[App_rpt-users] Allstar RTCM (Radio Thin Client Module) is nowavailable

[Jim Duuuude]

Yeah, that's the general idea. The location of the Linux server running app_rpt/Asterisk can be
more or less anywhere within Internet connectivity of all of the receiver and/or transmitter sites.
Of course, "Internet" can mean either some sort of public Internet connection, or a privately-provided
Internet connection (low-cost microwave link(s), etc).

The only limitation is that an RTCM/Voter module *must* be located on the same LAN as the Linux
server, to at least provide a GPS-based timing reference. A system could be set up with a server
located in some sort of datacenter "on the ground", and all the radios could have an RTCM "on the
hill" with them, and as long as there is Internet connectivity of some sort between each of them
and the server, the system will work nicely. That is providing that there is an RTCM located at
the server location also (whether or not that particular RTCM has radio hardware connected to it
or not).

One minimal Linux server can easily support 1 or 2 dozen RTCM's (on 1 or 2 allstar nodes),
and a larger server could easily support MANY dozens of them on dozens of allstar nodes.
Of course, you REALLY dont want to put too many of them on a single server, being a potential
single point of failure. For pretty much any practical purpose, the reasonable limitation is
the point of failure/redundancy issue, not technical limitations.

I'm not sure if you were clear on this, so I thought I would mention that the RTCM is not just
usable as a GPS-timing-based Multi-Receiver Voting system and/or a Simulcast Transmitter system.
It can also be used as a "generic" radio interface for a conventional (non-GPS-based) either simplex
or full duplex (repeater) radio. The advantage of doing this would be to not have the Linux
host "on the hill" with the radio (as mentioned above). In addition, the RTCM allows for 
portable/mobile operation with a mobile/portable Internet connection in both the GPS-based
and non-GPS-based environments. 

JIM WB6NIL


From: ke6pcv at cal-net.org
To: app_rpt-users at ohnosec.org
Date: Wed, 21 Dec 2011 10:54:18 -0800
Subject: Re: [App_rpt-users] Allstar RTCM (Radio Thin Client Module) is	nowavailable










I have been looking at the Allstar RTCM (Radio Thin 
Client Module) and it really looks like a GREAT product and addition 
to the already cool Allstar hardware. 
 
Among all the other cool features of the RTCM (Radio Thin 
Client Module) like Transmitter Simulcasting and Receiver 
Voting, if I understand the documentation 
correctly you can use this very small Radio Thin Client 
Module at a remote radio site to set up an Allstar repeater node if the 
site has internet connection without a COMPUTER at the 
site?
 
Then you can point the node on the hilltop back to a server on 
the ground somewhere that is easy to get too? 
 
How many total sites can you use Radio Thin Client 
Modules on and point back to a single server on the 
ground?  
 
If this is the case, All I can say is WOW, how 
cool!
 
73
 
Marshall 
 
 
 


  
  
  From: app_rpt-users-bounces at ohnosec.org 
  [mailto:app_rpt-users-bounces at ohnosec.org] On Behalf Of Mark 
  Guibord
Sent: Sunday, December 18, 2011 11:03 AM
To: 
  app_rpt-users at ohnosec.org
Subject: [App_rpt-users] Allstar RTCM 
  (Radio Thin Client Module) is nowavailable


  
  Allstar RTCM Radio Thin-Client Module, an Open-Source VOIP-Based Voting Multi-Receiver and Simulcast Transmit System is now available for purchase.  For more information visit http://micro-node.com/thin-m1.html  Regards,Mark GuibordMicro-Node International
   
   

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