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

[telegrapher at att.net]

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?

Larry
W0OGH


William Shadid wrote:

> 
> I have a 1962 E. F. Johnson catalog and on page 22 it clearly shows and 
> describes thje 250-28 Calibrator. It also calls out the original tube as 
> the 6BH6 that the rest of you have mentioned. Only $18.95 in 1962 dollars!!
> 
> 73,
> 
> -Bill, WA9MXQ
> 
> 
>> ----- Original Message ----- From: "jeremy-ca" <km1h at jeremy.mv.com>
>> To: "Bruce Ussery" <twc9198764412 at earthlink.net>;
>> <boatanchors at mailman.qth.net>
>> Sent: Monday, December 10, 2007 10:08 PM
>> Subject: Re: [Boatanchors] E.F Johnson calibrator 250-28 tube?
>>
>>
>>> Mine has a 6BH6 and is also in a HQ-140X. I also like the Hammarlund
>>> tuning and the great bandspread.
>>>
>>> Carl
>>> KM1H
>>>
>>>
>>> ----- Original Message ----- From: "Bruce Ussery" 
>>> <twc9198764412 at earthlink.net>
>>> To: <boatanchors at mailman.qth.net>
>>> Sent: Saturday, November 10, 2007 8:37 PM
>>> Subject: [Boatanchors] E.F Johnson calibrator 250-28 tube?
>>>
>>>
>>> I recently brought an HQ-140-XA back to life. The more I play with it 
>>> the
>>> more I like it's smooth, accurate tuning and good audio. A previous 
>>> owner
>>> added a 100 kc crystal calibrator (and did a neat job), but it's not the
>>> XC-100 model that is mentioned in the manual. It's an E. F. Johnson 
>>> 250-28
>>> which looks pretty similar. It's working OK, but the tube number is
>>> scraped off. If it croaks (probably not in my lifetime), I don't know 
>>> what
>>> to replace it with. My usual searches revealed to details of this unit,
>>> only that it exists is other hams shacks. So-- does anyone have one or
>>> know what the tube is? I promise to add a nice label for the next owner.
>>>
>>> Bruce
>>> WA4ZLK
>>> _______________________________________________
>>>
>>
>>
>>
>> End of Boatanchors Digest, Vol 47, Issue 14
>> *******************************************
>>
> 
> _______________________________________________
>