[Collins] Collins 51S-1 Crystals

[Dave Brown]

15.5 x 2 ==31 MHz. 10.333 x 3 = 31 MHz.
Without dragging out a manual, this might be an indication of what's 
going on?
Someone will know, for sure.
73
 ZL3FJ

----- Original Message ----- 
From: "Gary Franklin" <franklin6209 at chartermi.net>
To: "Collins" <collins at mailman.qth.net>; "Old Tube Radios" 
<boatanchors at theporch.com>
Sent: Thursday, October 20, 2005 3:01 PM
Subject: [Collins] Collins 51S-1 Crystals


>I have recently replaced about 9 crystals in my 51-S1 which were so 
>far off frequency I couldn't calibrate the hair line. I have a 
>puzzling instance in this project. Crystal Y20 is listed in my manual 
>as 10.333 Mhz.   The crystal designated Y20 on the crystal waffer of 
>my receiver is stamped 15.500 Mhz ????   Is this just a crystal which 
>was stamped incorrectly or are there different versions of 51S-1's 
>which use 10.333 and 15.500 Mhz crystals for Y20??
>
> By the way I purchased the crystals from West Crystal and the are 
> right on frequency! I would highly recommend them if you are looking 
> for 51S-1 crystals. They have a web site, just search for West 
> Crystal.
>
> Gary  K8BKB
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