[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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