Hello everybody!
I’m in the middle of a project trying to reproduce the remote control for my 4 channer Beomaster 6000 from the 1970’s (see the pic attached taken from the interweb). This is the one that uses modulated ultrasonic tones around 47 kHz to pass the commands
This remote seems to be a hard one to find nowadays. Or, if found the prices tempt to be very high. This is why I decided to try to reproduce it
I have either acquired, ordered manufactured (PCB) or produced by 3D printer by myself all other bits and parts besides the ultrasonic transmitter/microphone used in the circuit. It is of a old type which uses around 180 volt bias. It goes under the B&O part number 8970002
Now, is there anyone inside the community who has got experience with this device? Or the better if anyone happens to have reserve parts for Beomaster 6000 remote receiver or this transmitter . Receiver because it seem that B&O used the same part in transmitting and receiving ultrasonic commands
Or is there another known type of a part which could be used in this circuit? Perhaps from an old microphone or so…?
Jouni
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