On Tue, 18 May 2010 14:27:43 -0400, Roger <email@example.com>
> but like Carl I'd be
>concerned about why the heater opened.
>Even pulls are not free and the 8877 is an expensive tube so I'd want
>some insurance that the replacement would not be going bad any time soon.
The 8877 heater is very sensitive to over voltage. I was doing some
bench testing once and accidentally applied 6.3 volts instead of 5 and
the heater blew immediately.
A very expensive mistake. Live and learn.
73, Bill W6WRT
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