Don't know - but it is really easy to measure. I would assume if your
RF voltage is less than the voltage required to damage a transistor,
you would be OK. I don't know that exact level, but I would guess
that less than one volt is probably AOK.
My levels were down in the millivolt range (5-50) except for when I
tx on 40 with a KW, when I got around 300 MV. Hasn't hurt me yet, but
I cannot operate within 13-15 KHz of that 40M harmonic on when I am
also on 20.
GL
Jerry W4UK
At 00:34 7/26/2006, you wrote:
>Hi Jerry et al
>
>I have seen the meter on the antenna tuner on the 2nd radio deflect when
>transmitting on radio 1. It wiggles a little if I am using the amplifier.
>I assume that must be RF coming back down the feedline. Probably not good,
>huh? 73
>Tom W7WHY
>
> >I recommend you actually measure the RF voltage coming back >on the
> >"other" coax.
>
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