You can make the same circuit setup operate as a receiver,
then as a transmitter by causing it to oscillate when used
as a transmitter, and reducing the bias, or the Vcc to stop
it oscillating when using it as a receiver.
Such circuits used to be used a lot when thermionic devices
(valves) were very expensive, but such circuits did not make
very good transmitters, or receivers.
Nowadays better circuits are used with transistors dedicated
separately to transmitting, and circuits dedicated separately
to receiving are much better than those circuits which combine
transmitting and receiving.
John