In a message dated 8/8/2005 9:02:58 A.M. Eastern Standard Time,
cherokeehillfarm@earthlink.net writes:
All of these tubes have worked flawlessly. I think it is a good idea to
purchase the matched tubes, because I believe the matching, although not
done dynamically under load, means that RF Parts themselves have checked the
tubes before shipment. Just one more chance to catch a defective unit
before it gets to you is worth something.
Mike, I too have used RF Parts and Taylor tubes in my 6 meter SB-220
conversions, they tend to be stable and make as much power as any Eimac tube I
have
tried in the same amp. When they match them it seems as though (by the
marking numbers) that the tube is put in a jig, and the resting plate current
is
read on an accurate meter, then marked with the current it draws at idle,
tubes with the same numbers are "matched". I may be wrong on this, but it
seems
that this may be the way they do it. 73 louie W1QJ
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