[Amps] Alpha 87A - Gettering NOS 3CX800A7's

[Carl]

There is no screen in a triode and running them with just the bias and HV is 
fine but if you want to be uber safe do not connect the anodes.

Carl
KM1H


----- Original Message ----- 
From: "Jerry" <jsternmd at att.net>
To: <amps at contesting.com>
Cc: "john starr001" <jstarr001 at hotmail.com>
Sent: Friday, March 29, 2013 11:43 AM
Subject: [Amps] Alpha 87A - Gettering NOS 3CX800A7's


>I am sending this on behalf of John who has not been able to get permission
> to post yet.  Please reply either to the List or to him directly at
> jstarr001 at hotmail.com.
>
>
> I have an Alpha 87a and would like to replace with 20 year old NOS 
> 3CX800A7
> pair.  These have never been used.  I would like to getter the tubes by
> running them for 1-2 days but I have no setup other than the 87A.  I 
> believe
> the 87A applies HV and screen voltage after a 3 minute timer period.   As
> long as I don't apply any RF signal, would it be harmful to the tubes to
> insert them into the 87A and let them cook for a day or so with HV 
> applied?
> 73
> john
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