This product is no longer available and has been replaced by: RF450,RF451. Some accessories, replacement parts, or services may still be available.


The FGR-115RC operated in the 902-928 MHz frequency range. Transmission range was up to 60 miles (please note that line-of-sight obstructions, RF interference, and antenna type affected transmission distance).

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Detailed Description

The FGR-115RC supported point-to-point and point-to-multipoint networks. It could serve as a field radio/modem connected to a datalogger, as a stand-alone repeater not connected to a datalogger, or as a base station radio/modem connected to a computer.

Freewave's FGR-115RC 1-Watt Spread Spectrum Radio was retired in July 2007.


  • Operating Frequency: 902 to 928 MHz
  • Type: Frequency Hopping Spread Spectrum (FHSS) Transceiver
  • Modulation: GFSK, 115.2 kbps or 153.6 kbps
  • Hopping Bands: 7, user selectable
  • Hopping Channels: 50 to 112, user selectable
  • Frequency Hopping Patterns:
    15 per band, 105 total, user selectable
  • Occupied Bandwidth: 230 kHz
  • Transmitter Power Output:
    100 mW to 1 W (+30 dBm)
  • Antenna Connector: Type N Female
  • Receiver Sensitivity:
    -108 dBm for 10-6 BER
    -110 dBm for 10-4 BER
  • Operating Temperature Range: -40° to +75°C
  • Power: 6 to 30 Vdc
  • I/O Data Rate: 38,400 to 115,200 bps
  • RS-232 Connector: 9-pin “D” DCE
  • Average Current Drain: 6 mA sleep, 21 mA idle, 86 mA while receiving, 500 mA while transmitting
  • Weight: 441 g (15.5 oz)
  • Dimensions:
    16.5 x 7.4 x 5.7 cm
    (6.5" x 2.9" x 2.2")



The FGR-115RC can be used in networks containing RF450 radios. Campbell Scientific does not recommend using it with our RF401-series or RF430-series radios.

Datalogger Considerations

Compatible Contemporary Dataloggers

CR200(X) Series CR800/CR850 CR1000 CR3000 CR9000X
* **

Compatible Retired Dataloggers

CR500 CR510 CR10 CR10X 21X CR23X CR9000 CR5000 CR7X

*The internal radio of the CR200(X)-series loggers should not be used with the FGR-115RC.

**Although the CR9000X and CR9000 are compatible, the FGR-115RC radio does not support their fastest communication rates, and is therefore not practical for most of their applications.


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