Abstract
1 From 2008, telemetric transmitters used in tracking have to follow the standard specification code under the Radio Act.
2 Performances of 2 types of legalized transmitters (LT-01 for medium-sized animals and LT-02-2 for birds: Circuit Design Inc) were tested and compared with conventional type (M2940: ATS)
3 Performance of legalized transmitters were not much different from the conventional beacon-type transmitter, however, direction detection was somewhat difficult.
4 The maximum detection distance of LT-02-2 was about half of LT-01. This was not a serious problem in actual tracking.
