OOOpssss I guess 30 dB is too much attenuation for this (too low RF voltage
to be rectified) , well maybe 20 dB would do the job?
Horta
PY2NI
----- Original Message -----
From: "Hamilton Horta - PY2NI" <py2ni@terra.com.br>
To: <amps@contesting.com>
Sent: Friday, November 02, 2007 5:43 PM
Subject: [Amps] How to measure output power of a 800W vhf amp
> Hi guys.
> I am almost finishing a 2xGI-7b VHF amp and I would like to have a
fair
> reading of the output power. Lots of thoughts crossed my mind, even a
simple
> diode rf probe but I guess it will be dificult to find a suitable ( please
> read cheap and easy to find) diode for this task, being not linear is not
an
> issue at all, I can do the scale of the meter accordingly.
> Does anybody have a sugestion for this circuit? It is a VHF only amp
so
> a narow band probe is ok.
>
> P.S. What about a 30 dB resistive attenuator ahead a simple 1N4148 RF
> probe, will I burn in hell for thinking about it???
>
>
> Thanks
>
> Horta
> PY2NI
>
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