The AGC gain going down at 13.7MHz indicated the IF frequency is not optimally aligned with the BPF.?
Try to reduce the IF frequency in steps of 0.1MHz
Don't go too far as this will reduce the sensitivity but you may see an impact on the "AGC noise"?
--
HBTE Files section:?
/g/HBTE/filesErik, PD0EK
