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Motorola apx radios on Harris P25 phase x2 TDMA

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BlueMoon2

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Dec 26, 2008
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As the title suggests, I am wondering if motorola apx series radios flashed for project 25 phase 2 tdma will work on a Harris project 25 phase 2 tdma radio system.

My locality has just awarded Harris the contract to upgrade our radio system. We have already purchased several motorola apx series radios and I'm wondering if they will work in the new system. I understand that Harris may have their own proprietary emission standard that they use and I'm wondering if that will work with motorolas even after they have been flashed.


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N2AL

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Apr 11, 2008
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Tennessee
I am not 100% but I believe they will. I believe that P25 standards were built so that each radio manufacturer could produce radios that would work on any P25 system.
 

DisasterGuy

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Aug 24, 2013
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Maryland Shore
Yes, they will work. Certain functions that aren't explicit in the P25 standard such as Over the Air Programming will not

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troymail

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Supply (Lockwood Inlet area), NC
They should - that was supposed to be one of the strengths/points/purposes for P25 - so users weren't locked into a single vendor (more competition, at least in theory). If you have two adjacent counties that run mutual aid and one is a Harris system and the other is Motorola, the radios shouldn't require special patching, etc. to make them work on both system - it should more likely be as simple as switching to a different zone on the radio.

Having said that, we've seen reports of "features" being added by some vendors that are not compatible.

Bottom line, "they should" but you'll want to verify (test) to be sure.
 

Jay911

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Feb 15, 2002
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Bragg Creek, Alberta
I've got a Harris system here (albeit currently FDMA/Phase 1) which I have seen Harris, Motorola, and RELM radios working on. However, the specs in the original bid for this system stipulated very clearly that the system architecture had to be "vendor agnostic", i.e. no bells and/or whistles that were not strictly part of the P25 standard, so no Harris-specific add-ons, or Motorola-proprietary stuff if Motorola had won the bid, etc. In addition, the system admins publish a "Permitted Radio List" - they have received sample radios from manufacturers, and go through a battery of tests to confirm that the radios will function properly on the system. The aforementioned three plus JVCKenwood and Tait have made it onto that list (with possibly others, I don't have the list in front of me right now). If your system's admins do their work right, you should have both these things (a "vendor agnostic" clause so subscribers can bring their own radios to the party, and a "permitted radio" list so subscribers know what radios will work) available once it's time to start getting your radios purchased and installed.
 

sbk1982

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Mar 22, 2015
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Currently going live on a Phase II Harris System and Moto APX radios work fine. Also successfully configured a Kenwood as well.


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