Assessment of Radio and Ultrasonic Telemetry Systems in a Polyhaline Reservoir
We tested the performance of low- (40 MHz) and high-frequency (150 MHz) radio and ultrasonic (75 kHz) telemetry transmitters in Robert S. Kerr Reservoir, Oklahoma, a polyhaline body of water. We measured the maximum detection distance of all 3 transmitters at various depths and conductivity levels in lacustrine habitats and the ultrasonic transmitter in riverine habitats. The ultrasonic transmitter had the greatest detection distance (600-1,200 m) in all lacustrine habitats and in clear, deep riverine habitats. Ultrasonic transmitter detection distance decreased by 94% at a shallow...
