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  • #16
    Several of our county departments were able to get FEMA grants for equipment for the 460 MHz P25 system the county is installing. The P25 mandate has been around for a few years, but included only P25 capability, not actual programming for the technology. Thus it applied to agencies trying to secure new radios for legacy systems (VHF High and above) that were not digital.
    Opinions my own. Standard disclaimers apply.

    Everyone goes home. Safety begins with you.

    Comment


    • #17
      LVFD301 had a question: What is a FirstNet Zone ?

      1) "FirstNet is the only nationwide broadband network dedicated to public safety. Rising from difficulties communicating during the aftermath of the September 11th attacks, FirstNet delivers a single, nationwide, interoperable LTE network purposely built to enhance communications across the entire public safety community. It?s being built with AT&T in a public-private partnership with the First Responder Network Authority (FirstNet Authority) ? an independent agency within the federal government." (From AT&T).

      The FirstNet backbone is apparently based on LTE technology, which is what many cellular phones use. And yes it uses the 700 spectrum. And yes it is both data and voice capable. Apparently FirstNet will be able to use certain cell phones as well as computers, laptops, etc. that have LTE connectivity. Currently it has very limited coverage.

      2) DTRS (Digital Trunked Radio System) is a digital based radio system that has been around since the 90's and uses both 700 spectrum and 800 spectrum frequencies. Thus DTRS is inherently different from FirstNet. With DTRS, each 16 Talk Groups are organized into a Zone. Much like 16 VHF channels are usually organized into a bank (of Channels). I suspect that since FirstNet is LTE based, there will be no Zones or Talk Groups. Each device will be connected by a number (code) similar to an IP address.

      So far, FirstNet has limited coverage and applications are under development. It may be that since AT&T is the only provider of FirstNet, AFG may not yet be willing to fund grant monies to join FirstNet.

      In our case, the State of Colorado and our local County have spent millions upon millions of dollars developing a state-wide DTRS system. Many local municipalities (that have fire departments and police agencies) utilize DTRS for public safety, but also for school districts, road and bridge departments, and other municipal agencies.

      Unless the Federal Government spends hundreds of millions if not billions of dollars to support FirstNet, I suspect that primarily densely urban departments with communication budgets of millions and millions of dollars will be the primary users of FirstNet.

      Please let me know if any of this is incorrect.


      Comment


      • #18
        Originally posted by AsstChief132 View Post
        LVFD301 had a question: What is a FirstNet Zone ?
        <SNIP>
        2) DTRS (Digital Trunked Radio System) is a digital based radio system that has been around since the 90's and uses both 700 spectrum and 800 spectrum frequencies.
        Digital systems also use the 400 MHz UHF region. The military P25 systems were actually in the 380-400 MHz region when installed, and at least one military trunked/digital system used VHF-High Band when implemented a dozen years ago.

        A lot depends on the availability of bandwidth and the region where the system is being installed. Cities are more likely to be in the 800 (and 900) range, rural in the 450 range, although FDNY is running at 480 (very narrow band - five decimal places)

        In addition to P25, folks are using DMR (MotoTRBO) and Harris's "OpenSky," which is not currently scannable. And that's why some municipalities are using it.

        I'm sure there's still some of the original proprietary systems out there, like EDACS.
        Opinions my own. Standard disclaimers apply.

        Everyone goes home. Safety begins with you.

        Comment


        • #19
          Originally posted by AsstChief132 View Post
          LVFD301 had a question: What is a FirstNet Zone ?

          1) "FirstNet is the only nationwide broadband network dedicated to public safety. Rising from difficulties communicating during the aftermath of the September 11th attacks, FirstNet delivers a single, nationwide, interoperable LTE network purposely built to enhance communications across the entire public safety community. It?s being built with AT&T in a public-private partnership with the First Responder Network Authority (FirstNet Authority) ? an independent agency within the federal government." (From AT&T).

          The FirstNet backbone is apparently based on LTE technology, which is what many cellular phones use. And yes it uses the 700 spectrum. And yes it is both data and voice capable. Apparently FirstNet will be able to use certain cell phones as well as computers, laptops, etc. that have LTE connectivity. Currently it has very limited coverage.
          Uh.... yeah. Actually my question is what was a net-first zone on your two way radios. Net-First is your words, not mine.

          The 700 mhz BROADBAND portion of the 700mhz band is also known as "band 14" which will ultimately be Firstnets home, presently it operates on a combination of band 14 and the cellular bands. No two way radios such as the XTS, APX, etc are capabile of band 14 hence my other confusion about a first net or net first zone in your two way radios. Perhaps it is bridged to a VoIP system on firstnet?

          What exactly is the net-first bank used for?



          Originally posted by AsstChief132 View Post

          2) DTRS (Digital Trunked Radio System) is a digital based radio system that has been around since the 90's and uses both 700 spectrum and 800 spectrum frequencies. Thus DTRS is inherently different from FirstNet. With DTRS, each 16 Talk Groups are organized into a Zone. Much like 16 VHF channels are usually organized into a bank (of Channels). I suspect that since FirstNet is LTE based, there will be no Zones or Talk Groups. Each device will be connected by a number (code) similar to an IP address.

          So far, FirstNet has limited coverage and applications are under development. It may be that since AT&T is the only provider of FirstNet, AFG may not yet be willing to fund grant monies to join FirstNet.

          In our case, the State of Colorado and our local County have spent millions upon millions of dollars developing a state-wide DTRS system. Many local municipalities (that have fire departments and police agencies) utilize DTRS for public safety, but also for school districts, road and bridge departments, and other municipal agencies.

          Unless the Federal Government spends hundreds of millions if not billions of dollars to support FirstNet, I suspect that primarily densely urban departments with communication budgets of millions and millions of dollars will be the primary users of FirstNet.

          Please let me know if any of this is incorrect.

          Firstnet coverage is great anywhere AT&T has coverage, and the band 14 buildout is moving along quickly. 95% coverage in each state. I suspect your prediction is way off. Firstnet is funded by AT&T primarily - as part of a spectrum swap.

          DTRS can be on UHF, VHF, 700, and 800. Many hybrid systems going in for states that are VHF/700/800.

          But thank you for your input.

          Comment


          • #20
            My Bad ! The Zone being added to our DTRS 700/800 system is being named Net First, which I believe is a poor name for a DTRS Zone since the name is co close to FirstNet.

            I believe that the success of FirstNet will be in the quality of the data applications and the ease in which those applications can be assimilated into the fire service. The old "If we build it, they will come" does not generally apply within the fire service. If the data applications are generally accepted and utilized, voice communications will follow.

            Comment


            • #21
              Well, Firstnet brings more to the table than standard cellular. All you can eat no throttling, coverage (When it is fully built out) and purpose built phones such as the Sonim XP8, with all of its accessories. And priority. Real, invasive priority. No one is offering that except Firstnet. The others that advertise it are non invasive - ie, they make you wait until a path becomes available. Firstnet can knock people with lower priority off the system to allow you access.

              And COWS. 72 or so COWS across the country, 2 day or less for them to get them to your site, turn them up, and have service. No cost. All it takes to activate is a phone call. Much quicker than most cell provider situations. It rocks. They will even send some cradle points next day, or same day if you are near one of the regional people that has one.

              Comment

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