[time-nuts] Tektronix TM500 extender cable kit

[David C. Partridge]

Hi Mark,

After all the effort you just put in, you'll be a touch annoyed that Jamma
Boards have done a kit for TM500 extenders for ages ... OTOH you may know
about them and have decided you could do better.

<http://www.jammaboards.com/store/tektronix-tm500-series-extender-kit-tm500-
kit.html>

Regards,
David Partridge 
-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Mark Sims
Sent: 04 August 2014 05:27
To: time-nuts at febo.com
Subject: [time-nuts] Tektronix TM500 extender cable kit

I just finished laying out a small circuit board for building an extender
cable for the Tek TM500 series mainfames / modules.  Prototypes are off
being fab'd at OSHPARK.  Should be here in a couple of weeks.  It uses two
39/40 pin ribbon cables (all the power pins use two wires)... e.g.  IDE/PATA
disk drive cables.
I know LOTs of us have and use these venerable old workhorse machines.  They
are well documented and easily maintained (particularly if you have extender
cables).  Is there any interest in purchasing a kit of all parts to build an
extender cable.   With a moderate amount of interest the price  looks like
it would be around $20 per kit plus shipping (probably around $6 for
shipping in the US for as many that can be stuffed in a small priority mail
flat rate box... most serious TM500 users will want 2 cables for the wide
modules).  Kit cables would be 18-19" long.   TM500 extender cables have
been selling on Ebay for $150-$350! 		 	   		  
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