Humminbird Fish Finder RF15 User Manual

NOTE: Each time the POWER-MENU key is pressed, the backlight momentarily illuminates for easy viewing at night.  
Adjust the LIGHT menu setting to keep the backlight on.  
SetUp Menu  
RF15 Operations Manual  
Handle the RSS by the antenna tower when it has  
been in water.  
531393-1-A  
Press the POWER-MENU key until SetUp appears. Select either Off or On.  
(Off, On, Default = Off)  
NOTE: If Simulator Mode is selected from the Start-Up Menu and a transducer is plugged in, some menu setting  
changes will be saved in memory even after the unit is powered down. Menu setting changes will not be saved from  
Simulator mode when a transducer is not connected.  
Thank You!  
Thank you for choosing Humminbird®, America's #1 name in fishfinders. Humminbird® has built  
its reputation by designing and manufacturing top-quality, thoroughly reliable marine equipment.  
Your Humminbird® is designed for trouble-free use in even the harshest marine environment. In  
the unlikely event that your Humminbird® does require repairs, we offer an exclusive Service  
Policy-free of charge during the first year after purchase, and available at a reasonable rate after the  
one-year period. For complete details, see the separate warranty card included with your unit. We  
encourage you to read this operations manual carefully in order to get full benefit from all the  
features and applications of your Humminbird® product.  
When you choose SetUp, additional menu choices will become available that are not a part of the  
Main Menu system. After selecting SetUp, press the POWER-MENU key to display the SetUp menu  
choices, one at a time. SetUp Menu choices include:  
NOTE: Turning on the SetUp menu choice from the Main Menu System allows you to access additional set-up menu  
choices. See SetUp Menu for more information.  
Use a heavy test line,  
standard knots, and  
tackle such as a swivel.  
• Contrast  
Light  
(Setting Not Saved in Memory)  
• Fish ID+  
The second leader hole is for using the RSS as a  
float. Connect a lighter weight hook line to this  
hole. Do not over-weight the hook line as this will  
submerge the RSS, causing signal loss.  
Press the POWER-MENU key until LIGHT appears. Use the backlight for night fishing. Select either  
0 (Off), or 1 through 5 to activate the backlight at the desired level. (0 to 5, Default = 0)  
• Bottom View  
• Battery Alarm  
• Languages (International Units Only)  
• Units  
With this purchase you should have:  
NOTE: Continuous backlight operation will significantly decrease the battery life for RF15 Portables.  
• RF15 Control Head  
CAUTION: You will increase the possibility of breaking your line if you use light test pound line on your reel. The RSS  
is positively buoyant (is buoyant under its own weight plus 0.2 ounces of bait and lead weight.) The maximum amount  
of weight for any attachment to the RSS is approximately 0.2 ounces (5.67 grams), and includes the combined  
weight of any hook, line, weight, swivel/snap swivel and bait that is attached to the RSS. The RSS itself weighs 1  
ounce, and therefore light test line might break.  
• One Advanced Remote Sonar Sensor - RSS  
• Portable Carry Case  
• This RF15 Operations Manual  
Sensitivity  
• Channel Select.  
(Setting Saved in Memory)  
Press the POWER-MENU key until SENSITIVITY appears. Sensitivity controls how much detail is  
shown on the display. Increasing the sensitivity shows more sonar returns from small baitfish and  
suspended debris in the water; however, the display may become too cluttered. When operating in  
very clear water or greater depths, increased sensitivity shows weaker returns that may be of  
interest. Decreasing the sensitivity eliminates the clutter from the display that is sometimes present  
in murky or muddy water. If Sensitivity is adjusted too low, the display may not show many sonar  
returns that could be fish. (0 – 10, Default = 5)  
Scroll through all SetUp menu choices to exit the SetUp menu.  
If any of these components are missing or are not included, please contact our Customer Resource  
Center at 1-334-687-0503 or visit our website at www.humminbird.com  
Store the RSS in a dry, non-metallic container, such as a tackle box, in a separate compartment, and isolated from  
any metallic devices.  
.
Contrast (SetUp Menu)  
WARNING! This device should not be used as a navigational aid to prevent collision, grounding, boat damage, or  
personal injury. When the boat is moving, water depth may change too quickly to allow time for you to react. Always  
operate the boat at very slow speeds if you suspect shallow water or submerged objects.  
(Setting Saved in Memory)  
WARNING! The bottom of the RSS should not be handled during sonar operation, as this may cause physical  
discomfort and may result in personal injury in the form of tissue damage. Handle the RSS only by the antenna tower  
when it has been in the water.  
Make sure that the SetUp menu is selected, then press the POWER-MENU key until CONTRAST  
appears. Select a setting from 1 through 5. (1 to 5, Default = 3)  
WARNING! Disassembly and repair of this electronic unit should only be performed by authorized service  
personnel. Any modification of the serial number or attempt to repair the original equipment or accessories by  
unauthorized individuals will void the warranty. Handling and/or opening this unit may result in exposure to lead,  
in the form of solder.  
WARNING! The RSS (Remote Sonar Sensor) is not intended for use by children younger than 6 years old without  
adult supervision as the RSS may represent a choking hazard to small children.  
Scroll through all SetUp menu choices to exit the SetUp menu.  
Depth Range  
WARNING! Handling and/or opening this unit may result in exposure to lead, in the form of solder.  
Fish ID+ (SetUp Menu)  
(Setting Not Saved in Memory)  
WARNING! This product contains lead, a chemical known to the state of California to cause cancer, birth defects  
(Setting Saved in Memory)  
and other reproductive harm.  
RSS Power  
Press the POWER-MENU key until DEPTH RANGE appears. Automatic is the default setting. When  
in automatic, the lower range will be adjusted by the unit to follow the bottom. (Auto, 10 to 120  
Feet, Default = Auto)  
Make sure that the SetUp menu is selected, then press the POWER-MENU key until FISH ID+  
appears. Select either Off to view “raw” sonar returns, or On to view Fish symbols. Fish ID+ uses  
advanced signal processing to interpret sonar returns, and will display a Fish Symbol when very  
selective requirements are met. A select number of possible fish returns will be displayed with their  
associated depth. (On, Off, Default = On)  
The Advanced Remote Sonar Sensor (RSS) has a non-replaceable Lithium battery with a shelf  
life of three years that will last for approximately 500 hours of in-water use (when the nighttime  
LED is turned off).  
Using the RF15  
Simply attach the RSS to the end of your fishing line and cast it into the water as you would a  
normal float or lure, then power on the RF15 and you are ready to fish. Your RF15 uses sonar  
technology to send sound waves from the RSS into the water.  
NOTE: In manual operation, if the depth is greater than the depth range setting, the bottom will not be visible on the  
display. Select AUTO to return to automatic operation.  
Discard the used RSS in compliance with local laws as you would any electronic component  
or battery.  
Scroll through all SetUp menu choices to exit the SetUp menu.  
Zoom  
The RSS has contacts that perceive when the device is immersed in the water. These contacts  
turn on the Sonar Transmitter/Receiver and begin transmitting the sonar information via RF to  
the display. The RSS automatically stops using power a few seconds after being pulled out of  
the water.  
(Setting Not Saved in Memory)  
To scan an area, cast and then reel in at a steady  
rate with your rod tip up. Jerks may break water  
contact, causing gapped signal input. A low rod  
tip or heavy line may cause signal loss if the  
RSS submerges.  
Fish ID+  
Press the POWER-MENU key until ZOOM appears. Select Auto to magnify the area around the  
bottom in order to reveal fish and structure close to the bottom that may not be visible during  
normal operation. When ZOOM is set to Auto, the upper and lower Depth Ranges are automatically  
adjusted to keep the area above and below the bottom on the display. Select Off to return to normal  
operation. (Off, Auto, Manual Ranges, Default = Off)  
Raw Sonar  
WARNING! Do not place the RSS in a wet area when not in use as this will turn on the RSS and shorten its  
usable life. Store the RSS in a dry area when not in use to conserve power. Never place the RSS in a wet area  
of a boat or on a metal surface that could accidentally power it on.  
Bottom View (SetUp Menu)  
(Setting Saved in Memory)  
NOTE: If the RSS was used in salt water, rinse it with fresh water before storing it.  
Make sure that the SetUp menu is selected, then press the POWER-MENU key until BOTTOM VIEW  
appears. Bottom View selects the method used to represent the bottom and structure on the display.  
(Structure ID, Black, WhiteLine, Inverse, Default = Inverse)  
Powering ON and OFF  
Press and release the POWER-MENU key to power the RF15 on. Press and hold the POWER-MENU  
key until the unit shuts down to power off.  
Upper Zoom  
Range  
®
Structure ID represents weak returns as light pixels and strong returns as  
dark pixels. This has the benefit of ensuring that strong returns will be clearly  
visible on the display.  
Magnified Bottom  
with More Detail  
Structure  
Display  
The returned “echoes” are transmitted with wireless technology to the display unit and plotted on  
the LCD. New information appears on the right. As this information moves to the left a very accurate  
picture of the underwater world is created, including the depth of underwater objects such as the  
bottom, fish, and structures.  
Black (Bottom Black) displays all pixels below the bottom contour as black,  
regardless of signal strength. This has the benefit of providing a high contrast  
between the bottom and other sonar returns on the display.  
LEFT Arrow Key  
POWER/MENU Key  
RIGHT Arrow Key  
Lower Zoom  
Range  
WARNING! The electronic parts in the Remote Sonar Sensor (RSS) are made to withstand use when casting into  
water. Because shock from abrupt contact with rocks can damage your RSS, we recommend using your RSS in water  
deeper than 1 foot only.  
There is also a series of manual ranges which can be selected. The manual depth ranges are  
determined by the present depth conditions.  
®
WhiteLine highlights the strongest sonar returns in white resulting in a  
distinctive outline. This has the benefit of clearly defining the bottom on the  
display.  
Surface Clutter  
The Advanced RSS can be used in two distinct  
ways:  
Upper Range  
Water Surface Line  
Fish Alarm  
(Setting Saved in Memory)  
Depth – Measured at  
the Transducer  
When the RF15 powers on, the Start-Up menu temporarily appears.  
From this menu, use the arrow keys to select either Start-Up,  
Simulator, or SetUp. If you do nothing, the unit will default to normal  
on the water use.  
Sonar Graph: The RSS can be used to  
create a sonar graph of the bottom. Cast the  
RSS into the water beyond an area of  
interest. Retrieving the RSS slowly and  
steadily will produce a screen detailing  
structure, fish and bottom detail. Rhythmic  
wave action and rocking may cause the  
display of a rippled bottom.  
Temperature  
Press the POWER-MENU key until FISH ALARM appears.  
Select Off for no fish alarm, or one of the following symbols to set the alarm. An alarm will  
sound when the RF15 detects fish that correspond to the alarm setting. Fish Alarm will only  
sound if Fish ID+ is also set to On. (Off, Large, Large/Medium, All, Default = Off)  
Fish ID+ Symbols  
• Use Start-Up for on the water use  
• Use Simulator for learning how to use the system with simulated  
sonar data; access Simulator by pressing the Right Arrow Key once  
• Use SetUp to display additional set-up menu choices; access  
SetUp by pressing the RIGHT Arrow Key twice (See SetUp Menu for  
more information).  
Inverse is a method where weak returns are shown with dark pixels and strong  
returns with lighter pixels. This has the benefit of ensuring that weak signals will  
be clearly visible on the display.  
Large fish only  
Large/Medium fish only.  
All fish.  
Bottom Contour  
Structure  
Lower Range  
Stationary Float: The RSS can be used as a float in a stationary location to monitor the area below,  
giving you a live update as fish approach your bait.  
Scroll through all SetUp menu choices to exit the SetUp menu.  
The Menu System  
A simple menu system allows you to access your RF15’s adjustable settings. To activate the menu  
system, press the POWER-MENU key. Press the POWER-MENU key repeatedly to display the RF15  
menu settings, one at a time. When a menu setting is on the display, use the RIGHT and LEFT  
Arrow keys to adjust the menu setting. Menu settings are removed from the screen automatically  
after several seconds. In Normal operating mode, most menu settings saved to memory will not  
return to their default values when the unit is turned off. See individual menu choices for more  
information.  
Attaching the RSS  
Filter  
Battery Alarm (SetUp Menu)  
The line coming from your reel can be tied off to the front hole in the RSS. If you wish to also use the  
RSS as a conventional float, use the second hole to attach your hook using a lighter weight line. A  
snag will break the lighter line if you have to break free. Slip line techniques are not recommended  
because of the higher risk of losing the RSS. If you do use the slip line method, use a lighter weight  
line after the lower stop, enabling retrieval of the RSS if the lower line with hook breaks away.  
(Setting Saved in Memory)  
(Setting Saved in Memory)  
Make sure that the SetUp menu is selected, then press the POWER-MENU key until BATTERY ALARM  
appears. Select Off or 8.5 to 13.5 Volts. Battery Alarm sounds when the input battery voltage is equal  
to or less than the menu setting. (Off, 8.5 to 13.5 Volts, Default = Off)  
Press the POWER-MENU key until FILTER appears. Select either Off or On. Filter adjusts the sonar  
filter to limit interference on the display from sources such as your boat engine, turbulence, or other  
sonar devices. (On, Off, Default = Off)  
Scroll through all SetUp menu choices to exit the SetUp menu.  
 

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