A Short End Fed Antenna (

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  • Опубліковано 18 січ 2025

КОМЕНТАРІ • 14

  • @jamesgeorge1709
    @jamesgeorge1709 Рік тому +6

    You can use a 40meter efhw with a 110uh loading coil on the far end and it will add aprox 6 1/2 ' to the ant or about72'. do not put the tower end close than about 3 ft because it will try to couplee with the tower. 73 from ki0ad/Jim

    • @montybates5176
      @montybates5176 Рік тому

      Yes, he mentioned to stay away from the tower about 3 ft. At about 10 minutes into the video

  • @ButtonsKing
    @ButtonsKing Рік тому +4

    9:18 If it resonates on a higher frequency, it is too short and YOU HAVE TO ADD SOME TURNS to the coil.

  • @weshawkins7165
    @weshawkins7165 Рік тому +2

    Yea, I got UA-cam to work. I had just gotten my ARRL 10-40 meter EFHW built and up in a tree ten days ago. Didn’t get it hooked up to the radio yet because we have been getting hit with snow storm after snow storm for the last 11 days. About five feet of snow. To busy plowing out every day.
    Your diagram looks exactly like the way I did my EFHW except I put the UNUN up at the pulley because my house is on the upper end of the slope of my property and I have a big cedar tree twenty feet from the house.

    • @joeb3300
      @joeb3300 Рік тому

      I bought the same antenna two Field Day's ago and have had a lot of success with it. I then replaced the ~65' wire with a 132' wire and have been using it on 80M, 40M, 30M, 20M, 17M, 15M and 10M, mostly at the 'digital end' of those bands. The best antenna per dollar that I have had. My transceiver has a built-in 3:1 tuner which is helpful on some of those bands. Good luck!

  • @bassangler73
    @bassangler73 Рік тому

    Prayers sent for your hearing.....73

  • @ericdee6802
    @ericdee6802 Рік тому

    Great video Dave!!!

  • @donschneider7252
    @donschneider7252 Рік тому

    Thanks Dave! I'm going to do something like that when the weather; improves probably to a very tall big tree. Will have to consider movement and strain relief as we get high winds on occasion. So appropriate to my needs, 73s KI7RJS

  • @spysweeper
    @spysweeper Рік тому

    Hi Dave! I have a box of 75 ohm cables with BNC male ends to it and I was wondering about making a wire antenna our of it-- do you think it would work?? conceptually, I suppose it can be a centerfed folded dipole as well if the shield and center conductor was soldered together... I don't know if it would be a good idea and if it works, what would be the best configuration for it? If I could make a decent multiband HF of it that would be great! I certainly have more than 500 ft of it to couple in 50 ft lengths... maybe a rhombic antenna configuration?

  • @stephensuter5016
    @stephensuter5016 Рік тому

    thanks!

  • @mikeriverajr4447
    @mikeriverajr4447 Рік тому

    Hi Dave i a new to the hobby i have some questions i cant seem to find a clear answers to if you don't mind?
    is the rule of 3 miles to the horizon for 6 foot person is that set in stone?? are there ways to get pass this with cb/murs/gmrs bands besides additional height or is height and only is the answer ?
    presuming this horizon is set in stone and all things being equal among the different freqs [same watt, same gain antenna etc] are the only differences between frequency there ability to penetrate density and get distance per watt of power to the predetermined height restrain limit of the horizon for example 2 watt murs vs cb vs gmrs at same height?
    AND THE GRAND FINALLY QUESTION
    where is the height calculated exactly on the the antenna?? For example if you have a vertical half wave 11 meter aka 18 foot long on the ground and a gmrs half wave 1 foot antenna that is 17 foot off the ground, there both at 18 foot to the tip. Is the grms antenna in theory higher even tho there both at 18 feet? i ask because the cb is still on the ground yet the grms is 17 feet off the ground . would this mean its better to vhf as you can gain more height with less height versus a longer wave length?

  • @cornbread-KO5RN
    @cornbread-KO5RN Рік тому

    TGIF DAVE

  • @glenmartin2437
    @glenmartin2437 Рік тому

    Thank you, Dave.
    A good review. N0QFT