Ted -
Why do you say it's failed? They're pretty tough tubes, and relay
problems are usually somewhere else.
There are several subs that 'work', but none is a good as the 6EV7. The
6EV7 is becoming expensive, ($10,) but so are all the common subs.
The 6AQ8 will work with the addition of a 47 ohm, 2W resistor in
parallel with the filament.
The 6FQ7 is a good sub, but is also $10.
The 6CG7 is the least expensive of the bunch at $5, but is worked pretty
hard in place of the 6EV7.
So if you can find one of the above at a hamfest for a couple of bucks,
you can do ok.
73, Garey - K4OAH
St Charles, IL
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
<www.k4oah.com>
Ted Wright wrote:
Hi Guys
Anyone know of a sub for a bad 6EV7 in my T-4XB . turned on the drakes
and found this tube was bad ??
Hamfest on Sunday here in Pa . I'm sure I can find one their but can't
help but wonder if any subs are around..
Ted
n3zrx
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