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Re: [IRCA] SRF-59 Alignment Procedure
- Subject: Re: [IRCA] SRF-59 Alignment Procedure
- From: D1028Gary@xxxxxxx
- Date: Sun, 23 Dec 2007 03:57:32 EST
Hello Bill,
The IF of this SRF-59 is a mystery. There is only one adjustable AM IF
transformer on the radio's circuit board, and this is the only adjustable AM
component in the radio (the coils on the loopstick are not adjustable by
sliding, and there are no trimming capacitors on the tuner). Most
single-conversion radios give a hint of the IF by at least weak image reception twice the
IF lower than strong locals at the top of the dial, but this radio has no
image reception whatsoever. The secrets are apparently contained within Sony's
proprietary 30-pin IC chip hidden underneath the main circuit board,
resulting in performance far exceeding what technicians of the 70's and 80's (like
myself) are accustomed to.
73, Gary
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