Real tape drive densities

[Curious Marc]

Thanks for the details. Seems like the goldilocks unit, and of course one that I can't find any documentation for. Can you confirm it can read and write 9 track formats in PE 1600 cpi?
Marc

> On Feb 11, 2016, at 2:28 AM, Christian Corti <cc at informatik.uni-stuttgart.de> wrote:
> 
> On Wed, 10 Feb 2016, CuriousMarc wrote:
>>> Note that Christian Corti stated that his drive is capable of 9-track
>> operation.  That's an E.
> 
> It is not an E.
> 
>>> (Apparently that will also write 9-track PE at 1600bpi, but it will write
>> 9-track NRZI at 800bpi).
> 
> I would know that ;-)
> 
>> Interesting. So what model do you think he has? For example, from the manual
> [...]
>> That's why I thought he had a 7970A or a 7970B (-136), that can read and
>> write 200, 556 and 800 NRZI. This would match all the front panel buttons we
> [...]
> 
> I have a 7970B (-236) with options 127, 006, 007, 012 and 023.
> 
> More and better pictures are here now:
> http://computermuseum.informatik.uni-stuttgart.de/pics/hp1000/7970/
> 
> Christian