If you lose either TX or RX, then you don't have two-way communications.
Therefore you have two-way radio communications failure and should
operate
according to 91.185.


If you lose just transmitter or just receiver you can still communicate
one-way. Two-way radio communications failure means loss of both
transmitter and receiver.

This argument reminds me of the debate of which is the inner or outer knob
on our GPSs.

Kobra