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AEA PK-88 Packet Controller TNC Vintage RS-232 No Power Adapter Untested

MFJ-1278B Ham Radio Multi-Mode Data Controller TNC Untested

PACComm Pac-Comm Tiny-2 TNC Terminal Node Controller ham radio Unit Only Tested

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MFJ Enterprises Multi-Mode Data Controller TNC 2 Packet Radio MFJ-1278-TNC 2