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

[jeremy-ca]

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
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