[TrunkCom] historical EDACS question

[Michael W. Scheel]

 From what I remember (it was a long ago for some of it). General 
Electric setup the GE-MARC infrastructure and the local market was 
covered by the GE affiliated radio shops. RACOM a GE shop in 
Marshallstown. When the EDACS system came out they started to setup 
their network in the early 90's buying other local shops.

I never really got into 800mhz or trunk scanning till the 235XLT came 
out. So I only remember the press releases and various newspaper items.

Jeff Kenyon wrote:
> Did this later evolve into Racom, meaning these systems?  Were they
> purchased by Racom?
> 
> 
> 
> 
> 
> On Fri, 4 Nov 2005, Michael W. Scheel wrote:
> 
> 
>>At one time there was a very intensive network of G-MARC systems in
>>Iowa. Mainly marketed to farmers and rural business. They were several
>>still active here in eastern Iowa at least a couple of years ago.
>>Davenport Iowa had a large one with five channels, But I can't remember
>>hearing it in the last year. Some systems were only one or two channels.
>>
>>The format has a very annoying tone superimposed on the audio which
>>could be notched out with a filter. But you had to push scan after the
>>audio dropped off. The entire conversation usually stayed on the same
>>channel. G-Wiz board automated the sequence of notching and resuming the
>>scan, but I never had one.
>>
>>There are some models of mobiles that are dual-capable for EDACS and
>>G-MARC. Not sure about any handhelds.
>>
>>That exhausts my knowledge of G-MARC
>>
>>Jeff Kenyon wrote:
>>
>>>Hi everyone, I was just wondering a few things, and they have to do with
>>>EDACS.  When was the first EDACS system brought on line and where?  I also
>>>was wondering what was the old GE-MARK trunked format like, and are there
>>>still any GE-MARK systems out there?  I also was wondering about EDACS,
>>>and is it going out with OpenSky replacing many systems in the future?
>>
>>
>>--
>>==================================================================
>>Michael W. Scheel  N0NGL  //  ARRL // DARC // MBRS // TAPR
>>Davenport IOWA      // RCMA IA-011 // IPMS/US #25517 QCSMS
>>personal website  -  http://www.n0ngl.net/
>>Quad-Cities (IA-IL) Scanning website - http://www.qcscan.com/
>>Quad-Cities Scale Modelers Society - http://www.qcsms.org/
>>==================================================================
>>
>>
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-- 
==================================================================
Michael W. Scheel  N0NGL  //  ARRL // DARC // MBRS // TAPR
Davenport IOWA      // RCMA IA-011 // IPMS/US #25517 QCSMS
personal website  -  http://www.n0ngl.net/
Quad-Cities (IA-IL) Scanning website - http://www.qcscan.com/
Quad-Cities Scale Modelers Society - http://www.qcsms.org/
==================================================================