RETIRED ›
This product is no longer available and has been replaced by: RF323. Some accessories, replacement parts, or services may still be available.
RF312 UHF Radio Transceiver

Overview

The RF312 is a rugged, narrowband UHF radio transceiver for customers with an FCC-assigned frequency in the range of 440 to 480 MHz. It is well-suited for Campbell Scientific RF networks. An FCC license is required.

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Benefits and Features

  • Rugged, low-cost narrow-band transceiver
  • Meets NTIA narrowband and FCC refarming requirements for transmission
  • Supports up to 16 channels
  • Transmits up to 25 miles line of sight
  • Compatible with most of our current and retired dataloggers
  • Supports up to 254 dataloggers on a single frequency
  • Each station can act as a repeater to extend the transmission distance attainable by the network

The RF310, RF312, and RF313 are narrowband UHF/VHF radio transceivers that provide a long-distance telemetry option for communicating with remote measurement stations. The three transceivers vary only by the frequency ranges they support:

  • RF310: 148 to 174 MHz
  • RF312: 440 to 480 MHz
  • RF313: 400 to 440 MHz

 


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Detailed Description

The RF312 is programmed by Campbell Scientific to the frequency that was assigned by the Federal Communications Commission (FCC). This frequency must be specified at time of order so that it can be programmed into your radios.

A user-supplied antenna that matches the FCC-assigned radio frequency is required for each radio. Typically, the COAXNM-L coaxial cable is used to connect the antenna with the radio. One end of the COAXNM-L includes a male BNC connector that mates with the radio's BNC connector. The other end of the COAXNM-L includes a Type N Male connector that mates with the antenna's connector; the majority of VHF/UHF antennas terminate in a Type N Female connector.

Besides the radio, each field station and repeater station must also have an RF500M Radio Modem or RF310M Radio Modem; base stations need an RF500M modem, RF500B Base Station, or RF310B Base Station. The RF System brochure provides a complete list of equipment used in our field stations, repeater stations, and base stations.

Specifications

Frequency Error ±3.0 ppm
Frequency Deviation Peak ±5.0 (12.5 kHz channel spacing)
Adjacent Channel Power 60 dB @ nominal conditions (12.5 kHz channel spacing)
Operating Temperature -30° to +60°C
Dimensions
  • 11.7 x 6.2 x 3.0 cm (4.6 x 2.4 x 1.2 in.) without mounts and connectors
  • 13.5 x 7.6 x 3.6 cm (5.3 x 3.0 x 1.4 in.) with mounts and connectors
Weight 218 g (7.7 oz)

RF Power Output (nominal)

High 5 W
Low 1 W

Current Drain

Standby < 65 mA (muted)
Transmit
  • < 2000 mA (5 W RF power)
  • < 1000 mA (1 W RF power)
Receiver < 80 mA

Compatibility

Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.

Dataloggers

Product Compatible Note
21X (retired)
CR10 (retired)
CR1000
CR10X (retired)
CR200X (retired) The CR200X-series dataloggers are only compatible if the RF500M radio modem is used.
CR206X (retired) The CR200X-series dataloggers are only compatible if the RF500M radio modem is used.
CR211X (retired) The CR200X-series dataloggers are only compatible if the RF500M radio modem is used.
CR216X (retired) The CR200X-series dataloggers are only compatible if the RF500M radio modem is used.
CR23X (retired)
CR295X (retired) The CR200X-series dataloggers are only compatible if the RF500M radio modem is used.
CR3000
CR500 (retired)
CR5000 (retired)
CR510 (retired)
CR800
CR850
CR9000 (retired)
CR9000X

Communication Devices

Product Compatible Note
RF232 (retired)
RF232A (retired)
RF232T (retired)
RF310B (retired)
RF310M (retired)
RF315M (retired)
RF500B
RF500M
RF95 (retired)
RF95A (retired)
RF95T (retired)

Additional Compatibility Information

Radios</4>

The RF312 does not work with other radio models.

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