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END FED “RANDOM WIRE” HF DIPOLE 9:1 ANTENNA. STAINLESS/ 80-6 METERS 150W PEP

By |July 23rd, 2026|

PLEASE READ ENTIRE LISTING!!!PLEASE LOOK AT ALL PICTURES!! HERE IT IS! AFTER 100'S OF REQUESTS AFTER OVER 4000 OF MY SOLO 9:1 UNITS SOLD HERE IS NOW THE COMPLETE ANTENNA UJM-150-50WIRE LENGTH IS APPROXIMATELY 50 FEET! YES, ONLY 50 FEET!For Stealth, the wire is high quality MARINE 18AWG fully tinned insulated stranded copper wire. Marine wire is tough and made for harsh environments END FED "RANDOM WIRE" FOR 80-10 METERS WITH ONLY RADIO & TUNER, MANY PICKY BUILT IN RADIO TUNERS WILL TUNE THIS ANTENNA PERFECTLY ON 80-6 METERS!! Made in the USA by a (((TAX PAYING))) HAM for Hams I do have just the 9:1 UNUN boxes listed and have sold many thousands of them. After many requests, here is a complete unit offered for my customers.ALL STAINLESS ANTENNA HARDWARE MODEL so there will never be an issue with components starting to rust. Tiny and light weight but ready and capable to put in work! This unit is encased in a 1"x 2"x 3" ABS box! And comes with a VERY HIGH QUALITY SO-239 connector. Does your HOA try to deny you the ability to have antennas up? Are you looking for a quick and convenient way to run a portable (end fed) dipole without needing 2 or 3 supports or several antennas for portable or permanent operation? The UJM-150 may be just for you.WHY MY MATCHBOX IS DIFFERENTI have a unique toroid, wire and wind combination that I customize for my units. After many YEARS and many dollars spent in R&D I finally found the best working combination of toroid and wire size, and wind configuration and type. Simply put, my unit is NOT a "google how to" and throw together unit. I take pride in my work and products and make them the best I can. This unit will allow you to run an end fed dipole (1 single wire) on most bands with just a single wire and radio+tuner. This unit is made to tune well with even picky built in radio tuners. Every factory radio we could find with a built in tuner could tune this antenna perfectly on 80-10 meters and most can tune it perfectly on 6 meters as well. I advertise this as an antenna for 80-10 but I consider that a minimum with many built in tuners capable of a great match on 6 meters as well. (your setup will determine this)! My matchbox is made with a larger toroid than most here and solid copper wire allowing more power to run through it. You can run from QRP to 150Watts PEP and 60W digi modes. This is accomplished with a trifilar wound unun (not balun) transformer at a 9:1 ratio. How this works is really quite simple. Running a standard dipole with 2 elements has about a 72 ohm feed point at the center but end feeding a dipole will result in impedance levels from 1800 to 5000 ohms! That's way too much for a tuner to handle right? Well that's what this matchbox takes care of. Simply put it brings the impedance down to levels that tuners can deal with and the wire length shipped with the antenna creates a good match for all band tuning. Most users will find no rf issues and find no rf choke is needed. That said, using a GOOD rf choke is always good ham practice and I do have my own designed choke/s with full choking specifications listed with the one authorized distributor for them. It can be found by putting the eBay item number in the eBay search bar. That number is 264946030545HOW TO DEPLOY First off you will need a tuner! These are made to be used with an antenna tuner. The bands you can tune up and work depends on your tuner. Use at least 16 feet of coax from the box to the tuner! The box uses the shield of your coax so the 16 feet or more is good. Do not be afraid of longer coax folks, this is HF and coax loss is very low. Longer coax is recommended because these antennas use the shield of the coax as a radial so to speak. Running 50, 60, 75 or 100 feet of good coax is NOT a bad thing. I highly recommend deploying this antenna in a simple "sloper" style configuration. These boxes like to be close to ground level. It is recommended to secure the box down (via eye-bolt lug) within 5 feet of ground level and run the antenna element in a slope upwards and out from the box with the far end height recommended to be from 20-30 feet (6.6 to 10+ meters) high at the far end. You can experiment and deploy in may different fashions, zig-zag, inverted "L", vertical etc but sloper is recommended. RADIATION PATTERNWhile these are VERY omni directional, you will see that in a sloper you will get slightly more gain in the direction of the antenna element. For instance, if the antenna element is running east to west you can expect a bit more gain in the east and west. Recent customer review (6-1-20) New message from: griley53 (468) Shane, ok, here is what i wanted to post: I have been dealing with Shane for the past month now about an antenna i bought from him. He is, without a doubt, the BEST when it comes to Customer Service. I needed some help about correctly connecting and tuning the antenna and he sent VERY Fast responses and was a HUGE help. a BIG "Thank YOU" Shane. 73, Gary KT6SKR in Oklahoma You can Youtube Nelson Antennas or Nelson End Fed and find customer reviews. Froo www.froo.com | Froo Cross Sell, Free Cross Sell, Cross promote, eBay Marketing, eBay listing Apps, eBay Apps, eBay Application

49:1 UNUN IMPEDANCE XFORMER FOR END FED HALF WAVE ANTENNA. UJM-49-1

By |July 23rd, 2026|

I also have 9:1 unun Random Wire Matchboxes that are designed to be used with a tuner on all bands with a random length wire as well. The user can build the antenna they wish. That being said, you can install this antenna: horizontal, vertical, inverted "L", zigzag and more.

***LIMITED RUN*** The Legendary Nelson Antennas Roll Up Slim_Jim 144-148MHz

By |July 23rd, 2026|

The coax will be 10 feet of tiny RG-174 coax with a built in RF choke at the feed point. All antennas including this one are designed and tuned to be deployed in an OPEN area. Hanging the antenna free from obstructions is very important.

HF End Fed Dipole UJM-EFHW-40-10 200W 40-10m / NO TUNER NEEDED!! / 65 ft long

By |July 22nd, 2026|

eBay's Top Portable Antenna Seller NO TUNER NEEDEDTHIS IS THE UJM-40-10EFHW This antenna is made by using a matching network consisting of a 49:1 bifilar wound toroid with the needed capacitance added for wide, multi band, no tuner needed operation. PLEASE LOOK AT ALL PICTURES TO SEE THE DETAILS AND CRAFTSMANSHIP! I NOW OFFER A 75/80 METER RESONATOR KIT FOR THIS ANTENNA THAT ONLY ADDS APPROX 6 FEET TO THE ANTENNA LENGTH! FOR THOSE IN TIGHT SPACES THIS IS A GAME CHANGER. That kit is eBay item number 203336978970I also offer a full length 80-10 meter version of this antenna. Click on my items to see that antenna. This sale is for a true, half wave end fed antenna for 40-10 metersThis antenna is rated at 200W PEP and 75W digital/CW@50/50 duty and is PERFECTfor both portable or permanent installations! This antenna comes complete with 65 feet of stealthy but strong MARINE fully tinned 18AWG insulated stranded copper wire, dogbone insulator and all Stainless Steel hardware on the matching box. Marine wire is tough and made for harsh environments. The box is sealed with a foam gasket as well. Without a tuner the antenna works 40,20,15, 10 and usually 12 meters as well. 12 meters will depend on your setup.With a decent tuner you can also tune 30 and 12 meters and 17 meters. You cannot tune 80m on this antenna. That 80-10m version will be in one of my other listings for a few more dollars and is 130 feet long. One of the great things about this antenna is that the height you mount it will have a smaller affect on SWR than other antenna types. This gives you a large flexibility in your installation. One huge advantage of these antennas is that they typically have very good "ears" with a low noise floor! As you can see from the picture the antenna box does come with the mounting eye-bolt wired for optional ground however with this type of antenna adding a ground or counterpoise will have little to no affect on the antenna tuning and is not needed since it's built as a DC ground potential antenna already. Also, NO RF CHOKE NEEDED IN MOST INSTALLATIONS! That said, a rf choke is always good practice and I do have my own designed choke/s with full choking specifications listed with the one authorized distributor for them. It can be found by putting the eBay item number in the eBay search bar. That number is 264946030545 Another advantage of this antenna is the endless ways you can deploy it. I recommend a simple sloper installation and you can mount the box close to the ground with your element sloping upwards. When installed as a sloper you will see fantastic results if you can get the far end of the element up to 25' or more. That being said, you can install this antenna: horizontal, vertical, inverted "L", zigzag and more. The screenshot pictures shown above on the Rigol Spectrum Analyzer and SWR at the radio are shown with the antenna in a sloper configuration with the box fed at 5 feet and the far end up at 27' from the ground fed with 75' of LMR400 coax. Your unique installation may vary those reading a bit. This is a very simple antenna to install and no extra instructions are necessary but if you do have any questions please feel free to ask. Simply secure a cord to the mounting eye-bolt and stretch out your element for your installation and secure it. Great for ALE HF-link stations, NVIS, MARS, ARES, EMCOMMI have produced and sold more than 15,000 antennas here on eBay alone and still maintain a 100% positive feedback for a reason. everything I make and send is made by myself, no help allowed and only made as if it were as my own antenna. I feed my family this way and so my customers ALWAYS get the highest level of quality and customer service I can provide. To put it simple, my livelihood depends on it. If anyone has an issue at all, please just send me a message through eBay and I will take care of you as I have done on here for over 7 years now. I also have 9:1 unun Random Wire Matchboxes that are designed to be used with a tuner on all bands with a *random* length wire as well. PLEASE LOOK AT MY OTHER LISTINGS!73KD8UJM

HF End Fed Dipole UJM-EFHW-80-10 200W 80-10m / NO TUNER NEEDED!! / 130 ft long

By |July 22nd, 2026|

eBay's Top Portable Antenna Seller NO TUNER NEEDED THIS IS THE UJM-EFHW-80-10 This antenna is made by using a matching network consisting of a 49:1 bifilar wound toroid with the needed capacitance added for wide, multi band, no tuner needed operation. PLEASE LOOK AT ALL PICTURES TO SEE THE DETAILS AND CRAFTSMANSHIP! This sale is for a true, half wave end fed antenna for 80-10 meters This antenna is rated at 200W PEP and 75W digital/CW@50/50 duty and is PERFECT for both portable or permanent installations! This antenna comes complete with 130 feet of stealthy but strong MARINE 18AWG fully tinned insulated copper stranded wire. Marine wire is tough and made for harsh environments. Nylon UV dogbone insulator and all Stainless Steel hardware on the matching box. The box is sealed with a foam gasket as well. Without a tuner the antenna works 80,40,20,15, 10 and usually 12 meters as well. 12 meters will depend on your setup. With a decent tuner you can also tune 30 and 12 meters and 17 meters. I do also have a 40 thru 10 meter version listed for sale and is only 65 feet long. One of the great things about this antenna is that the height you mount it will have a smaller affect on SWR than other antenna types. This gives you a large flexibility in your installation. One huge advantage of these antennas is that they typically have very good "ears" with a low noise floor! Please note, I used the same pictures for this listing as my 40-10 meter version so the 80m SWR is not shown but just as good as others. As you can see from the picture the antenna box does come with the mounting eye-bolt wired for optional ground however with this type of antenna adding a ground or counterpoise will have little to no affect on the antenna tuning and is not needed since it's built as a DC ground potential antenna already. Also, NO RF CHOKE NEEDED IN MOST INSTALLATIONS! Antenna uses a standard SO-239 connector to accept your coax with PL-259 connectors. Most users will find no rf issues and find no rf choke is needed. That said, using a GOOD rf choke is always good ham practice and I do have my own designed choke/s with full choking specifications listed with the one authorized distributor for them. It can be found by putting the eBay item number in the eBay search bar. That number is 264946030545 Another advantage of this antenna is the endless ways you can deploy it. I recommend a simple sloper installation and you can mount the box close to the ground with your element sloping upwards. When installed as a sloper you will see fantastic results if you can get the far end of the element up to 25' or more. That being said, you can install this antenna: horizontal, vertical, inverted "L", zigzag and more. The screenshot pictures shown above on the Rigol Spectrum Analyzer and SWR at the radio are shown with the antenna in a sloper configuration with the box fed at 5 feet and the far end up at 27' from the ground fed with 75' of LMR400 coax. Your unique installation may vary those reading a bit. This is a very simple antenna to install and no extra instructions are necessary but if you do have any questions please feel free to ask. Simply secure a cord to the mounting eye-bolt and stretch out your element for your installation and secure it. Great for ALE HF-link stations, NVIS, MARS, ARES, EMCOMM I have produced and sold more than 15,000 antennas here on eBay alone and still maintain a 100% positive feedback for a reason. everything I make and send is made by myself, no help allowed and only made as if it were as my own antenna. I feed my family this way and so my customers ALWAYS get the highest level of quality and customer service I can provide. To put it simple, my livelihood depends on it. If anyone has an issue at all, please just send me a message through eBay and I will take care of you as I have done on here for over 7 years now. I also have 9:1 unun Random Wire Matchboxes that are designed to be used with a tuner on all bands with a *random* length wire as well. PLEASE LOOK AT MY OTHER LISTINGS! 73 KD8UJM