[Heathkit] H/Z 151-series hard drives

John and Linda Miller jandlmiller at bellsouth.net
Sun Jul 1 06:57:09 EDT 2012


Would like to find in operational condition these old RLL (Run Length 
Limited) hard drives from the PCXT era, or others that would 
plug-and-play.



I built the H/Z 151-series PCXT with amber monitor lo those many years 
ago, with two 5 1/4 floppies, and with Ray Massa's help from Studio 
Computers in MI, move one floppy to external with power supply, and 
added two hard drives internally.



RLL hard drives had weird sizes such as 33 MB and 49 MB etc.



I am restoring that computer, one of my first computer kit building 
projects.  The ones that I have crashed quite sometime ago, are 
described as:




1) Miniscribe Serial MS III C 46107 FCC ID E8D5IMP3000 Franklin Telecom 30 MB Model F/I-30 Serial RLL 305997 Phase XP





2) Seagate ST-157R 40 MB 44640012 N55AQAAAPR 11 Z





The Miniscribe lasted well beyond ten years; the Seagate crashed a week after the warranty expired.



Any ideas?



John W0IKT







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