Hi everybody,
I have the same problem.
After few minutes or sometimes a little bit more,
suddenly the signal disppear.
If i touch some components of PLL circuit with the Point of a screwdriver, or if i use a fan to refresh some components the signal come back again.
Probably the screwdriver or the temperature change modify some capacity value or insert RF noise and the PLL start again.
IIonen did you find any solution?
Where is the IF filter on the scheme?
Thanks so much
Ruggero...

Hello everybody,
my name is Ruggero, I'm an Air Traffic Controller and a Radio Amateur in Italy (callsign IS0FFY).
Thanks for admission....