[AMRadio] GK500 OTA almost


Rob Atkinson ranchorobbo at gmail.com
Fri Jan 6 05:53:38 EST 2017


Glad you got it working Colin & hope to hear you on the air with it.
Hope the audio is smooth sailing also.

73

Rob
K5UJ

On 1/5/17, Collin <n4tua at aol.com> wrote:
> Great Day, we got it. I believe the GK500B is behaving now. It was parasitic
> oscillations and Rob hit it right on. I should have tried that first. Took
> two 240 ohm two watt carbon resistors from the junk box. Didn't have any 200
> ohm. Paralleled them and wound 4 turns of wire around and replaced that
> copper strap with my new lash up. Now she tunes very smooth and predictable
> with NO arc/flash and no wild uncontrollable plate current. There may well
> be other GK500s out there that would benefit from this simple and cheap
> modification.


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