Positive Ion Control Theory - Cannon Magnum 5 ST Owner's Manual

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Fishing With Your Downrigger
Release some line from your rod and reel so that the
lure is anywhere from 5 to 100 feet behind the boat. This
is called drop back. Attach the fi shing line fi rmly into the
line release. Place the fi shing rod in the rod holder and
reel up the slack so that your rod has a slight bend in it.
When a fi sh strikes the lure, the line will separate from
the release. Then you will be free to fi ght the fi sh and
bring it in on your rod and reel.
WARNING—DO NOT TOUCH THE CABLE REEL
WHILE THE DOWNRIGGER IS IN USE!
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The Positive Ion Control System
Your boat has an electrical charge around the hull in
water. If a boat is properly grounded and has a proper
zinc anode, that charge should be slightly positive when
measured from ground to the downrigger cable. Positive
Ion Control (PIC) is the use of electricity to control that
charge and its fl uctuation so that it is always maintained
at a specifi ed set voltage.
The practice of setting up and maintaining a slight
positive charge on fi shing gear has been used by com-
mercial fi shermen for many years. This practice has
enabled some fi sherman to increase yield when used
along with other good fi shing and boating practices.
Cannon's electric downriggers offer fi shermen a big
advantage in being able to stabilize and control the posi-
tive charge around their boat. Because of the composite
construction of the frame, Cannon downriggers are
insulated from your boat's hull charge.
When the stainless steel downrigger cable is low-
ered into the water, the natural ionization between the
cable and the boat creates a positive charge of 0.7 to
0.9 volts in saltwater and 0.3 to 0.6 volts in fresh water.
This natural voltage is dependent upon salinity and min-
eral content of the water. Your actual voltage may vary.
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