Whats the speechless code again?
IIRC
'dot dot dot dot' if your transmit button works - ie Morse code 'H' - for Homing.
Or perhaps, fly RH 1 (or 2 min) triangles (TAS dependent). It was often suggested that this was done somewhere ATC would spot you (eg. maybe just below base of airway/overhead airfield (above zone) etc).
If neither rx'er nor tx'er works it was LH triangles (or have I got that @rse-about-face? I am sure someone will tell me)
Agree about the 'guard police' Twonkers! Though it is annoying in busy London airspace to have 'GABCD' wittering on while you are trying to listen/get a word in egdeways to London ATC, whom I suspect are totally overworked - wouldn't change places with them for all the tea in China.
In reality, we turn off or turn down - but then some fk-wit of a line-trainer/checker b*llocks you - if you forget to switch it on/up again. C'est la vie.