Auxiliary VHF transmitter to aid recovery of solar Argos/GPS PTTs
2014
Hansen, Christopher P (Christopher Paul)
While conducting greater sage-grouse (Centrocercus urophasianus) research, we found that solar-powered global positioning systems platform transmitter terminals (GPS PTTs) can be lost if the solar panel does not receive adequate sunlight. Thus, we developed 5-g (mortality sensor included; Prototype A) and 9.8-g (no mortality sensor; Prototype B) auxiliary very high frequency transmitters that attach to the underside of GPS PTTs and work independently of the solar panel to aid in recovery of the units. Prototype A did not function properly because of an over-sensitive mortality sensor. Prototype B performed better; each was active upon recovery. Auxiliary transmitters were useful, but we encourage testing before deployment.
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