Antron A99 VS EFHW (Homebrew) Base CB Antenna

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  • Опубліковано 1 кві 2020
  • A quick video I knocked up to see how the Antron 99 compares with a Homebrew 49:1 EFHW (End fed half wave).

КОМЕНТАРІ • 30

  • @NICKGAR7
    @NICKGAR7 2 роки тому +1

    Great video. Simple, well explained. Something I keep thinking about. I have all the items in my collection. Sometimes too much gear! Catch you soon
    Nick

  • @adonikam1
    @adonikam1 2 роки тому +2

    Glad I found your channel, EXCELLENT VIDEO. I SUBSCRIBED.

  • @stuarthall3874
    @stuarthall3874 4 роки тому +1

    Thanks for the video. It was clear and simple. I am inspired to try something like this for portable operations.

    • @benm1mlm846
      @benm1mlm846  4 роки тому +1

      Thanks Stuart, I use the efhw out portable often 👍

  • @rivit90
    @rivit90 2 роки тому +1

    great video , i also use a 49:1 transformer a wire and a dx commander 10 meter pole , Its cut for 20 meter band but offers a very low swr on the 11 meter band , It really gets out on the 20 meter band , 10 meter band and 11 meters . I did have a imax 2000 up but this wipes the floor with it

  • @lyndonwebber1389
    @lyndonwebber1389 3 роки тому +1

    Love them 5 stars good looking radio

  • @rondellschuyler7074
    @rondellschuyler7074 Рік тому +1

    I would use a MFJ 915 ferrite blaun with the Antron 99, the homebrew and any antennae. Helps reduce stray RF and white noise.

  • @alvarogaitan2529
    @alvarogaitan2529 3 роки тому +1

    terrific job 73 my friend from kb2uew

  • @antenaseinterfacescb
    @antenaseinterfacescb 2 роки тому

    Nice job. I homebrew one with a ferrite of an old Tv, 9:1 work's fine with 4,40 meters wire, with low Swr from 7 MHz to 28 MHz.

  • @VicGreenBitcoin
    @VicGreenBitcoin 2 роки тому +1

    I still have the Antron 88, still works fine with his age..

  • @pauladamides8325
    @pauladamides8325 4 роки тому +2

    was there any counterpoise or choke used with the EFHW?

    • @benm1mlm846
      @benm1mlm846  4 роки тому +1

      Hi Paul, there is no counterpoise or choke used on this efhw. 👍

  • @americaswayout4489
    @americaswayout4489 3 роки тому

    You said they are about the same length? Have you checked the SWR for other bands, like 6 meters etc, just wondering I need something for 6 meters, a half wavelength on 11 meters is about 18 feet with a harmonic of doubling that putting it near 6 meters? 27 x 2 =54 If you could check it for 6 meters, I would appreciate it? Just a thought. I have seen some verticals with a 6:1 transformer but not sure about 49:1 but you just proved it will work?

    • @benm1mlm846
      @benm1mlm846  3 роки тому +1

      Ive not tried it up on 6m. I don't think the FT240-43 ferrite are very efficient at 50mhz , but its gota be worth checking out. Will let you know when I do..

    • @benm1mlm846
      @benm1mlm846  3 роки тому +1

      Sorry its taken so long , checked it on 6m for you using the 10/11m halfwave wire ..
      ua-cam.com/video/x9wGM-tUvtg/v-deo.html

  • @bassplayer3974
    @bassplayer3974 8 місяців тому

    Just visiting, thanks. In short a dipole a dipole

  • @fsjonsey
    @fsjonsey 3 роки тому +1

    Any idea on the correct wire length for the USA CB band?

    • @benm1mlm846
      @benm1mlm846  3 роки тому +4

      Hi, A half wave length would be 5.47 metres or 17 feet 11 inch. For 27.405 if memory serves is ch40 . It has a good band width . If you cut slightly longer then fold back instead of cutting to get the lowest Swr.

    • @fsjonsey
      @fsjonsey 3 роки тому +2

      @@benm1mlm846 Thanks!

  • @richardfryer8646
    @richardfryer8646 2 роки тому +1

    ... the T200-2 iron powder core has better efficiency on the 'higher bands'... if you look at the permeability graphs the #43 core mix maxes out at around 10mhz... check it out and try again with a #6 ir #2 iron core material

  • @timmack2415
    @timmack2415 3 роки тому

    I'll bet three 1/4 wave radials would make the end-fed quite a bit better.
    Also 10 ga. Wire would give you less radiation resistance.

  • @n0vty873
    @n0vty873 2 роки тому +2

    th A99 is an endfed half wave antenna

    • @RF_Burns
      @RF_Burns Рік тому

      Yes, but slightly different in that it's a half-wave over a quarter-wave matching coil, fooling the radio into thing that it's seeing a 3/4 wave colinear.

    • @n0vty873
      @n0vty873 Рік тому

      @@RF_Burns No, it is simply a halfwave antenna with a matching coil to match it to 50 ohm coax, no gibber jabber magic bs

    • @RF_Burns
      @RF_Burns Рік тому

      @@n0vty873 Yes, that's what I said - electrically a 3/4 wave colinear to show 50Ω instead of 2450Ω, but physically a halfwave with performance characteristics to match. Who said anything about jibber jabber magic?

    • @n0vty873
      @n0vty873 Рік тому

      @@RF_Burns only a half wave, you keep making it out to something it can not be

    • @RF_Burns
      @RF_Burns Рік тому

      @@n0vty873 I'm saying that it IS a physical halfwave that behaves (electrically not physically) like a halfwave over quarter-wave collinear, in order to get the same 50Ω-ish impedance match of a true 3/4 wave. What is it about these facts that you don't like?

  • @rcc3244
    @rcc3244 3 роки тому

    That's what I thought. I would rather use a coil .