[Hammarlund] HQ-170 Question

[DW Holtman]

Hello,

First, I would like to thank all of you who responded to my last 
question about distortion and difficulty in tunning in a SSB signal. It 
turned out to be the usual, dirty connectors and a very careful alignment.

Yesterday I did an RF alignment. It went fine except for the following. 
The 21 MHZ band has very low sensitivity, around 12 uV, using my ear for 
the lowest discernible signal I could hear (MDS). (20 Meters for example 
was under 1 uV). The oscillator coil T-25 adjusted the frequency of the 
oscillator fine. But, the RF coil T-21 has no adjustment. Suspect a bad 
cap or broken coil wire the Can. Is it possible to remove the cover 
using the clip device on the bottom of the can without un-soldering the 
whole thing?

Also, the sensitivity on 80 meters is not very good and 160 has very bad 
sensitivity, around 30 uV MDS. On both of these low bands, all 
adjustments worked as they are suppose to.

Any thoughts or suggestions would be greatly appreciated.

Best,
DW Holtman
WB7SSN