[Collins] Collins 51S-1 Crystals

[Dr.Gerald N. Johnson]

Might it be that Y20 is for the 15.50 MHz band?

73, Jerry, K0CQ, Technical Advisor for the CRA
Dr. Gerald N. Johnson, Electrical Engineer
----- Original Message -----
From: Gary Franklin [mailto:franklin6209 at chartermi.net]
Sent: 10/19/2005 7:01:33 PM
To: collins at mailman.qth.net;boatanchors at theporch.com
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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