01088naa a2200217 a 450000100080000000500110000800800410001910000200006024500580008026000090013852005200014765000130066765300200068065300210070065300210072165300150074265300150075770000180077270000160079077300640080617956972009-04-17       1968    bl ---       0--  u    #d1 aKNOWLTON, F. F.  aA telemetric monitor for determining animal activity.  c1968  aDesign details are presented for a radio transmitter, keyed on and off by an inexpensive motion transducer. A piezoelectric element from a phonograph pickup cartridge and two steel balls create voltages which trigger the transmit circuits whenever the unit is moved. In use, the transmitter quantifies animal activity and permits nonvisual monitoring of daily, seasonal, and annual activity rhythms. It also aids in determining the effects of meteorologic or physiologic conditions upon patterns of animal activity.  awildlife  aAnimal activity  aAnimal silvestre  aAtividade animal  aTelemetria  aTelemetric1 aMARTIN, P. E.1 aHAUG, J. C.  tJournal of Wildlife Managementgv.32, n.4, p.943-948, 1968.