Re: Tektronix 1A7 and 1A7A Plug-ins


um-gs@...
 

Hi Dave,
today I gave my 1A7 (and the manual) a thorough look and found that there is indeed not a dual-Nuvistor pre-amp installed (as the manual says) but instead a PCB which obviously holds different parts (dual FETs?). The PCB is marked "1334XA".
As you mentioned 15 years ago in the above the "field-installable kit" - that might the be the explanation.
Do you by any chance have more references to this kit (and the schematic)?

Regards, Gordian

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