[RTTY] Topband: pre-selector/filter

[Gedking at aol.com]

I used to use an old RME pre-selector back in my Novice days, with my S76  
Hallicrafter. It had two 6J6's in it, The first a tuned pre-amp in push-pull and 
 the second as a push-pull cathode follower, It added another   TUNED  
circuit to the front end and helped to bring then out of the mud and also kept  High 
power stations down the band from overloading the front end. The  radios of 
today don't have TRF stages in the front end but rely on IF stages for  
selectivity. My SP-600 has two tuned stages before the first mixer. So if it is  
TUNED try it.
 
ED K8OT 



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