Marshall Amplification Field Marshall 100 Owner's Manual page 35

Ow ner's Manual
the exact location of the transmitter: at the intersection of the two
lines. You probably can't follow the line to the transmitter directly
anyway because of roads and obstacles or the need to stay on
high ground, so take advantage of that fact.
For triangulation to work, you have to remember the line of the
previous bearing. You can do that mentally by noting two land-
marks on that line as you take the bearing. Note a landmark
behind the transmitter and another behind you. When you take the
next bearing you'll know that the transmitter should be somewhere
on the line connecting the two landmarks. Proceed toward the
point of intersection, but again offset to a third point. You'll end up
rapidly closing in on the transmitter in a spiral.
If you lose the signal altogether:
Go to high ground. If that doesn't help try high ground on the other
side of where you expect the transmitter to be or that looks over
the horizon in the direction the animal was headed. If you have no
clue where the animal is, drive in widening concentric circles
around where you last saw it, as closely as roads will permit. If you
have an omni-directional antenna put it on and keep your receiver
on.
When you are on a hilltop, the best location for getting a weak sig-
nal is usually slightly in front of the peak, though you can get a
°
better 360 radius from the top.
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