MK5017AA - i NEED ONE

[NSOMMER]

PART 443-601 FOR DIGITAL CLOCK

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[c4urs11]

On Sat, 26 Apr 2014 04:18:03 +0000, NSOMMER wrote:

> PART 443-601 FOR DIGITAL CLOCK

Seems to be an unobtainium.
Checked this Yahoo group message:
https://groups.yahoo.com/neo/groups/HeathkitClocks/conversations/topics/883

All
I have designed and tested a crossover board for the larger Mostek MK5017AN
chip so it can be used in the GC-1005 and GC-1092 clocks. Since its nearly
impossible to obtain the orriginal Mostek MK5017AA used in the heathkit clocks
I developed a crossover board to work with the readly available Mostek
MK5017AN chip which is 4 pins larger than the one used by Heathkit. For a copy
of the plans I have posted the PDF file here.
http://www.weatherscience.net/manuals/mk5017_crossover.pdf
I hope this helps those in need of a retrofit. If you are looking for a sourse
for the larger MK5017AN chip please let me know.
Thanks
Steven

Maybe this helps?

Cheers!