[Boatanchors] E.F Johnson calibrator 250-28 tube?

[Al Klase]

Larry,

The 6BH6 is essentially a 6AU6 with a half-power. 150 mA vs. 300 mA, 
heater.  I'll wager either one will work just fine.

73,
Al

telegrapher at att.net wrote:
> Well what a fine show this is.  Now, which tube is correct?  The 6BH6 
> or the 6AU6.  Or maybe different versions or some were modified?  Who 
> dreams up this stuff anyway?  It's to close to Christmas.
>
> I don't have one of these but i've run into the same thing with a 
> couple of my radios. One manual says one tube lineup and another 
> manual says another tube lineup.  What fun, yes?
>

-- 
Al Klase - N3FRQ 
Flemington, NJ 
http://www.skywaves.ar88.net/