4 Jun
2018
4 Jun
'18
2:15 p.m.
On 06/04/2018 11:20 AM, Rich Alderson via cctalk wrote:
For decades, I remembered the lowest density for
magnetic tapes as 225 bits/in,
not 200. I have never been able to find the number "225" in any manual since
starting the project which became the museum 15 years ago (sob!), but it still
hangs around in my mind and pings whenever I see "200BPI" mentioned.
Nope. I've seen 248 mentioned and I have period-specific tapes that are
declared to be 200 bpi on the label and then there's this:
http://www.digitalheritage.de/peripherals/cdc/604/604.htm
Note the density indicators on this panel from a CDC 604.
--Chuck