[time-nuts] Advice on TRACOR 527E

[Bob Camp]

Hi

On the site - also grab the 527A manual. It's the one with the schematics in it. It also has a complete listing of the FSCM numbers as of 1967. Useful for figuring out "who made that" questions when repairing military surplus gear .....

One thing you will run into on the 527 - They originally came out in the era of  5 MHz standards. The specs on the boxes only list 100KHz, 1 MHz, and 5 MHz as valid inputs. In reality, they will accept anything that's an integer sub-multiple of 5 MHz as an input (2.5 MHz, 1.66666 MHz, 500 KHz ...). The front end is an injection locked multivibrator. Check to see how happy yours is with a 10 MHz input. Most will run with 10 MHz and some multiples of 5 MHz sub multiples (like 5/2 x 3 = 7.5 MHz). 

If enough people have them, we can start a thread on correctly computing the Alan Variance from 100 foot long strip chart's. So much fun, ink all over the place ....

Bob


On Mar 7, 2010, at 6:32 AM, olivier MEHEUT wrote:

> Thank you so much for all replies.
> 
> Good reading for this sunday.
> 
> 
> 73, Olivier F6HGQ
> 
> 
> Le 7 mars 10 à 12:05, gandalfg8 at aol.com a écrit :
> 
>> 
>> In a message dated 07/03/2010 10:17:54 GMT Standard Time, f6hgq at wanadoo.fr
>> writes:
>> 
>> Could  not locate any O&M manual on the web for this equipement
>> can somebody  help ?
>> -----------------
>> Once again Didier saves the day:-).....
>> 
>> _http://www.ko4bb.com/cgi-bin/manuals.pl?dir=09%29_Misc_Test_Equipment_
>> (http://www.ko4bb.com/cgi-bin/manuals.pl?dir=09)_Misc_Test_Equipment)
>> 
>> Look towards the bottom of the page, no diagrams in the 527E manual
>> unfortunately but the 527A manual that's also there does have diagrams so that
>> might help, and much other interesting stuff to keep you distracted too:-)
>> 
>> regards
>> 
>> Nigel
>> GM8PZR
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> 
> 
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