[Hammarlund] HQ-129x - Xtal Calibrator Puzzlement

[Kenneth D. Grimm, K4XL]

W4AWM at aol.com wrote:

>Hi Barry,
>
>I have just been through my extensive collection of Hammarlund literature and 
>the only thing I can find is reference to any calibrator accessory is the 
>HC-100 calibrator which is recommended for installation in HQ and SP-600 
>receivers. There was a particular model, number 38657-G2 for the HQ-129X and HQ-140X. 
>It sold for $17.95. Apparent date of manufacture was 1956.
>
><snip>
>
>73,
>
>John,  W4AWM
>  
>
John, the FC-135C is quite a bit older than the HC-100.  I found one in 
an old SX-28 that I picked up in a junk shop.  The owner had installed 
it...partially....with some of the leads wrapped around pins of various 
tubes to pick up voltage and also to output the signal. 

Barry, he had attached an old telephone switchboard switch as an on/off 
switch.  The switch was in the darkest colored lead (green?) coming out 
of the FC-135C.  The switch appeared to ground the green lead. 

Unfortunately, my FC-135C had the glass tube crystal and the glass was 
broken and one of the leads to the crystal wafer had been broken off.  
If anyone has for sale one of the glass or metal tube 100kc crystals 
that fit the ft-243 size socket (such as the Bliley KV3 100kc rock), I 
would appreciate hearing from you. 

I can't find any literature on the FC-135C either.  If someone comes up 
with anything at all...even a hand drawn schematic, please send it along 
and I'll put it on BAMA.

Does anyone know who owns the web pages at 
http://eshop1.chem.buffalo.edu/hammarlund.htm ?  It looks as though he 
plans to post some information on the FC-135C.  If we knew who he is, 
perhaps we could get him to post the info that he has.

73,
-- 

Ken K4XL
k4xl at arrl.net

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