A Local Radio is a 2-watt, narrowband UHF 450-470 MHz radio modem. A local radio system has a single local radio hub and one or more controllers in the field with the local radio communication option. The hub manages data flow between the central computer and surrounding controllers.

Features

  • Blanket your entire City or campus with wireless communication so your Calsense controllers can share a single central communication option
  • Provides reliable long-range communications

Accessories

Antennas

An antenna, purchased separately, is required to use the CS3-LR option for communication. Calsense offers three antennas, each designed to accommodate specific situations.

  • The Calsense Stubby Antenna, model LR-STUBBY, is a 3-dBi omnidirectional surface mount antenna designed for all environments and applications. This antenna is included when ordering this option as a kit, model CS3-LR-KIT.
  • The Calsense Stick Antenna, model LR-STICK-X, is a fiberglass omnidirectional antenna used to extend the range of a spread spectrum radio and is often recommended for use with spread spectrum hubs and repeaters. This antenna is available in 3-, 5-, and 7-dBi, represented by X in the part number.
  • The Calsense Yagi Antenna, model LR-YAGI-X, is an aluminum directional antenna typically used to extend the communications range of a specific controller location. This antenna is 7- and 10-dBi, represented by X in the part number.

LMR-400-DB or LMR-600-DB antenna cable is required when using a Stick or Yagi antenna.

  • Available in standard lengths ranging from 10’ to 50’: models LMR-400-DB-10ft, LMR-400-B-20ft, LMR-400-DB-30ft, LMR-400-DB-40ft and LMR-400-DB-50ft
  • Custom length cables are also available:
    • Model LMR-400-DB can be used for up to 100-feet. Special order only. Non-cancellable and non-returnable.
    • Model LMR-600-DB is available for cable lengths greater than 100-ft. Special order only. Non-cancellable and non-returnable.

Optional Equipment

Calsense also offers other equipment including a frequency filter and surge protection for spread spectrum radio antennas.

  • The Calsense Antenna Cable Surge Protector, model ANT-PROT, helps protect the RF filter, if installed, and the radio equipment from lightning strikes. Note: An ANT-PROT is required when using an LR-STICK antenna and recommended when using an LR-YAGI antenna.
  • The Calsense Local Radio Frequency Filter, model LR-FILTER, is a cavity resonator used to help prevent interference from unwanted frequencies by filtering them out. Note: An LR-FILTER is recommended when using an LR-STICK or LR-YAGI antenna.

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