[AMRadio] SP-600

Rick Brashear rickbras at airmail.net
Thu Dec 28 10:17:00 EST 2006

Thanks to everyone for the help.  It appears to be in pretty close 
alignment mechanically according to the info everyone provided.  After I 
check all of the tubes and do a little cleaning I'll see how close it is 
in rf alignment by injecting a few known frequencies.  I suppose by 
using the logging scale in conjunction with the main scale and making 
notes on favorite frequencies it will be fairly accurate.  I got kind of 
spoiled using the R-390/URR and the R-388 since both of them are dead on 
and both of them have provisions to calibrate the scale.

I know I need to do a lot of reading about the SP-600 before I go much 

Thanks again to all for the help.

Grant Youngman wrote:

>There is a small tic mark at the left of the lower scale on the main dial
>(just below the 0.54 Mhz tuning mark)  Set the bandswitch to the 0.54 Mhz

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