[Collins] 32S-3 final neutralization question ??

[Glen Zook]

Having one 6146A and one 6146B is definitely "bad
news"!

Look between the 6146 tube sockets.  If there is a
ceramic trimmer capacitor then this is the "old"
neutralization circuit and using 6146B tubes will
almost certainly cause the capacitor to "burn up".  If
the capacitor is an air variable then the transmitter
has the newer neutralization circuit and the 6146B
tubes should work fine.

You can "mix" a 6146 with a 6146A / 8298.  But, NEVER
mix a 6146B / 8298A with any of the earlier version
tubes.

The article on the 6146 family of tubes is again
available from the K9STH website (URL of which is
listed at the end of this message).

Glen, K9STH


--- pmills7 at houston.rr.com wrote:

I am working on a RE 32S-3 and need to replace the
finals.  Currently there is one 6146B and one 6146A
installed which obviously is not good.  Is there any
way to determine if this unit has the proper
neutralization components installed to support the -B
tubes?









Glen, K9STH

Website:  http://k9sth.com

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