[Hallicrafters] HT37 problems solved (?)

KB9GKC at aol.com KB9GKC at aol.com
Fri Sep 16 16:29:02 EDT 2005


 
In a message dated 9/16/2005 1:05:59 P.M. Central Daylight Time,  
k9tr at dtnspeed.net writes:

You will  probably find sideband suppression doesn't match that of filter 
type rigs,  but it is quite usable. 


Hello HT-37 Fans,
 
The sideband rejection is 40db, not bad.  The phasing setup was  abandoned 
because filtering the unwanted sideband was cheaper and does not need  
adjustment.  But the audio of the HT-37 is second to none.
 
Also the when replacing the 12AT7 tubes in the phasing setup an alignment  
needs to be done and will align differently with each set of tubes installed,  
this is why you are experiencing your failure to null the carrier.
 
73
Douglas



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