Narrowband UHF/VHF Radios Used in narrowband RF (radio-frequency) telemetry systems

Communications / Narrowband UHF/VHF Radios

About Narrowband UHF/VHF Radios

UHF and VHF radio products are used in narrowband RF (radio-frequency) telemetry systems. These systems consist of a radio modem and low-powered transceiver at the remote station(s), and a transceiver connected to a modem or base station at the computer site. Up to 254 stations can be interrogated over a single UHF or VHF frequency.

Retired Products
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Product Line

AL200X ALERT and ALERT2 Modem and Sensor Interface

The AL200X is an ALERT and ALERT2 modem and sensor interface designed for critical flood warning weather systems. It complies with the ALERT and ALERT2 standards maintained by the National Hydrologic...read more

AL200 ALERT2 Encoder, Modulator, and Sensor Interface

The AL200 is an ALERT2 encoder and modulator that supports ALERT2 and ALERT-concentration services. It meets the ALERT2 standards maintained by National Hydrologic Warning Council (NHWC) and ALERT Use...read more

RF320 VHF Radio Transceiver

The RF320 is a 136 to 174 MHz radio. Campbell Scientific’s RF320-series narrowband UHF/VHF radio transceivers provide a long-distance telemetry option for communicating with remote measurement s...read more

RF500M Radio Modem

The RF500M is a versatile radio modem for networks with UHF/VHF radios, typically serving as an interface between the data logger and radio. In addition to serving as a field modem connected to a data...read more

Other Considerations

AL205B ALERT2 Base

The AL205B is an ALERT2 receiver that is configured to support receiving ALERT2 messages typically used at base stations. The AL205B is configured with a radio receiver. Three serial ports allow for i...read more

AL205R ALERT2 Repeater

The AL205R is an ALERT2 repeater/transceiver that is configured to support repeating ALERT2 messages. With two radio I/O, independent receiving and transmitting radios are supported. Three serial port...read more