In a message dated 12/26/03 10:21:10 PM Eastern Standard Time, KD7EFQ@aol.com
writes:
> Hello, I have a Ten Tec Titan 425 amp that takes the EXPENSIVE 3CX800A7
> tubes. I am considering purchasing a set of brand new 3CPX800A7's for spares
> while
> I can afford It. Does sitting on the shelf in a controlled temperature
> environment for several years degrade the quality of these tubes in any way?
> I
> understand the 3CPX800A7 is a direct drop in replacement for the older
> 3CX800A7's.
> If this is in error, Please let me know. Thank You.
>
I do believe it is a drop in for the 3cx800 itself as far as I have heard. I
do not think that there will be much of a problem with the tubes if they have
been on the shelf. There may be a procedure you can follow at start up like
running the tube for several hours before applying plate current or something,
but I don't think it is a problem. I am sure others may know better, but as
I recall I have used older tubes with no problems. The ceramic tubes are
pretty good in that regard opposed to the glass envelope tubes. I have a Titan
425 amp also. 73 Louie
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