LMR 100


The LMR 100 series provides a primer for anyone needing to design a land mobile radio system. The series, which is targeted to systems engineers, field engineers and radio technicians, covers the following topics:

  • Understanding LMR user needs;
  • The LMR user RFP process and technology assessment;
  • RF planning;
  • Connectivity and backhaul;
  • Dispatch, command and control;
  • Interoperability;
  • Radio site surveys, site selection, and field engineering;
  • Radio frequency interference;
  • Installation processes and standards;
  • Program and project management; and
  • Post-system project acceptance.

We welcome your feedback on these articles and also your suggestions on future topics.

Ira Wiesenfeld, P.E., is a consulting engineer who has been involved in the radio communications business since 1966. He is a senior member of the IEEE and has been a licensed amateur radio operator since 1963. He can be reached at iwiesenfel@aol.com.

Robert C. Shapiro, P.E, is the senior manager-systems engineering for Cassidian Communications, an EADS Company. He serves on the TIA TR8 committee as TR8.18 vice chair and is a senior member of the IEEE. He can be reached at bob.shapiro@eads.com.

Next: In the LMR 200 series, we apply a real-world perspective to LMR system design and engineering.

  • Part 1: Basic LMR and FCC definitions

  • Part 2: Understanding LMR user needs

  • Part 3: Conducting a user-needs survey

  • Part 4: Understanding the LRM procurement process

  • Part 5: System engineering begins with RF planning

  • Part 6: Receiver planning and noise interference

  • Part 7: How to connect LMR sites

  • Part 8: Understanding dispatch communications

  • Part 9: How to select a suitable LMR site

  • Part 10: How to deal with RF interference

  • Part 11: More causes of RF interference

  • Part 12: Installing the LMR system

  • Part 13: Choosing the LMR project, program managers

  • Part 14: Maintaining the LMR system

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