[Hammarlund] HQ-129-X Question

[Bob Macklin]

Part of the problem is you do not know how accurate the dial was when the 
receiver was new.

And in 1960 about the only company that had a really linear LO was Collins

With the standard GC receivers of the period all you could do was adjust the 
inductor at the low end of the band and the trimmer capacitor at he high 
end. Before 1960 we did not have digital counters. And the ones I do 
remember from about 1960 would not work at HF frequencies.

Instead we used frequency meters like BC-221s.

These LOs will never have the precision of today's rigs. And they don't need 
it.

Bob Macklin
K5MYJ
Seattle, Wa.
"Real Radios Glow In The Dark"
----- Original Message ----- 
From: "Richard Knoppow" <1oldlens1 at ix.netcom.com>
To: <hammarlund at mailman.qth.net>
Sent: Monday, November 29, 2010 1:53 PM
Subject: Re: [Hammarlund] HQ-129-X Question


>    Before this goes any further I want to say a word of
> thanks for all those who have made suggestions and passed
> along information. I hope none of my replies has been too
> terse to disguise the fact that I am very grateful for the
> help. I know a very great deal more about these RX than I
> did before.
>    I am not sure what the problem is. If its mechanical
> misalignment of the capacitors its not obvious from
> inspection. Adjusting the caps would require removing the
> tuning unit from the chassis. I am not quite perpared to do
> that, at least just yet. I think it is more likely to make
> things worse than better.
>
>
> --
> Richard Knoppow
> Los Angeles
> WB6KBL
> dickburk at ix.netcom.com
>
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