[GreenKeys] I'm back....M28/M35 parts interchangeability/ST-8000A connectors

[Bill Henry]

John Duggan - and Greenkeys:

The rear panel connectors are the "Catch 22" of the ST-8000A.  They are all 
"special order" - and very expensive.  The accessory kit of connectors for 
the ST-8000A is $500.00 (HAL P/N 970-08005).  Sorry about that but it was 
the U.S. Government, not HAL who picked these things.  These are the same 
connectors found on the Frederick 1280A/M - and we were required to be 
"form, fit, and function" compatible.   The Data I/O and Audio I/O are 
essentially identical connectors - but with a unique difference.  Compared 
to the "standard MS27508E14F35S", these have a 79 degree insert rotation 
for the Data I/O and 66 degree rotation for the Audio I/O 
connection.  Definitely "special order".   You will have a hard time 
finding these things surplus.

BUT - be inventive.  The pins are all #22, a standard pin size.  Pick up 
some MIL connectors at a hamfest (male pins) and chop the insert insulator 
apart to get the pins.  Solder the required wires to these individual pins 
and push each one into the appropriate MIL connector on the rear 
panel.  Use some "super high quality duct tape" to hold the pins in place - 
a genuine "Red Green solution".  Put the modem in a rack and nobody will 
know the difference.

OR - replace the MIL connectors with something sensible - virtually any 
other connector will be easier to obtain than these, even another MIL 
connector (MS3100 series, for example).

OR - if you really want to spend the money, we have 4 or 5 of the accessory 
kits left.

73,
Bill Henry



At 12:36 PM 4/1/2008 -0700, John Duggan wrote:
>Hi all,
>After a near fatal motorcycle accident, I'm back!
>I have acquired a M28 ASR, the man I got it from also
>has a bunch of M35 parts.
>
>My research tells me that the M35 is an ASCII variant
>of the M28, but how much of it is the same?
>
>Also, some time ago, I found a ST-8000A on ebay, the
>photos did not show the rear panel, I didn't know what
>I was getting into, these connectors look very
>expensive! Is there a source fo these? (Mr. Henry?)
>
>My e-mail has changed from c3854 at pacbell dot net to
>radiounity at sbcglobal dot net.
>
>Any help would be great!
>
>Thanks
>73 DE KG6EOT
>NN NN
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