[HBR] HBR IF transformers

W6ph at aol.com W6ph at aol.com
Tue Apr 20 09:01:02 EDT 2010


The original HBR-14 article in 1957 used a homebrew interstage 1610 kHz 
transformer 
which should be easy to duplicate.  
 
Instead of the 100 kHz IF transformers, the 85 kHz IF transformers from a 
defunct 
BC-453 are a good choice.  The 85 kHz BFO coil can also be used.  There are 
several 
receivers on the HBR website that show the use of these transformers.
 
                                                73, Kurt, W6PH
 
 


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