Lou,
Thank you for your reply. Ok, so I am going to start with the 245VAC tap. I
will then search the list archives for the proper procedure for measuring
the filament voltage after that... remember complete newbie to tube amps
here (built a couple bricks in the past).
Peace
James - AD1L
--- Gudguyham wrote:
> Hi James, You are VERY fortunate to have such
> "nice" line voltage. But to
> the point, the most important thing here is the
> filament voltage. You want
> your filament voltage to be 5 volts. Eimac will
> tolerate 5.25 volts, but you
> will get better tube life at 4.8 to 5 volts. The
> thing to do is to actually
> measure your filament voltage using the 245 tap and
> see what it is. If it's
> high go to the 250 tap. If it is spec, you can
> stay with 245 tap. The tube
> must be in the socket when measuring and measure
> right at the filament pins
> of the tube socket. As far as HV goes, any tap is
> OK for that. The lower the
> tap, the higher your plate voltage will be. You
> won't notice a difference
> of "on the air" signal but you will get a tad bit
> more power out on a lower
> tap. The filament voltage will dictate. 73 Lou
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|