bad signel
hi
What you dont say is about the Aerial you moved the Radio yes fine but
are you using an out door one or one on the scanner because it sounds
like loss of signal Strength possibly due to where you moved radio to.
Suggest you move radio Temporary back to previous place see if all
is Well. also check all aerial connections for short circuit or broken.
Cloud cover can alter reception but this does sound like loss of Signal
Of course I may be wrong and no doubt someone will say its Rubbish
But its a start.
Tony
EGLF Farnborough not far from EGLL Heathrow