Behold, Dirty Q. Tip scribed on tube chassis:

Update - It's a Hallicrafters CB-5 Mark II.

I have schematics already. I guess it's time for me to exercise that
capacitor meter I blew $200+ on. I can easily test diodes, transistors,
diodes, capacitors, and resistors, and I'm pretty good at soldering as
well, so this should hopefully this will just be a time-consuming
project.

I was wondering if perhaps someone might know what section of the CB
could be causing this (final stage, etc - it's not the main power supply
section). That might get me going the right direction... as is, aside
from removing components and checking their values, I'm stumped.

Hi,

I had two of those babies and I miss them.

The squeal is likely in the T/R switching - the audio isn't getting
cutoff from the speaker and sent to the plate of the 6AQ5 (IIRC) final
tube correctly.

The only caps you'll need to change are electro's and dust off the
variables.

Watch the driver coil assembly - it buggers up and causes touchy tuning.

Enjoy your treasure! :-)

--
Gregg "t3h g33k"
http://geek.scorpiorising.ca
*Ratings are for transistors, tubes have guidelines*