Teleflex TFXIDF Operation Manual page 10

USING THE IDF SERIES
SIGNAL INTERPRETATION
Trees: the signals here indicate an underwater tree or brush pile. The water is
18' deep and the tree extends to 7'. Limbs at various depths return individual
signals. Since fish relate to submerged trees and similar cover, these are excel-
lent areas to fish. To detect fish, anchor your boat and watch for signals that
come and go or move to different depths. Trees, of course, will appear station-
ary. Another way to identify fish is to reduce the sensitivity and grayscale to
minimize the number of segments. Dark segments may be fish.
SUPPRESSION
Weeds: Fish also relate to weeds so the ability to identify weeds is very important.
Solid weeds can appear as part of the bottom. If this is the case, use the sensitivity
control to grayscale out the weeds and mark targets holding in the cover.
8
SUPPRESSION
Structure such as trees give returns at
various depths.
17' bottom with low dense weeds changing
to sparse weeds at 14', a possible fish at 13'
and clear water from 11' up.