| Author |
Message |
    
Jerry Bryant
| | Posted on Tuesday, October 02, 2001 - 2:13 pm: | 
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I posted a mod I did to my Antron 99 a while back,in which I added 6, 9 foot speaker wire sections to the bottom of the antenna as a ground plane in a 90 degree angle configuration. I've further experimented with it by adding aluminum pipe to the radiator but this just lowered the resonant frequency by about 5 Mhz.Has anyone tried purchasing the Firestick replacement top whip? I had a friend in the past add a 102 inch whip and he had good results. Well my aluminum experiment didn't work, but the home made ground radial solution worked like a charm.I've lately been playing arround with stepping up the voltage of my transmitter with homemade inductor coils and have been successful. I'm a disabled American Veteran and have tons of time to tinker with various aspects of this radio hobby.If someone out there has been successful in building a home-brew amplifier please let me know and I'll start a future attempt.Catch you all on the radio.J.C.B. |
Magyver
| | Posted on Saturday, January 05, 2002 - 1:04 am: |
|
Not an Antron But....
I have a shakespeare that the top fiberglass half shattered into pieces. I screwed in a 102" steel whip but the SWR's were high on 1. I added about 6, 1" extenders and that brought 1 and 40 even. Now on 19 SWR's don't even move the needle. Gotta love those 102" steel whips. |
Phil Obenour
| | Posted on Saturday, January 05, 2002 - 3:50 am: |
|
Jerry, I used to build amps using 'sweep tubes' and transformers from color TV's and built a few solid state units for mobile use. Send me an e-mail if you need info, they aren't really hard to build, I even built a 2-tube unit using a WW2 Aircraft 'Dyna-motor' for the High-voltage.. it rested between the seats in my GTO and looked scary with the tubes out in the open! : )
-Phil |
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