[ARC5] OT: Hally Instability - Hammarlund drift.

[Jim Wiley]

Way back when I was a kid (in the mid 1960's), I took the clock out of 
my HQ-170 and replaced it with a homebrew 10-channel crystal oscillator 
similar to the type that was in a SP-600 JX.  I used it to operate on 
several Southern California traffic nets (Mission Trail Net, WestCARS,  
Golden Bear Net,  a couple of others that I have forgotten the name of. )

I built a similar oscillator to work with my  Heath  HX-10 "Marauder" 
AM/CW/SSB exciter  / HA-10 "Warrior" amplifier.  It worked very well 
indeed for net operations,  with almost no warmup required.    But I was 
a teenager then.  I seriously doubt that I could even lift the darn 
things (by myself) now.

Ahh, those were the days.

- Jim, KL7CC



On 11/19/2015 9:56 AM, Dennis DuValll via ARC5 wrote:
> Good advice if you have an HQ-170.  The HQ-180’s not so bad….
>
> Dennis D.  W7QHO
> Glendale, CA
>
> *****************
>> On Nov 19, 2015, at 6:39 AM, Glen Zook via ARC5 <arc5 at mailman.qth.net> wrote:
>>
>> In the late 1950s, early 1960s, some of the Hammarlund advertisements for receivers like the HQ-170, HQ-110, etc., mentioned using the clock / timer to turn on the receiver for like 1-hour before it was to be used.  This was to improve stability. Glen, K9STH
>> Website: http://k9sth.net <http://k9sth.net/>
>>
>