posted on Jun, 2 2003 @ 09:48 AM
If you mean the elk tracking, it used a com sat and sent a data stream timed to transmit when the sat went overhead. Also, the radio signal was
picked up locally too but the freq. were kept secret. Many GPS units do the same thing only in reverse when they recieve a radio signal from a beacon
close by and correct the error in the field, real time called DGPS (Differential Global Positioning Systems). I don't rely on them but do use them
when I get them. I post-process everything I shoot for good measure.
I think most of the elk tracking project is over now as we have a viable popluation. They have exploded using grasslands made by reclaimation of
strip mines for a food base as they died out of most of this state when people settled most of the flat areas that once held the grasslands. Of
course you won't hear that from any environmentlist but I find the more knowledge comes from conservationalist who understand habitats but thats