[Boatanchors] Receiver drift.

[Carl]

A Google of "VFO stabilizer" comes back with lots of hits. Ive heard nothing 
but good reports of the K4DPK and X-Lock but havent tried them.

The HQ-129X responds well to zener regulation of the LO and BFO plus tossing 
the oscillator trimmers for Johnson submini air variables. Ive also had to 
replace a few fixed caps on some sets.

Carl
KM1H


----- Original Message ----- 
From: "Ken" <n5cm at rtconline.com>
To: <boatanchors at mailman.qth.net>; <boatanchors at theporch.com>
Sent: Sunday, January 16, 2011 6:34 AM
Subject: [Boatanchors] Receiver drift.


> Hi Sandy & Lists members,
>
> Many years ago, a company featured a description of a circuit for 
> nullifying
> or minimizing drift. It was adjustable which could be set to
>
> compensate for the warmup, etc. Does anyone remember it and where I might
> find out the particulars?
>
> I am a confirmed "boatanchor enthusiast" and will allways be! My 
> Hammarlund
> HQ-129-X has an initial warm-up drift and a very
>
> slow drift which requires resetting periodically.
>
> I have a voltage stabalizer which gives me exactly 115 vollts regardless 
> of
> my line volltage, even if the line voltage varies from
>
> 85V to 135V. Amazing, but true. It handles everything except my Central
> Electronics 600L linear amplifier.It is a monster, came off a
>
> Navy Ship and I got it right after WW2. Now with an electric heater here 
> in
> the shack, when the heater switches on and off, the
>
> voltlage to my radio equipment is a steady 115 volts. Best investment I've
> ever made!
>
> Take care,
>
> Ken   N5CM
>
> ----- Original Message ----- 
> From: "Sandy" <ebjr37 at charter.net>
> To: "Larry WA9VRH" <wa9vrh at dishmail.net>; "Eugene Hertz"
> <eugene at hertzmail.com>; "Boatanchors list" <boatanchors at mailman.qth.net>
> Sent: Saturday, January 15, 2011 8:10 PM
> Subject: Re: [Boatanchors] DO YOU REMEMBER?
>
>
>
>
>
>
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