Marshall Amplification Field Marshall 100 Owner's Manual page 17

Ow ner's Manual
To avoid this, set your receiver on Near when you tune up –
this removes all but the real, genuine signal you want to tune
to. And stand a short distance away when you tune up.
What is the single most important thing to do if I ab-
solutely don't want to lose m y anim al?
Put a backup transmitter on the animal. The second transmitter
can be a smaller one, or perhaps one with longer battery life (a
good combination would be one extremely powerful transmitter
that you can use the first few days, and another that lasts a
long time, in case you don't find it right away.) Just remember
this: if your animal has a working transmitter, you can almost
always find it. It may take hiring a plane to fly over the area, but
eventually you can find it if you're patient and there is a signal.
I'm not exactly certain what direction the transm itter
is. Am I doing something wrong?
Getting the sharpest bearing to your transmitter saves a lot of
searching (that's why Marshall receivers use a full size, three
element yagi antenna). A three or five element yagi is more
precise, and a two element antenna is almost worthless. But
the following, easy technique can help you get a more accurate
bearing.
Instead of trying to find the strongest signal, try to find two
points on either side of it. Scan to both sides of the maximum
signal and notice the points on the horizon where the signal
drops exactly 1 unit on the S-Meter. Your best bet is that the
transmitter is halfway between those two points.
By the way, the wrong setting of the Range Switch could cause
this problem, too. See the following question.
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