[Hammarlund] HQ-180 problem-not the tubes

[manualman at juno.com]

Radio is probably roughly 45 years old. Resistors change value,
capacitors become leaky or shorted, IF alignments not quite on
(especially 50 KHz IF). A bad tube would not be my first guess of
trouble. Neither the HQ-170 or 180 series of receivers were also never
known for the great audio (Hi-Fi) quality. It was communication quality
at best.

Pete, wa2cwa

On Thu, 25 Sep 2014 17:16:12 -0600 Robert Sauvan <rsauvan at beyondbb.com>
writes:
> The saga continues. I took the tubes out of my HQ-170 and put both of 
> 
> them into the HQ-180 for the related  AGC/AVC circuits and the issue 
> is 
> still there. Put the tubes in question from the 180 into the 170 and 
> it 
> still works fine. Looks like I am going to have to pull the radio 
> and 
> put it on the bench for further testing. Will try some voltage 
> checks 
> first and see what I come up with. After that, we may be in touch 
> again.
> 
> Thanks-Bob-W0YBS