>
>Hello:
>
>I'm building a 160M only link-coupled antenna tuner. Will have a Bird
>wattmeter on the input side, but would like to have a "relative power
>output" indicator on the output side (600 ohm balanced line).
>
? Such an indicator is not very useful because a g-g amplifier is tuned
for max out with max drive using its built in RF relative output meter.
Tuners need only a reflectometer to indicate when zero reflected power is
obtained during adjustment.
>I've seen schematics for such devices in handbooks, but they are used on
>the output of amplifiers running into 50 ohm loads, and include
>provisions to measure reflected power, as well.
>
>I'm thinking that the voltage on the 600 ohm line could be much higher
>than it would be on 50 ohm line.
>
? C. 3.5 times higher
>All I (think) I need is a voltage dropping resistor, a diode, a pot to
>fine-tune the voltage and a DC meter. I just don't know the values of
>each.
>
>Anyone know where such a circuit may be found?
>
>TNX, Barrie, W7ALW
>
>--
>FAQ on WWW: http://www.contesting.com/FAQ/amps
>Submissions: amps@contesting.com
>Administrative requests: amps-REQUEST@contesting.com
>Problems: owner-amps@contesting.com
>
>
- R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K,
www.vcnet.com/measures.
end
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