Yes, I will check the fil voltage as soon as I have time. There is no bias supply. But both decks have large tapped resistors on them that were probably used for bias and perhaps other voltages. You're right about the 806--that would be a possibility--I hope not though because I don't have any.
73, Don Merz, N3RHT --- "A.R.S. - W5AMI" <[EMAIL PROTECTED]> wrote: > On 9/12/06, Don Merz <[EMAIL PROTECTED]> wrote: > > The final deck has a socket for a single tube with > the > > large, twist-lock base and 2 plate-cap-size > > connections for plate and grid caps. Not many > tubes > > fit that description, so I am thinking maybe an > 810 > > goes there? The Eimac tubes are out because they > used > > a pin for the grid--not a full-size plate cap. The > > final deck has a filament transformer (I haven't > > Don, > > Determine the filament voltage. Also, was the bias > supply for the > final in the power supply section that's missing? > If not, what does > the voltage appear to be on it? This would help > narrow down a final > tube. The Eimac tubes above the 250T (450 up) used > the standard .5" > grid and plate caps. The 450T had both the pin and > a .5" cap on the > grid. GE also made some Eimac like triodes such as > the GE806 which > was a close cousin to the 250T only it had .5" caps > on the grid and > plate. Of course there are other possibilities like > Taylor, etc. > > Brian / w5ami > ______________________________________________________________ > AMRadio mailing list > List Home: > http://mailman.qth.net/mailman/listinfo/amradio > Partner Website: http://www.amfone.net > Help: http://mailman.qth.net/mmfaq.html > Post: mailto:AMRadio@mailman.qth.net > ______________________________________________________________ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:AMRadio@mailman.qth.net
