Hi all,
Discovered a atrange sound when receiving some "weak" stations. After further investigation the "door" sound appears only at abt
-90dBm signal level. Eighter lower or higher signal - the strange
sound goes away. Sound example attached.
Settings as follows:
145.425 12,5kHz BW. SQ does not interfer.
Also at 70cm, there is a slight appearance, but main concern is on
2m.
Is there any schematics for the radio and/or any ideas on what is going on?
73
SM6TOB, Bengt