[arm-allstar] BBB/Pi or RTCM

Thu Nov 19 06:43:31 EST 2015

It does, Sam. Thank you for taking the time to explain. I keep reading so many different things and its like, OK, which way do I go.

Now you say that you are using BBB located at one site. But am I to assume that for the simulcast you are using the RTCM and they talk to your BBB? Our server is in a commercial data center now but it doesn’t need to be. It could be a RPi2 at one site and they would all talk one another. Our site vendor has 25 linked sites. Doing this would lower the latency. I assume that we could then run a remote base that could talk up to a site that allow other Allstar nodes into the system using a different node number.

Am I on the right track?

From: Sam Nabkey 
Sent: Thursday, November 19, 2015 3:09 AM
To: BeagleBone Black ARM Allstar 
Subject: Re: [arm-allstar] BBB/Pi or RTCM

Consider the RTCM to be an ip phone. It will only talk to itself without a pbx.  Allstar is rhe pbx.  

The RTCM is a stupid controller without a connected server 

Doesn't matter where or what allstar is running on, as long as one the sites with the RTCM is located on the same physical switch as the allstar server. That allows for proper GPS timing between the allstar server and the master RTCM.   In some cases people don't run any radios on this single RTCM.

I use a bbb located at one of my sites and run a simulcast 900 repeater.   Work wonderful 

Does that help?  

On Nov 19, 2015 05:37, "R. Wayne" <allstar at controlservers.net> wrote:

  No, actually it wasn't. Let's not beat up on the new guy trying to understand. OK? He wrote:

  "The RPi2 could be used to replace a PC acid box to interface with the RTCM's at your remote locations."

  If the RTCM is capable of running without a PC of some sorts why the RPi2?

  Just help me understand and if it troubles you you need not reply.

  -----Original Message----- From: Corey Dean
  Sent: Thursday, November 19, 2015 2:04 AM
  To: ARM Allstar
  Subject: Re: [arm-allstar] BBB/Pi or RTCM

  No!  I think that was explained to you right on the first email. Only xipar and the rtcm can vote the way you want.

  Sent from my iPhone

    On Nov 19, 2015, at 4:26 AM, R. Wayne <allstar at controlservers.net> wrote:

    I think I may not be communicating well. Is the BBB/Pi capable of replacing the RTCM in voted operation?

    -----Original Message----- From: David McGough
    Sent: Wednesday, November 18, 2015 11:01 PM
    To: ARM Allstar
    Subject: Re: [arm-allstar] BBB/Pi or RTCM

    Hi,

    Currently, the RTCM is the only solution for endpoints--for true voting,
    adding BBB or RPi2 endpoints won't solve the problem. The software that
    drives the RTCM boards only runs on RTCM's....There is no functional
    equivalent for the other platforms, like the BBB or RPi2.

    Note that when the RTCM was conceived/developed, it preceded these tiny
    high-performance Linux boards by several years.  Now, looking toward the
    future, a software solution may become viable.  And, we've already had
    considerable discussion about this, pondering the direction of future
    development.

    Anyhow, for now, adding RTCM's is your best option.

    73, David KB4FXC

      On Wed, 18 Nov 2015, R. Wayne wrote:

      Thanks. As I have written I am a full time System Administrator and load the

    OS on PC's all the time. We already have a PC in a data center that our
    current RTCM talks to. We need to add remote receivers and there's my
    question. RTCM or use Pi's. Why would I choose Pi's? I know there is a
    reason but I don't know it yet. LOL Please tell me what the secret handshake
    is!!! For the love of Pete. Sorry. I got carried away.

    -----Original Message----- From: David McGough
    Sent: Wednesday, November 18, 2015 10:33 PM
    To: ARM Allstar
    Subject: Re: [arm-allstar] BBB/Pi or RTCM

    Hi,

    The RTCM is currently the only AllStar-based voting solution.
    Technically speaking, you'd have an RTCM at each site where you've got a
    receiver or transmitter. Then, all the RTCM's would connect back to a
    central server (which could be in a data center, etc.) via an IP data
    network. The central server would perform the actual voting action and
    send the resultant audio and telemetry back the the transmitter site.

    You could use a BBB, RPi2 or regular PC as the central server, the RPi2
    or PC being preferred for new installations.

    73, David KB4FXC

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