Proper transmitting and receiving antenna selection is fundamentally important to the successful application of radiotelemetry in wildlife studies. Transmitting antennas for animal radio-tracking applications in the 30- to 500-megahertz (MHz) range are usually limited to whip-and-loop configurations. In contrast, several types of receiving antennas are routinely used with varying degrees of accuracy. These include the simple dipole, multi-element yagi, H-adcock, omnidirectional whip, and select combinations of the above to form stacked, parallel, collinear, and circularly polarized hybrid antennas. A few automatic-direction-finding receiving systems are in use, and these will be reviewed. Basic antenna theory is discussed, and equations for calculating basic dimensional specifications for the more general antennas mentioned above are introduced. Factors relevant to material selection, construction, mounting, antennas coupling, and impedance matching are outlined.
Available at: http://works.bepress.com/charles_amlaner/45/