[GreenKeys] newbee AGAIN RE: HAL ST800a

[eugene at hertzmail.com]

Hello weather.
I know next to nothing about these, but I am doubtful that either model
contains a loop supply. Most likely input and output is good old RS-232.
Maybe some other voltage-signaling format (422, 485, MIL-188).

I found this on HAL's website
http://www.halcomm.com/docs/st8000a.pdf

Thanks, HAL!

You know, we have some people on this list who are very knowledgable
about the HAL company (wink, wink)! I would find it very interesting to
read about the history of this company and some of its very famous and
innovative products.  I would love to read about the formation of the
company, the people involved, the ST5,6 and how these products came
about, the people working on them, how the company expanded, the CRT
products, its foray into the government/commercial world, the research
involved, etc.

Hopefully some day someone will write the history of HAL.
Eugene


-----Original Message-----
From: greenkeys-bounces at mailman.qth.net
[mailto:greenkeys-bounces at mailman.qth.net] On Behalf Of weather
Sent: Friday, January 02, 2009 9:23 PM
To: GREENKEYS
Subject: [GreenKeys] newbee AGAIN RE: HAL ST800a

I posted a question earlier today about HAL modem ST800a, to which
someone else added an additional question.  While their added-on
question got response, my question seems to have "fallen through the
cracks."  I had asked about the Hal modem(s) on ebay and their
application/compatability to running the old 15s,19s, & 28's including
supplying loop power and ability to adjust to the 60ma requirements and
the possibility of the unit running multiple machines simultaneously.
What I see tells me this is exactly the application (plus much more)
this unit was built for.  However, my knowledge is SO lacking that
information from experienced/knowledgable sources would be welcomed. 
Also the other poster asked about difference(s) between the ST800 and
ST800a.  I have not seen any response to that, although since I get the
digest version it may come later.  THANK YOU!
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