Vexilar FL-8 - Manual (Page 18)

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as soon as possible after each use or, if it's cold, as soon as it reaches
room temperature. Do not overcharge or under charge the battery.
Use a battery charger that has an automatic shut-off feature. A battery
should be stored, fully charged, in a cool place. Charge it once a
month or so when in storage to make sure it's full.
How Far Down The Ice Hole Does The Ice-Ducer- Have
To Be?
You need water contact only to get a depth reading. The bottom
or the face of the transducer, only, has to make contact with the water
in order to get a good transfer of sound waves into the water
There are times (usually deep ice - 36" or more) when the trans-
ducer needs to be placed at the bottom of the ice. The zero indication
of the flasher will be unusually wide, 8 to 10 feet wide. This can be
caused by the transmitted signal ringing back and forth through the
depth of the hole. By extending the transducer to the bottom of the
hole this ringing can be eliminated.
Will The FL-8 Read Through The Ice?
YES! It will easily read through ice, provided the ice is CLEAR
ICE and not MILKY ICE. Remember, the transducer must have
GOOD CONTACT with the surface of the clear ice. A bottom indica-
tion should appear on the sounder's dial at an appropriate depth. The
ice surface must be wet; water works well.
Why Do I Get Interference?
Electrical interference can be caused by other electrical equipment
that put unwanted signals on the power line. It usually can be
reduced or eliminated by simple fixes such as resistor spark plugs and
wires on the engine or better grounding on the electrical system.
Sometimes, however, there can be equipment problems that need