[ARC5] [Milsurplus] WTB Original LM-10 manual

[Bob kb8tq]

Hi

However impressive the cal setup is in the pictures, it was even more
impressive in real life. I came across a good portion of one in a surplus
outfit *many* years ago …..

Bob

> On Mar 25, 2022, at 1:57 PM, Kenneth G. Gordon <kgordon2006 at frontier.com> wrote:
> 
> On 25 Mar 2022 at 13:38, Robert P. Meadows wrote:
> 
>> Folks, To the best of my memory and knowledge, the LM series of
>> "frequency meters" were individually calibrated, and the book for same
>> serialized to the instrument. I have memory of a photo of the
>> calibration setup, as well as the printer that made the calibration
>> books.
> 
> Yes. That is correct. The calibration books are unique to each "freqency meter". And I too 
> remember seeing a photo of the calibration equipment at the time. It was quite large. The 
> technology of the time was quite impressive too.
> 
>> Making a calibration book by any means absent the actual measurements
>> for the specific LM is useless if the instrument is to be used with
>> any degree of accuracy. R 
> 
> Well, Bob Keyes' program does a good job of recreating a calibration book, although the 
> result can then be tweaked for better accuracy after that is done by using a good, accurate, 
> frequency counter at selected frequencies. Making an accurate calibration book is a 
> time-consuming process, but others have done it.
> 
> If you no longer have a DOS based computer to run it on, you can install one of the DOS 
> emulators on your computer and run it by that means.
> 
> Ken W7EKB
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