[Boatanchors] HQ-180 Need Help
John Page
k4kwm at hotmail.com
Thu Dec 1 20:09:48 EST 2005
Update on the HQ-180.
As the ameco pre amp helped so much, I have been checking the front some
more. This is what I have found so far.
The local osc 6c4 grid was at about -10 volts. should be around -6. The darn
thing must have been almost cut off. The grid resistor was at 100k as it was
supposed to be. I had to put in a 47k to get the grid at -6 volts. This in
turn got the grid of the 1st mixer from -1.5 up to -3 where its supposed to
be. Also the screen of the 1st mixer was at 90 volts and the screen resistor
was correct at 6.8k. Had the go to a 2.7k resistor to get 110 volts on the
screen. The receiver will blow you off the chair now on the broadcast bands
and signals were heard on bands 3 and 4 also. Bands 5 and six are a whole
lot better now also.
I guess I am wondering why I am having to re-engineer this thing?
I suspect a total re-alignment will also be in order. Setting up the 60kc IF
is a pain in the tush.
If I have found all this stuff so far, there has got to be some more wrong
with it. So I will "keep on truckin' ".
Thatnks for all the support guys, John
John Page K4KWM
Hollow State since 1953
(ex W8PKU,N8BLB,NA8O)
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