|[AMRadio] HRO question for the day|
qedconsultants at embarqmail.com
Thu Dec 17 16:40:14 EST 2009
Interesting idea, as in boiling off fewer electrons to pile up around the
cathode? not clear to me what effect that would have one way or another.
----- Original Message -----
From: "ROLYNN PRECHTL K7DFW" <k7dfw at clatskanie.com>
To: "Discussion of AM Radio in the Amateur Service"
<amradio at mailman.qth.net>
Sent: Thursday, December 17, 2009 3:19 PM
Subject: Re: [AMRadio] HRO question for the day
>> > National decided in the HRO50 design to use a 4.3 Ohm resister in
>> > series
> with the fil of both 6H6 dual diodes, ( noise blanker and detector)
> dropping the fil to about 5 v.............
> Perhaps it is for this reason, a method that is used in some other diode
> The resistor in series with the filament reduces the no-signal d-c level
> the output. The no-signal d-c level is caused by the tube contact
> If not reduced it may cause a delay voltage to be present.
> Maybe, maybe not. My WAG.
> Back to spending my wife's inheritance.
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