Sigtronics Transcom II portable aviation intercom SPO-42

Soft Comm International ATC-2Y Intercom - presumed working, not tested

Sigtronics Transcom II portable aviation intercom SPO-42

Fliteway CopyCat Aircraft Recorder Adapter DR-811 Aviation Intercom Multitech

Sigtronics Transcom II Portable Intercom 6-Way

SIERA RADIO INTERCOM 2 PLACE M# SRC-10B SN- 2419

Sigtronics Transcom II Intercom

Telex Communications PC 4 Aircraft Intercom CAT No. 70650-000