[drats_users] Drats proxy on G2 server progress?

[Gary]

While I think this would work fine in a suburban environment (good outdoor
antennas, etc.), Dstar is a bit challenging here in the city (multipath,
intermod hell). None of the users we have can hear each other, and most do
not have external antennas. But we could probably place a mobile at a
repeater site and buy some more feed line and another antenna. I think we
will try this as soon as 4G launches and the repeater is moved. Although, to
me it just seems to be much more simple if a piece of software on the
existing repeater gateway could handle it.

 

Gary KB2BSL

The Staten Island Digital Group

WG2MSK repeater

 

 

 

From: drats_users-bounces at intrepid.danplanet.com
[mailto:drats_users-bounces at intrepid.danplanet.com] On Behalf Of David
Swartz
Sent: Wednesday, August 11, 2010 1:53 PM
To: drats_users at intrepid.danplanet.com
Subject: Re: [drats_users] drats_users Digest, Vol 24, Issue 9

 

This is a reply to Mike's suggestion about a separate mobile radio to enable
the Ratflector on the repeater.  

 

We decided to run a separate mobile radio connected to the ratflector on the
repeaters frequency to accomplish what he proposed. However we do not run
the mobile collocated with the repeater to reduce the potential of RF
interference to the repeaters receiver.

 

<new paradigm> 

The obvious architecture for D-Rats/Ratflectors is to have a number of nodes
in the field consisting of a simple mobile radio with attached computer
connected to the Internet.  This network of Ratflectors are then connected
to a central regional aggregating Ratflector that has a static known IP
address. Internet connected users connect to this central ratflector.  The
field stations (nodes) announce their availability and frequency by
beaconing their presence as a position report.  As you travel through an
area you connect to this self advertising network of participating stations.
If all of these nodes are interconnected then it doesn't matter which node
you enter the system at, your transmission will be repeated by all.  

 

If the node changes IP address it doesn't matter since the Internet
connected stations don't connect to it directly.  It is the node owners
responsibility to maintain the connection to the aggregating ratflector with
the static address.  Since the nodes all self announce their presence
administration is minimal.  Unlike existing packet digipeating performance
is maintained since each station has only one rf hop with the Internet
providing the backbone.

 

Contention with voice users can be minimal because the nodes do not have to
operate using the local repeater.  The deployment cost is significantly less
than building a full repeater system just to transfer data.  

 

If five hams get together they can build a node with a minimal individual
financial outlay and bring D-Rats coverage to their area.

 

</new paradigm>  

  

 

- Dave Swartz

  Repeater Operations

  Federal Way Amateur Radio Club.

 

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://intrepid.danplanet.com/pipermail/drats_users/attachments/20100811/06dd1a12/attachment.html