As some of you may know I have been working on a technical project to support a program of deploying automated receivers across the country to pick up coded signals from bird tags. I felt they could use some technical guidance from a retired electrical engineer and Ham radio hobbyist (W3ASA) since most of the folks involved are biologists and ornithologists. I have been working with Willistown Conservation Trust who are spearheading this effort in Pennsylvania. They recently received a $500K grant from US Fish and Wildlife which will be used to deploy more automated receivers throughout the mid Atlantic region. My role in this will be to advise on appropriate antennas that will be mounted on towers which will provide good directional information, be cost effective, and relatively easy to install in remote locations.
As part of GMI’s science mission we are supporting a test facility that will enable field testing of various antenna combinations and bird tags. The tags currently in use operate at 166 MHz. Cornell has developed a new tag which operates at 432 MHz in addition to allowing smaller antennas they have orders of magnitude more code combinations than the 166 MHz tags currently in use. We have antennas set up for these tags as well and are currently running tests on them.
Since Great Marsh has been designated as an Audubon Important Bird Area(IBA) it is appropriate that GMI support new technologies that will enable ornithologists and biologists to gather new information that was not possible without the support of this technology. See Motus.org for more information. This link shows receiver locations worldwide and if you zoom in far enough you will see the two Marshlands deployments
Jim Moore, October 4, 2018