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" <[email protected]> To: "Discussion of AM Radio in the Amateur Service" <[email protected]> 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 > circuits. > > The resistor in series with the filament reduces the no-signal d-c level > on > the output. The no-signal d-c level is caused by the tube contact > potential. > If not reduced it may cause a delay voltage to be present. > > Maybe, maybe not. My WAG. > > Back to spending my wife's inheritance. > > > K7DFW > > > > ..._._ > > ______________________________________________________________ > Our Main Website: http://www.amfone.net > AMRadio mailing list > Searchable Archives: http://www.mail-archive.com/[email protected]/ > List Rules (must read!): http://w5ami.net/amradiofaq.html > List Home: http://mailman.qth.net/mailman/listinfo/amradio > Post: [email protected] > To unsubscribe, send an email to [email protected] with > the word unsubscribe in the message body. > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/[email protected]/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Post: [email protected] To unsubscribe, send an email to [email protected] with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
