p25 simulcast

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    Exploring Continuous Four Frequency Modulation (C4FM) and Linear Simulcast Modulation (LSM) in VHF Conventional Simulcast Systems

    Hello, I represent a small public safety communications agency situated in central Washington, on the east side of the Cascade Range. Currently, we are in the process of transitioning to the P25 standard. Our focus has turned toward understanding the implications of Continuous Four Frequency...
  2. C

    how far can I pick up a TGID (from a local repeater)

    (to explain why I'm asking instead of trying, I'm currently in Lakehills TX and I can't try it.) This question is about "can you listen to all TGIDs on a large area simulcast system, or will you only be able to hear the TGIDs within their individual ranges? My logic is that since all of the...
  3. I

    SDS100/SDS200: SDS100 P25 Simulcast Site NAC

    As I am programming my SDS100 for P25 Simulcast cells in my area, I noticed the option to set the site NAC code. Does this do any benefit to the scanner by programming the NAC? Also, would this help ensure the scanner is monitoring the correct cell?
  4. D

    Johnson County P25 Public Safety System Changes J-COMM

    Hi There, The UIEMS scanner on Broadcastify has been down for a few days now. It's no longer picking up any P25 traffic for J-COMM. It managed to pick up some UHF AirCare traffic (so it is still scanning). But nothing on Johnson County P25. Have they rebanded? Gone encrypted? New Control...
  5. C

    Linn County Iowa P25 system

    This system is now on the air. Licenses were granted July 2012 and the first site Boyson Road is on the air with a control channel. There was no traffic on it as of Saturday, Oct 20 2012, Linn County ops are proceeding on VHF. Since they are wideband I expect they will abandon the vhf by Jan...
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