On Fri, Jan 4, 2019 at 10:24 AM André Fachat <afachat@gmx.de> wrote: > > > > Am 3. Januar 2019 20:01:30 schrieb "Mike Stein" <mhs.stein@gmail.com>: > >> I wonder if part of the answer to Andre's original question may be the fact that Bits per inch is not necessarily the same as Flux transitions per inch/mm... > > > Absolutely. 300 Oersted media had 5900 flux transitions per inch, which gives 2900 bpi using FM due to the many clock bits needed, or 5900 bpi using MFM. QD was the same media, only was defined for 96/100 tpi instead of 48 tpi. Where did you find a reliable source about max flux transitions VS media coercitivity? I haven't been able to find any source about this. All the sources I have report BPI figures, that obviously depend on the modulation. FrankReceived on 2019-01-04 11:01:31
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