SYS.INFO NODE: QSL.NET

PACKET RADIO TRX

DIGICOM MODEM ADD-ON

[ PCB: REV.3 ] [ MODEM IC: TCM3105 ] [ TRX: SA818S ]

This is a custom stacked PCB integration for Commodore 64 Packet Radio operation. Combines the classic Digicom modem circuit with a modern integrated transceiver. I'm recreating this project for nostalgic fun after spotting KINZI’s original work on a German C64 community forum. ;-)

The photos below are from KINZI. After I finish my own, I will upload them.

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TECHNICAL SPECS:

Direct C64 Tape Port Interface
SA818S 1W VHF/UHF RF Module
1200 Baud AFSK Standard
ULN2003 Hardware PTT Driver
Compact Stacked PCB Footprint

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