger Ones Too) –Half-wave dipole is 260 Ft, to make it easier to tune Jan 02, 2013 · I mean Antennas for portable QRP ops AmateurRadio. Above is my Hamstick dipole on the homebrew tripod. Heavy duty hardware and 2. com PARP Podcast Practical Amateur Radio Podcast PSK31 QRP QSO A Day QSO Party Radio Sport Satellite social media SOTA Uses whole coil so easy to tune by counterpoise which slopes to the ground. Tuning your Antenna - How to set the SWR. 32 pages. Adjust it for resonance. 20/40 Dual Band Dipole This is a simple dipole built for two-band operation that I made for portable use with my 20 and 40 meter QRP rigs. The crowded space above the set required a compact multi-band dipole, and the CHV-5X was selected to solve the problem the minimal space presented. I used the MFJ 971 tuner and made contacts on 40 and 30 meters. Wideband Dipole for Receiving 16 24. as the antenna tuner doesn't do, is to tune the antenna!) However, an antenna tuner at the source makes the transmission line into a tuned feeder. Takes up less space. I've pretuned and marked the whips for the different bands to make it a little easier. The idea of trying to get the virtual length to 88 feet was taken from some work done by the late W4RNL. By invalid@example. Jan 01, 2009 · A Hamstick is a physically short (compared to a 1/4-wavelength) antenna consisting of a helically-wound section and a stainless steel whip that must be adjusted up and down via a set screw. Remember, voltage is a difference between two things. 1”copper tubing) •Portable loops (e. "How sharp are the lobes on a dipole? Does it really make a difference which way the antenna is pointing? " I looked to EZNEC for an answer. diameter. (Jjh***) Yes there is, but you can be very simple and get good performance. QRP ME. They are made with the best materials and top of the line workmanship. The isotron has also been as lesson in reception as "out of tune" markedly affect the reception. NI4L Custom Dipole Norm's Rotors PAR Electronics Princeton Antennas Radio Works Spiderbeam Steppir TAK-tenna Tarheal Antennas Tennadyne T. Also Great For Limited Spaces. You will have to experiment with the folded back ends of the wires to achieve best SWR on the three bands. The Dipole at height, is directional. I set it up with the whips all   10 Jan 2016 Over the next few weeks I will be updating this post with the details on my built, tuning and on air operation of my MFJ Ham Stick Dipole. Usually any wire length that is non resonant, like those shown above, will work with the 4:1 ratio. The antenna came shipped in a nice thin box and was a pleasure to build. 8 MHz) with this dipole, for example, the balun had to be a 4:1 balun instead of a 1:1 balun. Skip to main content. This is a really simple (and inexpensive) way to get efficient 500-watt, 5-band bugcatcher performance from a single old hamstick. With MFJ Mini Dipole Antennas, there's no reason to miss that sked on 20-meters! In fact, you may select any HF band, including 6-meter VHF, and still make your sked while camping, vacationing, away on DX-pedition, or just plain traveling Find MFJ Mini-Dipole Antennas MFJ-2210 and get Free Standard Shipping on orders over $99 at DX Engineering! Dipole antenna projects for the 40 meter band category is a curation of 42 web resources on , Shortened Dipole for 40m, W5VMs Shorty 40 Antenna, The 40 Meter Inverted V Antenna. Dec 30, 2016 · It’s well known that a properly installed vertical antenna has low angle radiation to the horizon, the favored direction of DX propagation. I also wanted it to be light enough to be supported by my light-duty 31 ft Jackite mast in an inverted V configuration. When we consider just an dipole, with no feedline or anything else around it, it's very simple to see that the dipole is symmetrical. Attach the antenna to the antenna socket on the SWR meter using a coaxial cable. An Attic Coaxial-Cable Trap Dipole for 10, 15, 20, 30, 40, and 80 Meters John DeGood, NU3E nu3e@arrl. I found 1/2 to 1 foot to be good spots in the simulations. Normally on a good dipole I just need to tune once on the band and I'm pretty much set. In coarse features from the first table above, the antenna has a 1:4. 2 cm), thick wall PVC sewer, or water pipe, and a way to cut it in either 1⁄4 or 1⁄2 inch (0. Issue tuning 40m Hamstick Dipole (self. A wider coil will tune more easily and exhibit less power loss. Next to this I have a few QRP, mobile and handset antennas and a homebrew 70 cm Quad (read my blog about this). At 65°North, fiddling with something too long Outdoors for band changes, means getting your fingers and hands cold. Tilted Folded Dipole Antenna 16 25. My Experiment in Building a Vertical Dipole Antenna: This project came about when I are so close in bandwidth often a cb antenna can be tuned for 10 meter. Hamstick dipole for 80m. Also available in 6, 10, 12, 15, 17, 20, 30, 40 and 75 meters. Found a suitable plastic electrical box from Home Depot. The counterpoise or radial system ideally must present a low common mode impedance across every operating band. Set the radio to minimum power and to FM or CW mode. The ham stick dipole whips were tuned approximately as follows: 3. I saw an advertisement for the TAK-Tenna and contacted the company to acquire one for the event. Eight hamstick antenna can be mounted to the MFJ-2100 for operation on four bands. May 11, 2013 · Cut the dipole wire to be a little longer than the computed length – it’s easier to cut wire than to extend it! So, perhaps you would cut your 20-meter dipole length to be about 34 feet long, with each of the two segments at about 17 feet. OCF Dipole 7 band 80 -6 Rick on 27th Mar 2018 You are not going to find a better antenna than this one. Jun 22, 2011 · Purpose. M. provides all you need for a lightweight, portable antenna AND saves you money!! Apr 13, 2007 · I had seen articles about using two Hamsticks as a dipole, and I had seen multiple Hamsticks mounted to a common base to use as multi-band. "the prints have made many people so happy that they cried when they received them. Hamstick Dipole Fact Sheet I used this configuration to build my first antenna--two Hamsticks in the adapter, bolted to a 10' high piece of PVC, raised another 3 1/2 feet by putting it on top of a garbage can, and tying the pvc mast to a hook on the back of my patio roof. Skip to the end of the images gallery. The little modeling I've done confirmed it. It's not as broad-banded as a wire but you can attach coils for 80m, 40m, 20m, and others. The name of the game is to get this whip the right length then cut it off. - Rotating Dipole Kit includes TWO HF Stick Antennas and our exclusive "DMOUNT1" Dipole Mount! You pay much less than buying the antennas and mount separately! Choose your favorite Ham Band! The HAMinator Jr. com) makes a universal dipole mount for the advantage that tuning adjustment is not lost when the. If you are planning on using them in a dipole configuration on 75m, get the most sturdy. 20 Meter HF Hamstick Style Mobile Antenna; I purchased this to create an off center fed dipole. These are dipoles made from two helically wound mobile whips mounted back to back. The hamstick vertical dipole. The whips on each ham stick of a pair should be the same length. Performance varies dramatically, depending on mounting and installation, so guaranteeing good results for any of the styles is difficult. 95 It's a dipole It's a vertical It fits in your travel bag! The Buddipole™ is more than an antenna, it's a versatile system for launching your signal. Jul 19, 2016 · Similar to the Loaded Dipole, my 80/40 End Fed Half-Wave antenna is resonant on the two most common EMCOMM bands. Item will ship same day or next after payment is received, depending on the time of received. I'm wondering if it's feasible to hang a 20m inverted V using the hamstick mounts while the hamsticks are still mounted to it, making it a 20/40m dipole. Building an amateur radio antenna for 160 meters is a challenge. This dipole has performed quite admirably in spited of its relatively low height. com (KD8RTT) I have two separate setups for sale. In other words, compared to a good When using "Hamstick" antennas it is usually practical to use a trunk mount on sedans. I have set up one of the std. Générateur deux tons Hendricks QRP Kits. Tripod mounted helical verticals. 125 inch diameter ph-17-7 stainless steel whip and chrome plated brass fittings will give you years of dependable service. MFJ-2220 20 Meter Dipole. Have Yaesu 450 D and trying to tune MFJ 20 meter hamsticks. The only benifit is the phisical size, they have to be elevated the same as a 1/2 wave would, the band width is very small about 20kc (tuner) and the power output would have to be limited to 250 watts pep. Tune to the lowest band available. com is a little boring. AAØZZ EZKeyer II. Apr 28, 2017 · Hamsticks. 6 or 1. The least effective, but most compact antenna would be the HamStick dipole. The mounting stud was $3. Mar 01, 2014 · Hamstick Dipole 20m I have wanted to try a hamstick dipole for a while. I’ll still get some variation of a G5RV up in the spring but this is getting rather fun. This Photo was uploaded by n8mrc. Tune your antenna Don't forget that it is very important to re-tune your radio's antenna after replacement of the Whip! If you need advice or detailed instructions on tuning your antenna for best possible performance be sure to visit CB World's Help center! Product features. 074 and you should hear data. So, the model is confirming the real antenna's behavior. Jun 22, 2018 · The typical dipole adapter for Hamsticks is metal and if a metal mast is used the mast becomes part of the antenna skewing the tuning. The little bracket to make a hamstick dipole used to be sold by Lakeview under the Hamstick brand, but now MFJ sells the same bracket. . I'd imagine you'd need radials with it but maybe that is another option. I also have a 40 meter Hamstick dipole. Bow-Tie Dipole Antenna 13 19. In the tutorial, you'll find out how to make this temporary mount that can be used when going out into the wild or just hanging around your home. phasing box for the 4 hamstick elements - Ham Radio Picture - At MyHamShack you get a free personal web page for your shack - Your Shack. Performs close to a resonant dipole on 30m (and is rotatable) 7. Low wind resistance - less than three square feet of loading 5. 5 SWR at the actual frequency of 14. Yes, this is a balanced antenna, and coax is unbalanced, but I still recommend you solder the coax directly to the antenna. Feed point impedance is high and requires a 4-1 balun. It's performance compared to the dipole has been very impressive. Was very easy to install and tune on my truck. Related Products MFJ-2206, 06 Meter Mini-Dipole Includes MFJ-347 & 2 MFJ-1606T Hamstick Antennas $49. The "hamstick" would be used for a NVIS ARES emergency dipole on 75m and 40m. With this, and two Hamsticks, you can make a Buddipole type portable dipole. Single Band Dipole: in at third equal, it's hard to beat the simplicity and efficiency of a dipole. 3 cm) spreaders. The bottom section of aluminum tubing is 6 feet and the first upper section is a 11 foot section of 1 inch tubing being supported with a 1/2 of pvc tubing in the center that is lock in place with two brass screw if you look closely. Has anyone tried a Hamstick dipole. The shield goes to one wire and the center conductor to the other. Helical whips have been tested to be more than 10dB down on a full sized dipole. Bought a $3 hula hoop from Sports Chalet. So I have a multiband hamstick dipole array! HRBE-I think it was the December, 2007, issue of QST that had an article on the "Octopus" antenna made of 4 pairs of mobile whips for 75/40/20/15 meters. 10 tapered whip Half-Wave Dipole for 11 Meters (by 56FL114, Pete) A Simple and Certainly Working Antenna Solution. Mar 07, 2018 · MFJ-1775 rotatable dipole antenna. Nov 03, 2018 · Another antenna is extremely fast to deploy, doesn’t need an antenna tuner, but is quite fiddly to tune. In contrast, another antenna requires less fiddling, helping to avoid frostbite during winter deployment, but requires a tuner. Wideband Dipole Antenna 15 23. If one should work on 118 MHz (actually 117. The difference between 50 Ohms and the modeled 2 to 3 Ohms is the loss in the coils. For this, you will need either 4 or 6 inch (10. My question are: 1) Is there a pragmatic explanation how it is 73 + j 42. But you should still check it with an SWR meter or the SWR meter in your radio. Right Angle Marconi Antenna 17 26. There were problems with the hamstick dipoles though: they turned out not very good radiators, the one for 20m is better than for 40m, but generally all poor and lossy. 2 MHz. Optimized for transmit power and proven for DX work, the Buddipole™ is the secret weapon used by HF portable operators all around the world. He found that a center fed dipole of 22 or 44 or 88 feet per side was a good compromise for multiband work when used with a balanced feedline and/or a balun along with an ATU. The coil here measures 27 H (micro-Henrys) of inductance. Skip to the beginning of the images gallery After doing some other testing, I was surprise to fine out that I was also able to tune 30 meter, 17 meters. dipole. The RF feed point of a dipole is in the middle, so there’s 33 feet of wire on each side. 3M Compact Cassegrain Motorized Earth Station Antenna is available to buy in increments of 1 Designed for 3. 7% similar) Feedback will be left the same day or next after payment is received. Off Center Fed Dipole – Feed point is 20-33% from one end. Enjoy. The hamstick dipole on 80m is down 15db from the trapped dipole. 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). Two hamstick dipole mounts were bolted together with their center-isolated posts connected together using #12 gauge wire. I saw the mounts being sold on Ebay and was wondering about this. Variable Inductors Find many great new & used options and get the best deals for 2 Each Mfj-1620t 20 Meter HF HAMSTICK Style Mobile Antennas at the best online prices at eBay! Free shipping for many products! Jun 06, 2017 · Interesting video on how to set up and tune a dipole antenna in field conditions. The 40 Meter Isotron Antenna. I would always insulate the dipole adapter and use an effective choke balun right at the feed. HF Mobile Installation HF Mobile Installation, written for Dodropin. How it all came together is in the pictures. Construire un coupleur Z match. If the unblock fails you will need to contact the server owner or hosting provider for further information. The original was for 160 meters and I cannot say a bad word about the antenna. Their dual feature of center and distributed loading lets you radiate efficiently you get more power out for working DX and rag-chewing Find MFJ Monoband Mobile HamTenna Whips MFJ-1620T and get Free Standard Shipping on orders over $99 at DX Engineering! With the 'Hamstick' dipoles I have to unscrew them and screw in the different bands. The hamstick is a mobile style HF antenna for single band HF coverage. It was mis-labeled. While 1/8th wave works reasonably well, better coverage is obtained if the antenna is mounted at about 1/20th wavelength above ground. When an antenna that is one half wave length long has RF energy applied to it at its resonant frequency a standing wave develops on it. Nov 27, 2013 · Hamstick Dipole Experiments. It’s also well known that a horizontal dipole will have excellent low angle radiation too, but only if it’s high enough off the ground. Mar 11, 2019 · End-fed antennas can be tricky to tune properly, especially if your ground radial or counterpoise system is not up to par. I have a 40m hamstick dipole using a MFJ-347 as the center support. This will be the subject of a subsequent post. Hf Radio Dipole Antenna Ham Radio Antenna Diy Tv Tv On A second way to tune the counterpoise is to disconnect it from the antenna, and feed it like a low dipole. At 5 degrees, it's -9dBi, but at 15 degrees, it beats the end fed by a narrow margin with 0dBi, and at 30 degrees, it's +4dBi, so significantly better, and that trend only magnifies Mar 01, 2014 · Hamstick Dipole 20m I have wanted to try a hamstick dipole for a while. Peru 2018 2 Block souvenir world soccer championship russia MNH,MFJ-2220, 20 Meter Mini-Dipole Includes MFJ-347 & 2 MFJ-1620T Hamstick Antennas 650619005820,Chinese Antique Warring States bronze gilded tank pots Home office decoration Mfj-1606t Mfj 6 Meter Hamstick 650619018929 (44. antenna related antenna forum (off site) publish your antenna project all band "ugly" balun antenna programs de ve3sqb qy4 quick yagi program qrz design downloads k5at antenna links wave propagation antennas "the easy way" get a good ground! arrl technical info service how to use an antenna tuner basic yagi design decimal conversion chart This calculator is designed to give the horizontal length of a particular dipole (including Tees) antenna, or one side of it, for the frequency chosen. The Isotron won't tolerate that so you must tune it up right and, then look out. 2/19/12 What is a ham to do when living in a home with antenna restrictions? After experimenting with stealth wire antennas, I decided to focus my energies on an effective and enjoyable HF mobile installation. Flag Image for Inappropriate Content. One of the easiest antennas to build is a traditional half-wave dipole. The price is right and every hamfest I’ve been to has a vendor selling them inexpensively. For 2 meters and 70 centimeters I have a Diamond X30 antenna, also high in the attic. I've also used a Comet UHV-6 inside. I know that you're not supposed to use a Hamstick on a band different from the one it's designed for. Enter one (only one) value, the desired frequency or the antenna length in any length field. The next issue is trying to independently tune the two halves of your Hamstick dipole. A dipole antenna (two wires, each 1/4 wavelength, travelling opposite directions) is between 50-70 ohms for its center frequency and can often be used as-is. The long, small diameter coils made with small gage wire cause most of the loss. Vibroplex© W6LVP Loops Wellbrook Communications ZeroFive Antennas Usually arranged in an inverted vee configuration for portable use as this allows a single support to be used. Also, hamstick dipoles I have are low power (125W max). Antenna is light weight but works well. Please tell us how this content my violate our Terms of Use Ordered this 80 meter whip. Here is how I managed to get pretty decent results with a homemade antenna. Product Review: MFJ-1775 6-Band Rotatable Mini-Dipole Phil Salas – AD5X Introduction When I received the 2006 MFJ catalog, their new MFJ-1775 compact dipole caught my attention. A report on the Amazing 75-Meter Hustler Dipole At AI1V. 4 Band QRP Go Pack de TEN TEC. Station are a few db down from a full half wave dipole signal. Wire lengths for the 4:1 ratio in models 4130, 4132, 4134, 4932 and 4935. Tuning is best done with an antenna analyzer such as the MFJ-259. Ideal use is a temporary or portable type of use. There ain't no such thing as a free lunch. Mini-Dipole, 6 Meters. That got me thinking . The 'Sticks' cost about $15 each (2 per dipole per band (80, 40, 20)= $90) + $10 for the adapter = $100+/-. I made a Hamstick Dipole for 75 meters. MFJ Mini-Dipole Antennas MFJ-2210. Mar 13, 2019 · Leave the folded driven element as high as possible on the posts and use the reflector wire height to “tune” the antenna. 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. Clothes pole pulleys but no rope, Hamstick dipole by ingineer — 46 Clothes pole pulleys but no rope, Hamstick dipole by ingineer — 46 Inverted V dipoles (or any dipole for that matter) work well as a DX antenna when they are 1/2 a wavelength or more high. So I only have room for a hamsticks. The big pointer on the knob allows me to tune the variable capacitor while keeping my capacitive hand sufficiently away from it. I put up a simple 160 meter Inverted-Vee configuration dipole with the center at a about 45 feet. Oct 22, 2013 · A loading coil for 80m. With difficulty, it could tune 15 and 17 meters, and my LDG tuner could force it to work on 80 meters, but the amount of energy actually going out the antenna was pitifully small. Multiband Tuned Doublet Antenna 14 21. The antenna pictured at the top of my FAQ page is the 2 meter Slim Jim antenna. ? To save some space I was thinking about setting one up for 80 meters. In preparation for a quick set-up HF deployment for an ARES drill, I decided to finally put together the pieces of a downsize dipole that I had been planning for a few years. This would be a temp, portable, emergency antenna. Discover ideas about Ham Radio Antenna. 80m dipole, 450 Ohm window line to the ground, 4:1 balun, then coax into the house. as a dipole will tune or if I'm better off with one stick and a counterpoise. Apr 19, 2016 · If your attic is the length of the house, you can do a 20m half wave dipole (about 33 feet) and get good reception. steppertune. HF Antenna #3 – Folded Skeleton Sleeve Dipole Aug 06, 2015 · An End Fed Half Wave Length Antenna is a variation of the much more common half wave length dipole antenna. In fact, being just 40 kHz away from resonance means an SWR of 4 or more instead of under 1. Normally on a good dipole I just need to tune once on It will switch to PKT mode, transmit a carrier, tune the tuner, then restore the radio to the previous mode! 2000 memories cover 160 through 6 meters. The All Band HF Dipole was constructed and refined for use with my Z-Match Antenna Matching Unit at my previous residence in Melbourne, Victoria from 2004 - 2007 Despite the space limitations of a suburban block I wanted an antenna that would be suitable for all the HF amateur bands, including the so called WARC bands and ideally including the 160 metre band. 95 at Durham Radio, and I reused the coax from the original vertical dipole. You might add a related video or a picture or two to get people interested about what you’ve written. Uses whole coil so easy to tune by counterpoise which slopes to the ground. Hamstick-type antennas are least expensive, and screwdriver antennas are most expensive. This calculator is designed to give the vertical length (height) of a particular whip type antenna, or the frequency of it. I prefer this to any mobile antenna and is much easier to setup than the full sized dipole I used previously. Shortened / loaded 40 meter dipole for attics This morning, I removed from the loft, a pair of nested dipoles for 40 and 20 meters fed with one coax feeder. This was fine with the higher bands, 10 m, 15 , 17, 20 m. Its basically a 44-foot dipole made from speaker lead and does need a tuner. There is minor interaction between the whips, although the #12 gauge wire looks slightly capacitive. Sep 23, 2017 · Dipole antennas are some of the simplest antennas to build in addition to being very efficient and solid performers. You will need to suspend it but it can also be used as a long wire with your tuner by shorting out the feed end if you only have a single tree to support the end. Click on Calculate and the optimum length for that combination will be displayed in feet and inches. Amatuer Ham Radio Antennas . This kit Includes 2 single band antennas and a FREE K1CRA DMOUNT1 to make a lightweight, portable or permanent Amateur Radio Antenna. 9% sure that antenna, mounted directly to the 857 will have really bad SWR ( reflected power) tune around 14. 15. Bow-Tie Dipole Antenna 14 20. My third (or second) dipole is an inverted V for the 15 meter band. Hamstick Dipole Is A Practical and (www. Am considering getting my license again after raising kids, and wondering if there is any point in HF operation besides local chats — that is, what is propagation like when there are no sunspots? The picture to the right shows the lower coil which is for 80 meters, the upper is 40 meters. It was incredibly heavy and very quickly became a sagging and corroded eyesore on the corner of my house. All information, images, and documents on this website are the sole property of MFJ Enterprises, Inc. The VE2DPE 160 Special! A report on the Amazing 75-Meter Hustler Dipole At AI1V. My Prototype of the Mastless 40m Dipole. The performance of this small aperture dipole system is surprising. The 80m hamstick is extremely lossy on 80m and using it on the higher bands will probably result in extreme losses also. 20 meter Hamstick dipole on 20 foot mast. By rotating it 90 degrees you will have full 360 degree coverage. Our motorized antennas and stainless steel mounts are designed with the most avid HAM radio operator in mind, as well as commercial applications. tune hamstick dipole

b8wlz, quyvsucl, spfi, hzvkml, 4jhopoz, 1h1bo, ibqdiy, hz4fc2w, pzam, ex9h, ot,