End Fed Random Wires Really Rock!
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- Опубліковано 7 сер 2024
- Here, I briefly discuss my End Fed Random wire, made with 72 feet of 18 gauge copper-clad steel from Wire Man, with the 9:1 UnUn from Nelson Antennas (Ebay). I use 24 feet coax as my feedline (and also serves as the counterpoise). I made a coaxial choke out of an FT-240 ferrite and just a few turns of RG8X coax.
These antennas operate on the principle of finding non-resonant lengths of wire to work as many ham bands as possible. Consequently, you do need to use an antenna tuner to use this antenna. I use the built-in ATU on my Yaesu FTDX101D, and it tunes 6 meters through 80 meters.
This has been the best yield for me of any wire antenna I have built or bought. I routinely received great reports on all bands on FT8, frequently exceeding the report I send the station. Don't underestimate the EFRW!
Total outlay of cash: $33.00 for the 18 gauge copper-clad steel wire from WireMan, $42.00 for the 9:1 unun from Nelson ANtennas on Ebay, and $42.0 for a collapsible pole from Amazon. Either end of the wire may be mounted a few short feet from the ground.
More info available:
www.hamuniverse.com/randomwir...
• End-fed antennas with ... - Фільми й анімація
I remember older hams just saying to "Get as much wire in the air as you can and see what it does." Back then, we didn't use an UnUn to feed the antenna, we just ran a single wire to a tuner in the shack. Those were fun days.
72 feet , 9:1 unun, 24 ft coax&choke.
Good practicle experiment.
Thanks for your time to post this, your efforts will save others a lot of time
Take care
73
There's nothing like an end-fed inverted V!
Good vid, thank u👍🇺🇸
My setup is a 9:1 UNUN to a 35ft. wire fed by 50ft. coax being used as a counterpoise. At the shack a 1:1 UNUN common mode choke. Antenna loads from 80-10 meters. Great antenna.
I use a 4:1 current balun on everything that isn't resonant, lets the tuner have an easy time.
I thought "End Fed" was going in a whole different topic direction.
Yeah sorry it’s not a “how to.” But thanks for the comment anyway.
Ending the Federal Reserve came to mind first, then I remembered Hams did some end fedding too. lol
You can make contacts with any tunable piece if metal. Long random wires have weird radiation patterns that vary quite a bit with the band and orientation of the wire (sloper, flatop or vertical). I put up a 41ft random wire antenna (sloper) for fun but find that performance is mediocre. I could put up this antenna as a vertical but it is too long for low angle radiation on 10 and 12m for sure. There are a lot better antennas that are still easy to put up. Model your antenna in EZ-NEC you will see.
This is true, of course. But pound for pound, the ability to tune every band and get the power to the antenna is pretty good for someone who wants multi-band capability with a decent NVIS signal on 30, 40, & 80, with DX ability on 10, 15 & 20. I use a "CB" vertical which easily tunes 10, 12, and 15 meters with great results. Sometimes the lowly undervalued antennas do more than we think.