[Hammarlund] Old Hammarlunds

Carl km1h at jeremy.mv.com
Tue Apr 12 16:16:00 EDT 2011


Also very likely even for critical AM circuits such as at air bases which 
were some of the earliest USAAF WW2 complaints which resulted in the crystal 
mod.

Carl
KM1H


----- Original Message ----- 
From: "Glen Zook" <gzook at yahoo.com>
To: "KA1KAQTodd" <ka1kaq at gmail.com>; <kgordon2006 at frontier.com>
Cc: <Hammarlund at mailman.qth.net>
Sent: Tuesday, April 12, 2011 4:00 PM
Subject: Re: [Hammarlund] Old Hammarlunds


> You have to remember that many of the SP-600 receivers used by the 
> military were the JX- versions that could be crystal controlled as well as 
> the tunable feature.  Those JX- versions were usually used with crystal 
> control for things like RTTY circuits.
>
> Glen, K9STH
>
> Website:  http://k9sth.com
>
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