This product is no longer available and has been replaced by: RF500M.
RF95A RF Modem
Services Available
Repair No
Calibration No
Free Support No


Used with our RF300-series radios, the RF95A provides an RF communication interface between the data logger and an RF300-series radio.

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Detailed Description

Note: The RF95A has been replaced by the RF500M modem. The RF95A remains available for customers with application-specific custom PROMS.

The RF95A is used with our RF300-series radios. It provides an RF communication interface between the data logger and a RF300-series radio. Each RF95A contains dip switches that allow the user to address the modem with a number between 0 and 255.

The RF95A and the primary transceivers it supported, the RF300-series radios, were replaced on our standard price lists by the RF310-series radios and RF310M modem in June 2002.


Standard Operating Temperature Range -25° to +50°C
Extended Operating Temperature Range -55° to +85°C
  • 16.3 x 8.4 x 2.5 cm (6.4 x 3.3 x 1.0 in.) no mounts
  • 17.3 x 11.9 x 2.5 cm (6.8 x 4.7 x 1.0 in.) with connectors and mounts
Weight 227 g (8 oz)


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

Data Loggers

Product Compatible Note
21X (retired)
CR10 (retired)
CR10X (retired)
CR23X (retired)
CR500 (retired)
CR5000 (retired)
CR510 (retired)
CR9000 (retired)

Communication Devices

Product Compatible Note
HT90 UHF (retired)
HT90 VHF (retired)
P50 UHF (retired)
P50 VHF (retired)
RF100 (retired)
RF200 (retired)
RF232A (retired)
RF300 (retired)
RF301 (retired)
RF302 (retired)
RF303 (retired)
RF304 (retired)
RF500B (retired)

Additional Compatibility Information

Radios, Radio Modems, and Radio Base Stations

The RF95A had earlier replaced the RF95 in all applications [the RF95A retained the RF95's item number]. The RF95A is backward compatible with existing Campbell Scientific RF systems but not compatible with RF310-series radios.

If RF95A modems are used in a network containing RF500M modems or RF500B base stations then the RF95A modems must use the -TD PROM; the data loggers must also be Table Data (-TD) or PakBus (-PB) versions.

Power Source

The RF95A requires a 5 V power supply from the data logger's CS I/O port or from a PS100/A100 (non-data-logger repeater site).

Frequently Asked Questions

Number of FAQs related to RF95A: 3

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  1. Usually, yes. Contact Campbell Scientific for a return material authorization number (RMA) and instructions for returning the unit for repair. Additional information is available on the Repair and Calibration page.

  2. No. The CR1000KD is designed specifically for use on the CS I/O port of the CR800, CR1000, and CR6 dataloggers. 

  3. If the RF modem has a CS I/O connector, then it should be compatible with the CR10X without the use of an SC932A. Ensure that the RF modem’s firmware is compatible with the CR10X firmware.

    Note: RF modems that are not sold by Campbell Scientific will only interface with a CR10X via an SC932A or an SC105. 

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