Wednesday, January 18, 2006

Radio collars for the location of lost hounds




Today we tested a series of radio collars and two receivers. One receiver was small and professionally done. It can support 15 different collars with a larger and cruder receiver supporting 20 different frequencies. It was pouring rain today so we only tested them indoors but they seemed to work well although at such close range on had to turn down the gain so that the receivers would not be swamped with signal. If the gain is too high the receivers loose their directionality as they get signals from all directions. With lower gain the receivers only respond when pointed in the direction of the transmitting collar. In the field the distance should be large enough so that gain will not be much of an issue. This weekend if the weather permits we will do a field trial.

1 comment:

Anonymous said...

5 X will likely not do it, in cold damp weather becasue 5 X doesn't account for water vapor depressing odor release, but there are web sites offering all varieties of odors that probably would cost less then radio collars. It would appear that a 5 X increase didn't appease angry dog owning fox hunters who want a scientific solution. A fair field test would pit 5 X versus radio.