Avionics The original Vulcan B.1 radio fit was: two 10-channel VHF transmitter/receivers (TR-1985/TR-1986) and a 24-channel HF transmitter-receiver (STR-18). Source: Internet
The initial B.2 radio fit was similar to the B.1A Price, Blackman and Edmonson 2010, p. 112. though it was ultimately fitted with the ARC-52, a V/UHF transmitter/receiver (PTR-175), and a single-sideband modulation HF transmitter-receiver ( Collins 618T). Source: Internet
When no circuitry is common between transmit and receive functions, the device is a transmitter-receiver. Source: Internet