[Hallicrafters] SX-25

jsloss k7mks at comcast.net
Mon Aug 24 20:53:30 EDT 2009


Does anyone have a schematic of a SX-25 that shows only 3 coils between the antenna and grid of 1st RF and 4 coils between 1st and 2nd RF which is what the one I'm restoring. The original manual schematic shows 4 coils between Ant and 1ST RF and 3 coils between 1st and 2nd RF.  This unit is a late post war production unit

I also have a parts SX-25 (a early production unit based upon types of resistors used) which has 3 coils then 4 coils.  Neither set  had mods to these coils.  I'm beginning to think Hallicrafters started out with one design and then changed it without correcting the manual.  The SX-25 was designed to use just one RF stage on the BC band.  

Thoughts appreciated.

Joe k7mks


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