Re: [IRCA] SRF-59 Alignment Procedure

[D1028Gary@xxxxxxx]

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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