hace 6 años
Hello!
The thing is very simple: you only have to take advantage of the voltage that appears after the detector diode (or galena stone if you have got one)
As the needle is likely to go to the bottom with powerful stations, you must put a R in series to the vumetro.
How much is that R?
Impossible to know because I ignore the level of signal that you have at the output of the diode, but you can try different values or a preset and adjust it until you have the maximum deflection on the transmitter that enters more powerful.
The others, will mark less and you will have your S-Meter.
A hug!
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