The TX312 is a High Data Rate GOES Transmitter. The transmitter complies with the HDR specifications, and supports transmission rates of 100, 300, and 1200 bps. Diagnostics and status information can be sampled by the datalogger, and transmitted as part of the data stream. Automatic GPS correction of the clock and oscillator drift ensure continued data transmission.

The RF312 is a Midland UHF transceiver that supports the 440 to 470 MHz frequency range. This rugged transceiver can support up to 254 dataloggers on a single frequency. Each station can transmit up to 25 miles line-of-sight, and each station can act as a repeater to extend the transmission distance attainable by the network.
The RF312 is programmed by Campbell Scientific to the frequency assigned to you by your Federal Communications Commission (FCC) license. This frequency must be specified at time of order so that it can be programmed into your radios. An RF500M or RF310M modem is required for each radio, and an RF500M or RF310B is required at the base station. The base station also requires a programmed radio.

The RF313 is a Midland UHF transceiver that supports the 400 to 430 MHz frequency range. This rugged transceiver can support up to 254 dataloggers on a single frequency. Each station can transmit up to 25 miles line-of-sight, and each station can act as a repeater to extend the transmission distance attainable by the network.
The RF313 is programmed by Campbell Scientific to the frequency assigned to you by your Federal Communications Commission (FCC) license. This frequency must be specified at time of order so that it can be programmed into your radios. An RF500M or RF310M modem is required for each radio, and an RF500M or RF310B at the base station. The base station also requires a programmed radio.

The RF310 is a Midland VHF transceiver that supports the 148 to 174 MHz frequency range. This rugged transceiver can support up to 254 dataloggers on a single frequency. Each station can transmit up to 25 miles line-of-sight, and each station can act as a repeater to extend the transmission distance attainable by the network.
The RF310 is programmed by Campbell Scientific to the frequency assigned to you by your Federal Communications Commission (FCC) license. This frequency must be specified at time of order so that it can be programmed into your radios. An RF500M or RF310M modem is required for each radio, and an RF500M or RF310B is required at the base station. The base station also requires a programmed radio.

The AVW206 has the same features and capabilities as the AVW200, with the addition of an internal spread-spectrum radio for wireless communication. The radio operates in the 910- to 918-MHz frequency range, for use in America and Canada.

The new AVW200 family of vibrating-wire interface modules applies a new method for measuring the sensors frequency. The traditional method uses a time-domain approach. The natural or resonant frequency at which the wire is oscillating is determined by exciting the wire with an AC excitation, stopping the excitation, and then measuring time between response pulses.

The AVW211 has the same features and capabilities as the AVW200, with the addition of an internal spread-spectrum radio for wireless communication. The radio operates in the 920- to 928-MHz frequency range, for use in Australia and Israel.

The new AVW200 family of vibrating-wire interface modules applies a new method for measuring the sensors frequency. The traditional method uses a time-domain approach. The natural or resonant frequency at which the wire is oscillating is determined by exciting the wire with an AC excitation, stopping the excitation, and then measuring time between response pulses.

The AVW216 has the same features and capabilities as the AVW200, with the addition of an internal spread-spectrum radio for wireless communication. The radio operates at the 2.4GHz frequency, for use world wide.

The new AVW200 family of vibrating-wire interface modules applies a new method for measuring the sensors frequency. The traditional method uses a time-domain approach. The natural or resonant frequency at which the wire is oscillating is determined by exciting the wire with an AC excitation, stopping the excitation, and then measuring time between response pulses.