[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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