Aquarius Quick Disk drive
The Aquarius Quick Disk system, produced by Radofin Electronics, allowed up to 100K of data to be saved on double-sided 2.8" disks (50K each side). Data is recorded in a 'spiral' pattern, rather than in concentric circles.
Up to 2 drives can be connected together.
- Data transmission rate: 101.6K Bits per second.
- Density: 4410 BPI.
- Disk type: 2.8" double-sided.
- Disk capacity: Up to 100K, 20 sectors per side, 2.5k per sector.
Although marketed as a floppy-disk drive, the Aquarius Quick Disk can more accurately categorised as a 'stringly-floppy'-style system, since 'disk' access is sequential rather than random. The maximum seek-time is approximately 8 seconds.
Radofin also produced Quick disk drives for its Dragon computer and a line called Triton Quick Disk for the Commodore 64, Spectrum and MSX.