HiThe receiver has two 3.4 kHz single pole highpass filters in series.
Update: What is the frequency of the transmitter?
ak
Schematic for Transmitter is in post #9 on this thread , don't know what the frequency of it is though ! .
HiThe receiver has two 3.4 kHz single pole highpass filters in series.
Update: What is the frequency of the transmitter?
ak
Petkan:Hello,
Also the light emitter must be modulated.
A constant light source will not work.
Bertus
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