Re: HP65 which magnetic cards ? Message #3 Posted by Thomas Chrapkiewicz on 3 Oct 2010, 9:53 a.m., in response to message #2 by Dieter
Yes; as mentioned both are usable in the HP65.
When the HP65 was first released, your top card was the only card available. These cards were double-sided, although HP did not publicized this fact.
As the HP67/97 was released, the double sided cards were released, and us HP65 users were made (formally) aware of the double-sided property. Then these same cards were usable with the HP41 series. I believe the 67/97/41 used higher density recording methods, but the magnetic properties of the cards were identical.
There are some nuggets of this information in the HP65 notes with these details. If anyone is interested I will try to find those.
TomC
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