This product is no longer available and has been replaced by: RF450,RF451. Some accessories, replacement parts, or services may still be available.
FGR-115RC Freewave 900 MHz Spread Spectrum Radio


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
Dimensions 16.5 x 7.4 x 5.7 cm (6.5 x 2.9 x 2.2 in.)
Weight 441 g (15.5 oz)

Average Current Drain

Sleep 6 mA
Idle 21 mA
Receiving 86 mA
Transmitting 500 mA



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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