[Icom] 706 freq problem

[Matt Erickson]

Yep, crystals CAN change. They can also stop oscillating too.
Realign the master oscillator and you should be good for several more years.

At 10:55 AM 6/15/03 , you wrote:

>About a week ago my original model 706, purchased new in 1996 by me, was fine. 
>A couple of days ago I noticed the Maritime Mobile Service Net on 14300 was on
>14298.98.  Odd.  Prompted me to do a little checking.  Ah, WWV was on 14999.24.
>  Hmmm.
>
>I don't have the service manual but I do have the schematics.  First suspect
>would be the 30.000 crystal, CR275.  I can't recall having seen a crystal
>suddenly change like that, usually they tend to drift.  
>
>Without a service monitor or other highly accurate receiver I can't tell if the
>30.000 crystal is on and it is just the display that is off (dependent upon the
>crystal for the display, a 9.8304 MHZ crystal)  Hopefully I can calibrate an
>analog receiver to tell me if the 30 MHZ crystal is off or not. 
>
>However, right now I'm soliciting comments as to 'probable cause.'  Such
>comments are welcomed.  
>
>73
>Ed, W5HTW
>
>--
>Ed Brooks, W5HTW
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>Active since June 1956 Extra since
>Jan 1970
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