[App_rpt-users] Thinking out loud

Sun Jun 3 16:13:45 UTC 2012

well, yes, that was exactly one of the things it was designed for...

On the way to Dayton recently, we (Mark K7IZA, Hans AE6TV and I) had exactly that.. An RTCM
connected to a cradlepoint router with a T-mobile USB datacard and a Motorola HT on a 440
channel. It worked very well.

And for this type of an application, if you REALLY want a "no brainer" setup, Micro-Node
offers a subscription-based hosting platform for Allstar Nodes using an RTCM in this manner.
In other words, for people who just want a simple, hassle-free mobile/portable node without
having to "hassle" with a Linux host, etc, they can also buy the service through Mark's company.

Regardless of how you host the node, having the RTCM in a mobile/portable environment is
a GREAT way to go. Its low power consumption (72ma @ 12VDC), small size, and general
ruggedness, not to mention its very simple requirements for Internet connectivity (including
its ability to be behind any number of NATs, etc) make it the optimum solution for this type
of operation.

I highly recommend you giving this a try. You will definitely like it.

BTW, I am in the process of getting access to a picture of the device we took with us to
Dayton, and will post it once I get it.

JIM WB6NIL 

From: adamson_alan at hotmail.com
To: app_rpt-users at ohnosec.org
Date: Sun, 3 Jun 2012 10:02:31 -0400
Subject: [App_rpt-users] Thinking out loud

Thinking out loud

I've been wanting to build a *mobile* node.  On the surface, this seems pretty easy… What makes it complicated is the internet or network connections.

I'm a tmobile subscriber for cell and mobile data.  I decided recently to start building my mobile data carry alongs based upon a cradlepoint router, so far so good.  So my Tmobile mobile device is comprised of a cradlepoint, and their 4G usb FOB.  This works great for what I need it for…. Recently I found myself in an area where I didn't have very good tmo coverage so I grabbed a Verizon 4G lte FOB.  I haven't thought about *incoming* data until working on my linking projects.

This is where my mobile plan fell apart.

It appears that most all of these 4G/LTE providers are going to a Natted private network on the 4G/LTE side.  This isn't true of their 3G network, but is of their 4G side.  Well as you might imagine if you don't have control of the NAT ad port forwarding, you can't put a server on user side of a 4G device :(.

BUT then I had an epiphany (probably late because everyone else is already there)…

The RTCM works so well for remoting my repeater…. Why not just use it as the mobile controller and instead of running a server remotely, just run an RTCM remotely back to a server.  I think this will solve my problem.  And perhaps make this even simpler to deal with along with a 4G type data connection.

Anyone already wandered this path and what are you using?

Thanks,

Alan

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