Sony ICF SW7600GR User Guide

Modification of Sony ICF-SW 7600GR for DRM

This receiver (like the old model SW7600G) has a 2
Schneider crystal mixer can be used for downconverting the IF to 12 kHz. As there is
not enough space inside the receiver, I put the mixer board, together with a 9V
battery and a filter CFW455F in an extra case. I tapped the signal before it enters the
IF filter on the board (CF201, see picture below) and connected it to the receivers
line out jack (for listening to AM you can still use the earphone jack).

nd

IF of 455kHz, so the SAT-

Pic 1: schematics showing CF201

Pic 2: showing CF201 on the PCB

For the connection use a shielded wire and connect the shield to ground next to the signal. The other
end of the wire can be connected to the line out after removing the capacitors C248 and C250.

Pic 3: showing the „line out“ connection