WJ-9546 FDM demodulator

WJ-9546 Frequency Division Multiplex demodulator

This is basically a sensitivity impaired 6 channel HF receiver for 0-20 MHz LSB, USB. As you can see from the front panel it is RS-232 or RS-485 remote controllable. Other than that I can't tell you much. I don't have the software or information on the DIP switches that configure the remote interface.

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WJ-9546 inside

Beautifully engineered. The six receiver cards are bottom center. There is a lot of sophisticated hardware in this little box. Internally this FDM unit looks similar to the inside of the WJ-8691.

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This is one of the six receiver cards.

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This is the DSP card. The DSP is a Motorola XSP5601ZL120.

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This is the card labeled "AUDIO RECON" for audio reconstruction. It is a DSP demodulator for the six audio channels. The DSP is another Motorola XSP5601ZL120.

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