AEA PK-232, 87, & 88 to DE9 comport
MFJ-1270 to ATARI TTL port
KPC-2 to Commodore 64 TTL port
TRS ColorComputer serial port to TNC2 ComPort
The most used DB25P to DB25P, 5-wire "hardware-handshaking" TNC to PC interface in PacketRadio.
KAM to Commodore 64 TTL port
TNC2 to Apple comport
"CoCo" to TNC DB25 comport (software handshake)
Hardware Handshake TNC2 to PC (clone) comport
TNC2 to MacIntosh SE
PacComm Tiny-2 to MacIntosh
MFJ-1270 TTL to Commodore 64 and VIC 20
AEA PK-87 TNC2 (clone) TTL to Commodore 64 or VIC 20 comport
PacComm Tiny II and 9 pin TNC comports to PC DB 9 male serial comport.