On 1/29/2015 5:19 PM, Gerald Williamson via Amps wrote:
Not necessarily. Particularly older glass bottles like the 813 and
glass to metal like the PL172 which go gassy with little or no use.
Good 813s are gettiong harder to find and I think PL172s are rare while
the 8295A version brings a premium price.
73
Ro0ger (K8RI)
Bill, he had the right idea; except they last longer if you never turn them
on!
73,
Gerald K5GW
In a message dated 1/29/2015 2:08:25 P.M. Pacific Standard Time,
wlfuqu00@uky.edu writes:
We had a guy in our club that believed that tubes would last longer if you
never turned them off.
Naturally, the tubes were completely flat after he had not used the
amplifier over a period of time.
Practically no emission, but they did glow.
bill =
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