[BULK] - [Amps] NCL 2000?

[GGLL]

    Is that the only type number for them?; I've been searching and only 
have found tubes used as tuning indicators with that specification (4662).

Best regards
Guillermo - LU8EYW.

Dennis12Amplify at aol.com escribió:

> Helge,
>
>I have some Burle, (and RCA), 4662's that I had picked up at a Hamfest long 
>ago from a guy I have bought at least a hundred ceramic tubes from over the 
>past 25 years.
>
> I picked them up because I occasionally have to repair a National NCL2000 
>and was told they were a 'plug in sub.' for the 8122. 
>
> The Burle have pink ceramic bases and the RCA's have white, but they all 
>have the 4662 number on them and 'look' like 8122s.
>
> Can you tell me if that 'plug in sub.' rumor is true or not?
>
> I have not been able to find datasheets on either type so I have been 
>reluctant to try the 'plug in' swap.
>
> As a result, they have just been collecting dust in my shop for 15 years or 
>more.
>
>Regards,
>
>Dennis O. 
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