You'd think I would know better by now. I should never attack these problems when it's past my
bedtime..............
The original document for the T-4XC is correct, involving Pin 6 and Pin 9 of
the 6EV7 socket.
The TR-4C version is NOT correct, as Drake reversed the triodes in the TR-4C, AND used that
convenient Pin 9 that is not used by the tube and instead appropriated it for a tie-point.
The TR-4C needs the 1.5k, 1W resistor in series with the lead to Pin 1 of V19. I don't have a TR-4C
open at the moment, but there needs to be a terminal where the lead from the relay to Pin 1 and the
'new' 1.5k resistor can be anchored. Suggestions are welcome!!!
So again, sorry for all the confusion, and I'll see what can be done about the
TR-4C.
--
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
<www.k4oah.com>
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