Zeework Marine Ltd
Zeework Marine LtD
Welcome to Zeework Marine Ltd - The premier supplier of hydrogeomatics equipment and software to the Marine, Ports, Wet Construction and Surveying industries within the United Kingdom and the Republic of Ireland.
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Tide Gauges

Ohmex - TideM8

Telemetry

Ohmex - Radio Telemetry

Pacific Crest - EDL2 UHF Radio modems

Environmental Systems

Ohmex - PB100 Weather Sensor

Software

Trimble - HYDROpro Software

Trimble - SCS900 Software

Ohmex - Portable Sonar Software

Ohmex - EDAS Software

 

New Product Launch From Trimble

 

 

Ohmex Intrumentation - LR Radio Telemetry Modems

The 'LR' modems are a new range of digital radio telemetry systems to complement the Ohmex Tide Gauge and Weather station products, housed in a robust IP67 aluminium cases the modems are suitable for use in licence free Marine applications worldwide. The LR radios use a spread spectrum technology to avoid interference and provide clear data communications out to 25 KM between modems at baud rates up to 115.2 Kbps.

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Main Features
  • Inherent imunity to radio interference
  • Low power consumption with standby modes
  • Error free data transmission at upto 115 Kbaud
  • IP67 weatherproof enclosures and connectors
  • Wide range of antennas and connecting cables
  • Licence free use worldwide

The LR Spread Spectrum Radio is a 1 Watt Spread Spectrum Radio that operates in the 2.4-2.83GHz ISM frequency range. The technology spreads the normally narrowband information signal over a relatively wide band of frequencies. This allows the communications to be more immune to noise and interference from RF sources such as pagers and cellular phones. The radio reduces susceptibility to RF interference from other spread spectrum devices by providing user-selectable frequency hopping patterns. The modem radio provides general purpose wireless data communications, and supports point-to-point and point-to-multipoint datalogger communications. It can serve as a field modem/radio while connected to the datalogger, a stand-alone repeater, or as a base station modem/radio when connected to a computer.

LR Specification
  • Frequency - 2.4-2.83GHz
  • Technology - Spread Spectrum
  • Mode - Channel Hopping
  • Channels - 108
  • Range - Up to 25Km
  • Power Supply - 12v DC
  • Current Rx - 20ma
  • Current Tx - 250ma

Download Datasheet - modem.pdf (893KB)
 

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