On 03/13/2018 08:33 PM, Al Kossow via cctalk wrote:
> There are two gzip'ed files up now of analog digitized 9 track data under
> http://bitsavers.org/projects/9track containing two files of 16 bit 
> incrementing
> data patterns blocked 512 bytes/blk and the tach signal from a Qualstar 1260 
> running
> at 50 ips.
> The data can be viewed using Salea's Logic app in simulation mode if anyone 
> has burning
> curiosity what a 1/2" tape block looks like.
> I made these as test data today for Len Shustek's 9 track readtape project
> https://github.com/LenShustek/readtape

If anyone's curious, the 800 NRZI one expands to 2.2GB.

Al, did you see this patent by Kennedy:



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