[Drake] need help with b-line

[Freeberg, Scott (STP)]

Usually when loud hum shows up, your receiver high voltage power supply =
capacitors have dried out or failed, allowing rectified AC to couple =
onto your audio amplifier output.   I have a Collins 75A1 doing that =
right now.  Suggest you open the receiver and check the high voltage =
capacitors.  After 6 years of Boat Anchoring, I've come to the =
conclusion that for a older tube radio like Collins, Drake, Halli, =
etc..., there is no such thing as a good electrolytic capacitor.  They =
are either bad or going bad and you don't know about it :^)  My personal =
opinion. =20
73,WA9WFA Scott in Saint Paul Minnesota
ARRL Life Member, CCA 962, AWA=20
Licensed since 1967