[Hammarlund] alignment HQ-170

[Patrick A. Thompson Sr.]

I'm having a fit getting a HQ-170 to display any great amount of gain.  I'm
begining to think that the 3035 khz stage has damaged transformers. The
tuning there acts "squirrely". The common 455 khz throught these same
transformers peaks nicely.

If I disregard the alignment instructions and peak the 60 khz stages at 3
khz band width I get a receiver that rings on either side of a signal but
with some gain or maybe even a low motor boat type oscillation.

If I align carefully using lower sideband and 0.5 bandwidth as the book
decribes I get a receiver that can hear my generator but is mostly deaf
except for a few high power shortwave broadcasters.

Should there be enought gain when operating normally for a background
"rushing" sound from the amplifiers or is this receiver normally dead quiet
without an antenna?

I have gone through the resistance and voltage charts and found no great
discrepancies. I've also checked the tubes.

Attempts at signal tracing have been fruitless because there is always some
gain at each stage but I don't know if the gain present per stage is normal.

Anyone know any good places to look?

Pat
wa4tuk