Glass is simply a transparent ceramic. Well... More or less, anyway.
Nothing wrong with that as long as the limitations are respected.
Kim N5OP
On 1/23/2015 8:06 PM, Bill Turner wrote:
------------ ORIGINAL MESSAGE ------------(may be snipped)
On Sat, 24 Jan 2015 10:40:33 +1030, Leigh wrote:
Consequently a matched pair or quad set of reputable brand vintage NOS 811A
/ 572B tubes are worth their weight in gold....and highly sought after.
REPLY:
It bothers me to see hams wasting their time and money on tubes made
of glass. This is an obsolete technology which is of historical
interest but really has no place with modern amateur radio.
Ceramic tubes are far superior to glass, period. Yes, they are more
expensive but so what? Good stuff costs more. Always has and always
will.
Please do yourself a favor. Save your nickels and dimes, get a second
job, mow lawns or do whatever it takes but get something that works
great and if not abused, lasts essentially forever.
Ceramic is your friend.
Bill W6WRT
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--
Kim Elmore, Ph.D. (Adj. Assoc. Prof., OU School of Meteorology, CCM, PP
SEL/MEL/Glider, N5OP, 2nd Class Radiotelegraph, GROL)
/"In theory there is no difference between theory and practice. But, in
practice, there is." //– Attributed to many people; it’s so true that it
doesn’t matter who said it./
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