[Milsurplus] Misc Radio Equipment

[Curt Arseneau]

Hello all,
We have some misc. pieces of radio gear of unknown (to me) origin. Can anyone tell me where some of these items were used? I will try to list what ever I could glean off of the ID tags.

1) Receiver R-138

2) VHF communication system Model VSC-2
                                               CAA-TSO C-37, C-38

3) Bendix  Radio Altimeter 2067631-0501
                                        ALA-51A

4) Bendix SYN-1B SYN-AMP power supply

5) Collins Part# 522-1660-00 Type618T-3

6) Bendix VHF Transceiver 2070326-4220
                                        RTA-42A
Any help in identifying the aircraft these pieces would have originally occupied and what purpose they served is appreciated.
Thanks,
Curt                                        

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