[ARC5] [Milsurplus] LM Questions

[Bob Camp]

Hi

When the calibration book was stamped out by the giant test set that calibrated 
the frequency meter, the corrector was center scale for the entire process. The 
“interesting question” is — how long did they burn in the sets before they calibrated 
them? There was a war on …..

Indeed that test set is one of those items that I really wish I’d bought when I had
the chance … no money, no truck to haul it, no space to store it ….still should have
gone for it !!!!!

Bob

> On Nov 13, 2017, at 11:55 AM, Jack Antonio <scr287 at att.net> wrote:
> 
> I've been playing with my LMs lately, and
> would like to compare an observation.
> 
> This concerns the oorrector. I have 3 and
> they all do pretty much the same thing.
> 
> At the 2000 kc checkpoint, the corrector will
> be between 4 and 5. At the 4000kc checkpoint,
> the corrector will be at 2 to 3.
> 
> I'm wondering if this is pretty much normal
> for these 70+ year old instruments, or is this
> an indication of aged components or other
> problem?
> 
> I am assuming that when these were brand new
> the corrector didn't change much if at all
> across the band, would this assumption be
> correct?
> 
> It doesn't cause too much of a problem, all
> three of my meters do much better than the
> ..01% specified in the manual.
> 
> Jack Antonio
> WA7DIA
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