Question About 0B2 Voltage Regulator Tube

[Mike Hardie]

Heath enthusiasts:
The 0B2 tube in a recently acquired HG-10 VFO glows blue-green when
operating, instead of the orange that I'm used to.  This is what I would
expect from a tube that air had leaked into.  The voltage regulation seems
just fine.  Are there different types of 0B2 that use different gases?

Mike

Sponsored by the City of Tempe 

Listserver Submissions:  heath at listserv.tempe.gov
Listserver Subscription: listserv at listserv.tempe.gov - "subscribe heath 'name' 'call'"
Listserver Unsubscribe: listserv at listserv.tempe.gov - -"signoff heath"