Hawkeye Mfg FF3355P User Manual

Installing the Batteries
1. Slide the Battery Door towards the bottom of the unit and remove it from the main hous­ing.
2. Install 4 “AAA” batteries. Be certain to align the batteries as per the diagram within the battery compartment.
3. Close the battery door com­pletely by reversing step one.
Refer to Figures 2 and 3 to Set the Following Features:
The POWER Button
• To turn the Power On, press the POWER Key.
• To turn the Power Off, Press and Hold the POWER Key for 3 seconds.
• During normal operation the screen can be refreshed by pressing the POWER Key. Use this feature if inconsistent readings are evident.
• To enter the simulation mode hold the POWER key down for 5 seconds while the power is off. Release the POWER key once the display turns on. The unit is now in Simulation mode and must be turned off to enter normal operation.
The SETUP
and ENTER
Buttons
(Feature Setup)
• Press and Hold the SETUP
Key for 3 seconds.
• The Sensitivity Indicator ( ) will blink.
• Cycle through the features by pressing the SETUP key. (the
indicator will blink for the current feature to be set)
• To activate or deactivate a feature press the ENTER key.
• The screen will automatically return to normal operation after 5
seconds if no keys are pressed.
Portable Fish Finder FF3355P Fishing Guide
Thank you for purchasing the HawkEye®Portable Fish Finder, and wel­come to the Innovations of NorCross Marine Products, Inc.
Before You Fish
Figure 2:
Figure 1:
Adjusting the Sensitivity ( )
Fishing at Night ( )
• Turning the backlight feature ON will keep the screen illuminat­ed all the time.
This feature will greatly reduce the battery life
of the unit, so it should only be used during low light conditions.
• When the backlight feature is set to OFF, the backlight will illu­minate for 3 seconds whenever a key is pressed.
ENJOY YOUR
FREEDOM...
NOTE: The fish finder has an automatic power off fea­ture to prevent battery drain if you accidentally leave the unit on. When the depth display reads “---” con­tinuously for 5 minutes, the display will shut off auto­matically.
FISHING TIP
There are 4 user selectable sensitivity settings to choose from. So, which setting is the right setting? It greatly depends on the clarity and/or depth of the water. Very clear water allows for a moderate sensitivity setting. Conversely, dirty water requires a higher sensitivity setting to target detail but will increase the irritating false readings. Targeting deep water fish generally requires greater sensitivity, especially in stained or dirty water. Salt and brackish water also require a compar­atively higher sensitivity setting. While this analysis may seem confusing, the concept is simple. As the unit's sensitivity is elevated, a broader view and smaller details show on the screen. But, with a broader and stronger view comes more clutter and debris.
The clearer the water
, the less sensitivity
needed to get accurate details and vice-versa.
FISHING TIP
Get to know the fishing regulations and habits of the fish that you are targeting by visiting your local
tackle center
, bait shop, library, or website. A little research can be a valuable lesson that will allow you to utilize the features of your fish finder, to make fish­ing more enjoyable for you, and your fishing buddies.
NOTE: Alkaline batteries lose a considerable amount of their power below 20oF (-7oC). If you’re using your fish finder in Sub-Zero temperatures, you may have to keep the unit warm (above 20
o
F (-7oC) for optimal
performance.
POWER
ENTER
SETUP
A
B
C
D
G
J
A Depth Readout B Sensitivity Setting C Backlight On/Off D Fish Alarm On/Off E Battery Save On/Off F Battery Strength Indicator G Fish Depth Indicator H Bottom Contour Detector I W
eedID
TM
W
eed Detector
J Fish Location Indicator
Figure 3:
VirtuViewTMLCD ICON DISPLAY
E
F
H
I
SONAR SENSOR PLUG
NOTE: When a feature is activated, the indicator will appear. When a feature is deactivated, the indicator will not appear or it will have an “X” over it.
Removing the Sonar Sensor Float
If you find that you do not have a need for the sonar sensor float, it can be removed as follows:
1. Remove the rubber stopper from the cable by sliding the safe­ty strap toward the headphone-style plug and gently working it over plug.
2. Slide the cable through the center of the float toward the plug and gentle work the plug through the center of the float in a rocking motion.
FISHING TIP
By attaching the SideScanTMAdapter to an ordinary broom stick or paint roller handle purchased from a local hardware store, you can scan for fish suspended in the water column with­in 99.9 Ft (30.4 M) of your location. Attach the sensor to a handle, lower the sensor into the water as per figure 10, and slowly move the sensor in a manner that will allow the signal to search the desired location (a sweeping motion similar to using a flashlight is most effective). Keep in mind the sonar signal is emitted from the base of the sensor
. Scan down, sideways, or any combination of the two. Remember, to get depth and bottom contour and composition readings you will have to aim the signal at a solid object within 99 Ft (30.4 M), however FISH readings will be accurate, even if the depth readings is “---”.
Using The Sonar Sensor From A Boat
There are four methods that the fish finder can be used from a boat.
1. Toss the sensor and float into the water as per the previous instructions.
2. “Shoot Thru” the hull as per the instructions in the next section.
3. Attach the SideScan
TM
adapter to handle and scan for fish as
per the fishing tip below.
4. Attach the SideScanTMAdapter to the boat hull using the mount­ing tabs.
NOTICE: Using method 4 will make the fish finder inop­erable at boat speeds over 5 mph (8 kph).
Using The SideScanTMAdapter
Your fish finder includes a combination SideScanTMadapter, mounting bracket for the Sonar Sensor (Figure 9).
(A) The
Adapter is threaded to easily attach it to a standard broom stick or paint roller handle purchased from a local hardware store.
(B) The
Adapter includes mounting taps so that you can attach it to any flat surface or boat hull.
(C) The Adapter is removable and adjustable up to 180 Degrees.
FISHING TIP
Here are Some Ideas for Maximizing the Usefulness of the SideScan
TM
Adapter: • Attach it to a dock piling and scan
sideways for fish swimming by
. •
Attach it to a boat, kayak, or canoe hull and slow troll for fish, all the while keeping a look out for fish behind or in front of you. • Attach it to a broom stick handle and search for the best fishing location.• Attach it to a broom stick and seek out the fish hiding away from your fishing hole while ice fishing.
(a)
(b)
(c)
Figure 9:
Figure 10:
Adjusting the Sonar Sensor Float
The Sonar Sensor float must be adjusted so that it is a minimum of 6 inches away from the sen­sor (it can be further depending upon water conditions see Note below) (Figure 5).
1. Pull out the rubber stopper.
2.
Adjust float so that it is 6 to 10 inches from the sensor, or at your desired depth.
3. Replace the rubber stopper by pressing it firmly into the float.
Using the Sonar Sensor with the Float
1. Toss the sonar sensor and float assembly into the water at your desired fishing location.
To toss, place the sonar sensor and float in your hand, and pitch underhand.
Do not throw the sensor by the cable as this will cause unrepairable damage.
Before tossing, be certain that the cable is free from tangles and is not wrapped around anything.
2. Use a pole to guide the sonar sensor to a desirable position (Figure 6) or add floats on the cable to allow the cable to float on top of the water (Figure 7).
3. To retrieve the sonar sen­sor and float simply pull in the cable being certain to neatly wind up the excess cable.
Figure 5:
Figure 7:
Figure 8:
WARNING:
Do not allow the cable to sink to the bottom
as it may become entangled in debris (Figure 8).
Float
Sonar Sensor
NOTE: In calm water the sonar sensor can be set at
which will provide the maximum amount of sonar cov­erage. In rougher water, the sonar sensor may need to be lowered into the water further to provide stabi­lized readings.
NOTE: To prevent accidental loss of the stopper always press the rubber stopper firmly into the float before tossing the sonar sensor into the water.
Figure 6:
Audible Notification of the Presence of Fish ( )
• An audible alarm sounds when a
group of fish are detected. It will
NOT sound if just one fish is detected.
Changing the Units of Measure for Depth Readings
• Press and Hold SETUP and ENTER (at the same time) for more than 5 seconds. The display will flash the current units setting next to the depth readout.
• Press either key to toggle the unit of measure (Ft = Feet or M = Meters). The selected unit of measure will blink.
• The screen will automatically return to normal operation after 5 seconds if no keys are pressed.
Plugging In The Sonar Sensor
• Insert the Senor Plug into the socket on the top of the unit.
• To prevent the plug from inadvertent­ly coming out you can feed the plug through the plug holder before inserting into the socket (Figure 4).
FISHING TIP
Leave the alarm on if you are using a crank bait so that you do not have to steadily watch for fish on the screen. If you hear the alarm, gently toss your bait at least 20 feet beyond the sonar sensor, allow the bait to drop to the depth of the fish alarm, and retrieve as recommended for the targeted species.
Figure 4:
Depth Readout
The depth readout on the upper left corner (Figure 14) will appear after the power is turned ON and the sonar sensor is placed in water between 1.5 feet and 99.9 feet (.5 to 30.4 Meters). If the depth exceeds these parameters, the depth meter will indicate “--­”. This reading may also occur in water that is extremely dirty, or where there are heavy silt or mud bottoms. Sonar is a sound sig­nal that travels through water. Sonar will not travel through air. Keep this in mind when using the fish finder, as the smallest air bub­ble between the sonar sensor and the water, will cause the unit to not operate correctly.
Fish Indicators
If the fish finder determines that sonar has detected a fish, the dis­play will show a fish shaped icon (Figure 14). The first column of fish indicators on the right of the display shows the most current information. This column is then moved to the left as a new read­ing is displayed. That is, fish indicators “swim” away from the right to the left at a constant speed.
This motion in no way reflects
actual movement of the fish.
Fish Depth Indicator
Use the Fish Depth Indicator to measure the fish’s depth from the Sonar Sensor (Figure 15). This can be done by dividing the depth reading by 10. This number represents the value of each box.
(example, the depth is 70.0 feet, the fish symbol appears in the 5
th
box from the top. This means the fish is 35 feet from the the
surface)
Fish
Depth
Indicator
Depth Readout
Fish
Indicators
Figure 14:
Figure 16:
The WeedID
TM
feature incorporated into the fish finder depicts the amount of weed at the bottom of the water body.
The display indicates the presence of short weeds by turning on the smallest WeedID
TM
indicator (Figure
16).
Moderately tall weeds are depicted by turning on the second WeedID
TM
indicators (Figure 17).
Tall weeds are depicted by turning on the third WeedID
TM
indicator (Figure
18).
Targeting Prey In The Weeds
Figure 15:
Figure 17:
Figure 18:
FISHING TIP
If the prey that you are targeting prefers a weed habitat you should try to fish your bait as close to the top of the weeds as possible
(installing a weed guard on your hook will prevent accidental snag­ging of the weed).
NOTICE: In an area where tall and short weeds are present, all 3 icons will be lit.
4. To remove the Sonar sensor from the frozen ice, gently tap the sonar sensor at the base with your hand. If it will not come loose, spray a small amount of water on the ice surface around the base and repeat step 4 until the sonar sensor is easily removed.
Understanding How the Fish Finder Finds Fish
Greatly simplified, this fish finder is just a combination of a speaker, microphone and stopwatch; it transmits as sound pulse from the sonar sensor, and then measures the time it takes for the “echoes” to return to the sonar sensor (The fish finder "knows" that the speed of sound through water is about 4800 feet per second).
Fish, rocks, logs, weed, debris, the bottom, etc all “echo” the pulse at a different intensity. A built-in computer then organizes all of this infor­mation and shows it on a display screen in a manner that is easy for the user to understand.
W
ARNING:
Never use a blunt object to strike the sonar sensor as this may cause damage to the sensitive internal electronics.
FISHING TIP
Use the fishing tip in the “Using the Sonar Sensor from a Boat” section while ice fishing. This method will give you an accurate indication of where the best fishing location for suspended fish is within 99.9 ft (30.4 M).
Figure 13:
T
o achieve the best performance for ice fishing, it is highly rec­ommended that you cut a hole through the ice and place the sonar sensor directly in the water
. If you would like to check the area for depth or fish before cutting the hole, please follow steps 1 - 4 pre­cisely.
1. Clear away snow to expose the ice surface, making sure the
surface is smooth.
2. Place a small amount of liquid water on the ice and set the
sonar sensor on the water allowing the unit to freeze to the ice (Figure 12).
3. If there are any air pockets
between the sonar sensor and ice, or the water below the ice, the unit will not work properly and will require you to try another spot, or cut a hole in the ice to use. You can also use the instructions in sections (b) or (c) of the “To Shoot-Thru the Hull of a Boat” section. Be certain not to allow the water to freeze around the sensor if you use the “plastic bag” (c) method.
Figure 12:
Using the Fish Finder for Ice Fishing
NOTE: Do to various environmental condi-
tions,this process may not work in all situations.
Figure 11:
(a)
(b)
(c)
Using the Fish Finder Thru a Boat Hull?
The fish finders advanced sonar capabilities allows it to “shoot thru” the bottom of a boat or canoe.
The hull must be made out of solid fiberglass, or a maximum of 1/8” aluminum, and be in direct contact with the water
, with no air pockets. The unit will
not work thru wood, plastic, or any composite material.
T
o “Shoot-Thru” the hull of a boat,
do one of the following (Figure 11)
a) place the sonar sensor in .5 inches of water against the hull
bottom.
b) coat the face of the sonar sensor with petroleum jelly and
press it against the hull bottom with a twisting motion.
c) place the sonar sensor in a plastic bag that is full of water
and place against the hull bottom.
If depth readings appear as “---” while using one of these meth­ods, place the sonar sensor directly in the water to verify that the fish finder is operating properly. If it operates properly while directly in the water, reposition the sensor in a new location in the hull, and repeat methods A, B, or C. These methods DO NOT work on all hulls and you may have to place the sensor directly in the water for proper operation.
Spray Water Here
Ice Surface
4. Is My Fish Finder Waterproof?
Although the display housing is made to be water resistant, it is not made to withstand submersion in water. Follow the Care of Your Fish Finder Section to prevent accidental dam­age.
5. I’m Trying to “Shoot-Thru” Ice or a Boat Hull, and the Depth Display Only Reads “---”?
Shooting-Thru the hull of a boat/canoe or ice can be difficult, as hidden air pockets will prevent you from obtaining a read­ing. Make certain that the hull or ice is solid from the surface to the water with no air bubbles and/or gaps. Shooting thru composite hulls (plastic) or cloudy ice is not possible as there are tiny air bubbles present in these situations.
ALWAYS use a small amount of water to attach the sonar sensor to an ice surface.
6. I’m Using the Unit for Ice Fishing, but the Depth Just Reads “---”?
The sonar components in the sonar sensor will not pulse below an ambient air temperature of -4º F (-20 ºC). When operating the unit in temperatures at or below this level, keep the sonar sensor warm until it can be placed directly into the water.
7. The Unit Keeps Shutting OFF Automatically?
The display has an automatic power off feature to prevent battery drain if you accidentally leave the unit on. If the depth display reads “---” continuously for 5 minutes, the display will shut off automatically.
3. I See Fish Under the Sonar sensor, but Nothing Appears on the Display
As with the depth reading, the fish finder will not detect any
objects that are closer than 1.5 feet from the sonar sensor. If you’re fishing in water that is less than 3 feet deep, it is rec­ommended to discontinue use of the fish finder.
Frequently Asked Questions?
1. What Type of Floats Can I use for the Sonar sensor Cable?
1 inch regular fishing bobber have proven effective. A bright color is also helpful at alerting any boaters of the cable in the water so it is not damaged by a passing boat.
2.
Why does the float need to be 6-10 inches from the Sonar
Sensor? Can it be more than that, or less?
The recommended distance of 6-10 inches allows the Sonar Sensor to remain stable below the surface, even in rougher waters. The float can be adjusted to set the sonar sensor deeper if desired, to get in below a layer of ice perhaps, but the the difference in depth must then be added to what the unit displays.
3. How Long W
ill the Batteries Last?
Total usage life of one set of batteries depends on the opera­tional settings. The Backlight Feature will significantly reduce the battery life and therefore should be limited to nighttime use only. The average overall life based on normal use is between 25 and 30 hours of operation.
1. Nothing Happens When I Turn the Power On.
Make sure that you have installed a good set of batteries and aligned them as per the diagram within the battery compart­ment. You may also need to test the batteries in another device to insure they are charged. If in doubt, replace the batteries with a set from a newly opened package.
2. The Depth Reading Is “---”
Make sure that you are operating the unit in depths between 1.5
and 99.9 Feet (.5 to 30.4 Meters). Be aware that the depth is measured from the sonar sensor, not the float.
Also make sure that the water is not overly choppy, causing the sonar sensor to move around significantly. The sonar sensor must remain relatively stable to achieve optimal readings. When necessary, lower the sonar sensor to hang further from the surface of the water, providing more stability in rougher water.
If you’re using the unit for Ice Fishing, please refer to the FAQ section for more help.
NOTE: Below freezing temperatures are extremely harsh on the electronic components within the fish finder. It is important that you keep the unit in temperatures above -4 degrees Fahrenheit (-20 degrees Celsius) during operation. This may require you to keep the display head in a jacket pocket or other warm place during and in-between uses.
Uncovering The Best Hiding Places
The VirtuViewTMdisplay on your Fish Finder depicts bottom structure with a series of rock indicators. If the species that you are tar­geting prefers to ambush prey as per the above Fishing Tip, pay close attention to the bottom structure indicators when searching for fish.
• No rock indicators identifies a structureless bottom. Figure 15 depicts a bottom that is most likely sandy or muddy with no debris or contour. Agood habitat for some fish, but not very desirable for ambush feeders.
Care of Your Fish Finder
1. Clean the sonar sensor and cable with fresh water and dry-off before storing. Do not submerge and/or spray the fish finder screen/hous­ing with water or use chemicals to clean. If necessary
, wipe with a
damp cloth.
2. Remove the batteries from the fish finder to prevent battery leakage and corrosion.
3. Store the fish finder in the storage bag in a cool, dry place. Never leave it in temperatures over 120 degrees Fahrenheit as the extreme temperatures can damage the electronic components.
4. Cold weather is extremely hard on the electrical components within the display housing. It is suggested that you keep the unit in temperatures above 0 degrees Fahrenheit (-17 degrees Celsius) during operation. The sonar sensor cable also becomes very stif
f under cold conditions. Excessive winding or unwinding under these conditions may cause unrepairable damage. DO NOT WIND OR UNWIND THE CABLE IN TEMPERATURES BELOW 32º F (0º C).
I’m Having a Problem, What Do I Do?
Do not attempt to repair the unit yourself. There are no user serv­iceable parts inside, and opening the unit will void the warranty. Before returning the fish finder to the place of purchase, please read the following section or visit our website at www.norcrossmarine.com for troubleshooting information.
If you still can’t figure out your problem, give us a call. We love to hear from our customers and appreciate the opportunity to help you catch more fish.
Figure 19:
Figure 20:
FISHING TIP
Experienced fisherman will tell you that many fish choose to hide along the bot­tom and ambush their prey as it swims by
. Logs, Tree Stumps, Rocks, Ledges, etc. all provide excellent ambush locations. Uncovering these hiding places will prove invaluable to your fishing trips.
Remember to keep an eye on the depth of your bait while fishing bottom structure as you do not want to snag it on the structure.
FISHING TIP
If your targeting fish that prefer weed or structure try this: If you’re fishing from a boat establish accurate readings by using the techniques in this manual. Next, slowly move the boat around the fishing area while paying close attention to the bottom structure and WeedID
TM
. Do not begin fishing until you discover the optimal spot for fishing (using your knowl­edge about the desired prey’s feeding habitat and the fish finder readings). This may take a considerable amount of time, but if you find a secret spot it will be well worth it. This can also be done from shore by walking along the bank and tossing and retrieving the sensor out into the water in 5 foot intervals. IMPORTANT: When you find that secret spot, keep it to yourself. There is nothing that ruins a secret spot quick­er than word of mouth.
• One Rock Indicator identifies limited structure (Figure 19). You would most likely find a small rock, a small pile of rocks, or uneven bottom contour
. This is not a bad place for hiding fish, but due to
the limited amount of structure, there may not be a lot.
Two Rock Indicators identifies a considerable amount of bottom
structure, but scattered (Figure 20). A considerable amount of time needs to be spent fishing this area as each piece of structure could be hiding a prize catch.
Three Rock Indicators indicates a large amount of bottom structure
in a confined area.
This bottom may consist of a large rock(s), stump(s), tree(s), or a ledge(s). Read the following tip to protect this spot (Figure 21).
Figure 21:
WARNING!!!!
This fish finder should not be used as a navigational aid to prevent grounding, boat damage, or personal injury. Always operate the boat at slow speeds in unfamiliar water, or if you suspect shallow water or submerged objects, as water depth may change too quickly to allow time for you to react.
11. I Tried Everything in this Manual, and I am Still Having
T
rouble. What Do I Do?
If fish finder does not function under any circumstance or “locks­up”, remove the batteries, let the unit sit for 60 seconds, and then re-install the batteries. If that doesn’t work, refer to the next 3 paragraphs.
A
majority of the fish finders that we receive from customers for service are not defective and the problems are easily solved by contacting customer support. If you have a problem with your unit or have technical questions, first visit our website at www.nor­crossmarine.com for valuable problem/solution troubleshooting. The best way for us to assist you is by sending us a detailed description of the problem via email to customerservice@nor­crossmarine.com.
If your questions cannot be answered in this manner, please con­tact our customer service department between 8:30 AM and 5:30 PM, Eastern Standard Time at 888-667-2767. We do not waste our customer’s time by keeping them on hold, so please be confi­dent that if you leave a message for a customer support repre­sentative, they will get back to you in a timely manner.
If after contacting our customer service department it is deter­mined that your fish finder is in need of service and or replace­ment, securely pack the unit and mail prepaid via insured post to: NorCross Marine Products, Inc.. A copy of the original sales receipt is required as the proof of purchase for warranty repairs. A copy of the Warranty registration card must also be on file with NorCross Marine Products, Inc., so be sure to submit the includ­ed registration card within 10 days of purchase. Please be sure to include your name, address, email address, and a daytime phone number within the package.
WARNING: Disassembly of the electronic components within this unit may result in exposure to lead in the form of solder, which is known to the state of California to cause cancer
, birth
defects, and other reproductive harm.
6450 Kingspointe Pkwy, Ste 6
Orlando, FL 32819
PH: (407) 370-3600
Fax: (407) 422-0501
Toll Free: 888-NorCross
Email: customerservice@norcrossmarine.com
© 2004 NorCross Marine Products, Inc.
Specifications Subject to Change Without Notice
Display Type VirtuViewTMLiquid Crystal Icon Backlighting
Green SoftGlow
TM
LED
Power Requirement
4 - “AAA”
Alkaline Batteries
Power Output
800 Watts, Peak to Peak
Units of Measure
Feet and Meters
Depth Range Max.
99.9 feet (30.4 Meters)
Depth Range Min.
1.5 feet (.5 Meter) Sonar sensor Frequency 200 kHz Sonar sensor Beam
Angle
45 degrees
Operational
T
emperature Range -4º F to 158º F (-20 to 70 ºC)
SPECIFICATIONS
NORCROSS 2
Y
EAR LIMITED WARRANTY
T
o be eligible for warranty coverage your fish finder must have a copy of the Warranty Registration Card on file with NorCross Marine Products, Inc., so be sure to submit the included registration card within 10 days of purchase.
You may also register on our website.
NorCross Marine Products, Inc. warrants, to the original purchaser
, this product to be free from defects in materials and workmanship for Two (2) Years from the date of purchase. If the unit fails to perform as described in the product’
s written specifications, due to a defect in materials or workmanship, we will repair it free of charge to the customer for parts or labor. The customer, however, is responsible for any costs associated with returning the unit to NorCross. This warranty is void if damage or malfunction is due to abuse, misuse, accident, failure to reasonably maintain, improper installation or use, or unauthorized alteration or repairs. NorCross retains the exclu­sive right to repair or replace the unit at its sole discretion, and holds this right as the exclusive remedy available to the customer against NorCross for any defect, mal-function, or non-conformity concerning the product, or for any loss or damage resulting from any other cause whatsoever. NorCross will respond to all warranty claims within a reasonable time after receipt of the unit from the original pur­chaser, with such response time not to exceed thirty days without written notification of delay to customer.
To obtain warranty service, securely pack the unit, and mail prepaid via insured post to: NorCross Marine Products, Inc., Warranty Department, 6450 Kingspointe Pkwy, Ste 6, Orlando, FL 32819. A copy of the original sales receipt is required as the proof of purchase for warranty repairs. A copy of the Warranty registration card must also be on file with NorCross Marine Products, Inc., so be sure to submit the included registration card within 10 days of purchase. Please be sure to include your name, address, email address, and a daytime phone number within the package.
8. The Depth Reading is Incorrect
Make sure the sonar sensor is perpendicular to the water when trying to obtain depth readings. Extremely heavy veg­etation may confuse the sonar signal, causing it to misinter­pret the depth. If you are certain that the readings are incor
-
rect under these conditions, discontinue use.
9. I’m Getting False Fish Indications
The most common cause of false fish indications is extreme­ly tall weed growth. If weeds grow taller than 50% of the total water depth in a particular area, the sonar will mistake it for fish. Trash & debris may also give false readings. Adjusting the sensitivity setting to the lowest level may reduce these false readings, but if they do not go away
, it is suggested that
you discontinue use of the fish finder under these conditions.
10. How Much Underwater Area Does the Fish Finder Cover (Cone Coverage) (Figure 22)
DEPTH
Ft (M)
100 (30.5)
90 (27.5)
80 (24.4)
70 (21.3)
60 (18.3)
50 (15.2)
40 (12.2)
30 (9.1)
20 (6.1)
10 (3.1)
COVERAGE
AREA Ft (M)
35 (10.5)
32 (9.7)
28 (8.6)
25 (7.5)
21 (6.5)
18 (5.4)
14 (4.3)
11 (3.2)
7 (2.2)
4 (1)
COVERAGE
AREA
Figure 22:
Loading...