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List:       classiccmp
Subject:    [cctalk] Re: Looking for NORTRONICS Read/Write head for IBM 5100/5110/5106 tape unit
From:       Christian Corti via cctalk <cctalk () classiccmp ! org>
Date:       2023-10-26 8:22:28
Message-ID: f3e66a8e-e2ea-fadc-b3b4-3571b2bd5c6f () informatik ! uni-stuttgart ! de
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On Wed, 25 Oct 2023, Mark Perullo wrote:
> halves".  One half looks like an "upper and lower" for the two tracks, then
> next to that is a "vertical bar."   I've never quite understood what that
> vertical bar is - I assume a WRITE portion of some sort??     The ones in
> the ebay listing don't have this "vertical bar."

That is the erase head.

> Then the pins on the back of the head:  the one I have for my 5100/5110 is
> "6 small pins" next to "4 fat pins" (the 4 fat pins are in line with the
> "vertical bar" mentioned above).   Of all the heads I came across, I could
> find the "6 small pin" configuration, but never the "4 fat pins."

My guess (System Logics Manual page 435 seems to support this)
6 small pins: the two center-taped read-write-heads
4 fat pins: the two erase heads

Christian
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