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AOR AR 950

AOR AR 950

It is not too difficult to add a discriminator output to an AOR AR-950. The scanner has a spacious layout and uses DIL ICs.

The receiver IC is a TA7761. Pin 9 contains the baseband audio.

AOR AR 950
pen 9
Pin 9 of the TA7761 contains the unfiltered audio
10 k resistor, soldered to pin 9


A 10 k resistor is soldered to pin 9 of the TA7761. The resistor's other lead is connected to a 3.5 mm mono chassis socket, that can be mounted in the back of the scanner. The socket's ground can be connected to the metal shield of the coil close to the receiver IC.

For the connection with the chassis socket you can use a piece of shielded wire, or two twisted pieces of stranded wire, as shown on the left.

Overview of the discriminator output

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