A BIOTELEMETRY SYSTEM FOR MONITORING HEART-RATES IN UNRESTRAINED UNGULATES

  • 1 January 1980
    • journal article
    • research article
    • Vol. 7  (3-4) , 188-198
Abstract
An ECG telemetry system was designed for use on free-living ungulates. An FM transmitter with a battery life of 2 .+-. 0.5 mo. and a range of 2-6 km is mounted on the back of the animal by an adjustable harness. The ECG signal is detected by subdermal electrodes overlying the sternum and transmitted to an FM receiver equipped with a frequency down-converter. The output of the receiver is the modulated audio carrier which is recorded on magnetic tape. The ECG waveform is recovered from the tape-recorded signal using an FM demodulator connected to a strip chart recorder.