I have a vox board PB1438B and another one that does not have a PB number on it.
The B model has a sn72560 IC and mc14013 IC ..
The one with no part number has mc14024 and mc14011 Where can I find a schematic for this one with no part number.?
Attached is a photo of the board that has no part number. Its malfunction is that it will not key into transmit in cw. no break-in.
Robert
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