Value of 7-track TU10

william degnan billdegnan at
Mon Sep 19 12:16:49 CDT 2016

Is there a thread with more details?  I assume this is a master drive, the
cards installed indicate whether it came from a pdp 8/9/10/11.  Which is
it?  How is the power supply?


On Mon, Sep 19, 2016 at 12:34 PM, Noel Chiappa <jnc at>

> So what do people think the (monetary) value of a 7-track TU10 master drive
> is? I have no idea what these older vacuum-column drives are worth - don't
> recall ever seeing on for sale. This one is in good condition, and has all
> its
> Flip Chips.  The 7-track is a plus in some ways (rarer), and negative in
> others (can't read old 9-track tapes, which are probably more common than
> 7-track).
>     Noel

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