This is an aircraft lifeboat survival radio, Granger, MarTech Model 150-2A. This is a battery powered 2 channel VHF AM receiver transmitter operating on 121.5 or 123.1 mhz.
This is an aircraft digital flight data recorder, used in a number of military aircraft, this one was removed from a UH-60 helicopter. Sundstrand Data Control Model UFDR, PN 980-4108-001.