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PRO-2021



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The Realistic PRO-2021 can be opened by removing the 5 screws of the top lid. I also disconnected the loudspeaker PCB-connector, which makes the scanner easier to handle.

PRO-2021

There are 2 options for a discriminator output: directly to pin 9 of the discriminator IC, a TK10420. Or to TP3 (test point 3), which is connected to this IC directly. I chose for this last option, so that I didn't have to solder to the IC.

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TP3 contains the baseband audio

Close-up of the connection to TP3

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TP3 consists of a 0 Ohm resistor, mounted vertically. I connected a 10 k resistor to the free end of this resistor.

The inner connector of a piece of shielded cable is connected to the RC-joint. The braid is soldered to the metal shield of the IF coil close to TP3. The other side of the shielded cable was connected to a 3.5 mm chassis terminal mounted in the back of the scanner.

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