Navico LHR20US Users Manual
LHR-20/22
Operation Instructions
www.lowrance.com
Pub. 988-0158-091
LHR-20
Copyright © 2007 Navico
All rights reserved.
Lowrance
® is a registered trademark of Navico
No part of this manual may be copied, reproduced, republished, transmitted
or distributed for any purpose, without prior written consent of Lowrance
Electronics. Any unauthorized commercial distribution of this manual is
strictly prohibited.
Lowrance Electronics may find it necessary to change or end our policies,
regulations, and special offers at any time. We reserve the right to do so without
notice. All features and specifications subject to change without notice. All
screens in this manual are simulated. On the cover:
LHR-20/22 shown. Other
models covered in the manual are similar.
For free owner’s manuals and the most current information on this product, its
operation and accessories, visit our web site: www.
lowrance.com
Lowrance Electronics
P.O. Box 669
Catoosa, OK USA 74015
Printed in China.
IMPORTANT SAFETY INFORMATION
Please read carefully before installation and use.
CAUTION
!
!
DANGER
WARNING
This is the safety alert symbol. It is used to alert you to potential personal
injury hazards, Obey all safety messages that follow this symbol to
avoidpossible injury or death.
CAUTION
!
!
WARNING
WARNING indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury
CAUTION
!
CAUTION indicates a potentially hazardous situation which, if not avoided,
could result in minor or moderate injury.
CAUTION
!
!
CAUTION
DANGER
WARNING
CAUTION used without the safety alert symbol indicates a potentially
hazardous situ ation whic h, if not avoided, may result in prope rty
damage.
Lowrance LHR-20/22 Operation Instructions 3
Table of Contents
Introduction .............................................................................................................................................4
Safety and Operational Information .........................................................................................................5
Display .....................................................................................................................................................5
Function and Location of the Controls .......................................................................................................6
Before Using Your Radio ...........................................................................................................................7
1. Charging and Installing the Li-ion polymer battery pack . . . . . . . . . . . . . . . . . . . . . . . . . 7
2. Installing the antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3. Installing the belt clip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Using Your Radio .......................................................................................................................................9
1. Turning the power on/off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
2. Adjusting squelch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3. Transmitting and receiving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4. Accessing the 16/9 priority channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5. Selecting channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6. Selecting high/low power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7. Locking the keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8. Adding channels to memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9. Accessing channels saved to memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
10. Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
11. Using the WATCH modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
12. Selecting a WX (weather) channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
13. Weather Alert Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
14. Selecting the U.S./International/Canadian band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
15. Resetting the radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Maintenance .......................................................................................................................................... 14
Technical Specifications .......................................................................................................................... 15
Frequency Charts .................................................................................................................................... 16
FCC Compliance
...................................................................................................................................23
Lowrance Warranty ................................................................................................................................24
How to Obtain Service .............................................................................................................................25
Lowrance LHR-20/22 Operation Instructions4
Introduction
Congratulations on your purchase of this Lowrance handheld marine band VHF radio. Designed
for international operation, allows you to transmit and receive on all international channels in the
VHF marine band, as assigned by the International Union (ITU). The LHR-20/22 is approved with
commercial-grade standards to give you clear, reliable communication.
NOTE: According to WEEE regulations, the user should not dispose the product when damaged,
but rather send it back to Lowrance for disposal. Refer to
How to Obtain Service section for
instructions to contact Lowrance.
This manual addresses both the LHR-20 and LHR-22 models. Both models function identically,
only the LHR-22 has a CAMO pattern and additional AA Battery tray is supplied.
Your radio has the following features:
Channel 16/9 Priority Key
Provide quick access to emergency channel 16, the universal and most frequently-used marine
channel, which is used for distress or safety communications. Pressing and holding the 16/9
channel key for 3 seconds allows quick and easy access to Channel 9. Channel 9 is an alternate
frequency for distress or safety in some areas in the event Channel 16 is congested.
PLL (Phase Lock Loop) Controlled Circuitry
Provides accurate and stable channel selection.
Squelch Adjustment
Help eliminate noise between transmissions.
Key Lock
Let’s you lock the keypad in order to prevent the controls from accidental pressing.
High/Low Power Selection
Let’s you save power by selecting a suitable transmitting power for long or short distances.
Battery Level Indicator
Indicates the bat tery pack condition.
Signal Strength indicator
Displays the relative strength of the RX and TX signals.
Supplied Battery Charger
Allows you to conveniently recharge your radio battery pack.
Backlight LCD Display
Allows you to operate the radio in a darkened environment.
Memory Channels
Let’s you store channels as memory channels.
WX/UIC Key
Allows you to select Weather Band, U.S. Channel Band, International Channel Band or Canadian
Channel Band. This key is also used to select Weather Aler t ON/OFF.
DW/TRI key
Allows you to Dual Watch your current working channel and CH16 or Tri Watch adding CH9 to the
scan.
Camouflage pattern (LHR-22)
Lowrance LHR-20/22 Operation Instructions 5
Safety and Operational Information
Display
Your radio comes with a multifunctional display.
CAUTION
!
!
CAUTION
DANGER
WARNING
Your hand-held marine VHF radio contains a low power transmitter. When the Push-To-Talk
(PTT) button is pushed, the radio will transmit a Radio Frequency (RF) signal.
Memory M ode indicator
Receiving i ndicator
Transmiting ind icator
Low power tra nsmit indicator
High power tr ansmit indicator
Priorit y channel indicato r
Scan mode in dicator
Signal level in dicator
ATIS indicator (EU ve rsion)
Key lock indic ator
Internati onal channel indicator
Canada chann el indicator (USA versio n)
Weather stat ion indicator (USA vers ion)
Weather stat ion
alarm (USA vers ion)
Memory C hannel indicator
Dual watch mo de indicator
Tri-watch mode i ndicator
Batter y level indicator
This channel can only receive
not transmit indicator
Channel numb er
This channel can only receive
and transmit by same f requency
USA channel indi cator
!
WARNING
Never leave your radio in a closed car or trunk; the ex tremely high temperatures generated in
hot weather can damage the electronics.
Signal Strength indicator
Displays th e relative strengt h of the RX and TX signals .
When TX is s et to HI (High)
When TX is s et to LO (Low)
Fully charge d - Normal operation
Normal op eration
Normal op eration
Low batter y - needs charging
Battery Level indicator
Displays th e remaining batter y capacity.
Lowrance LHR-20/22 Operation Instructions6
Antenna
PWR/VOL Knob
SQL (squelch) Knob
Speaker
Microphone
UP Key
SCAN Key
DW/TRI Watch Key
WX/UIC Key
Transmitting LED
PTT (Push To Talk)
Key
LCD Display
MEM (Memory) Key
Channel
16/9 Key
H/L/LOCK Key
DOWN Key
Function and Location of the Controls
Lowrance LHR-20/22 Operation Instructions 7
Before Using your Radio
Before using your radio, you should make the following preparations:
Carefully inspect the package contents for: the radio, battery pack, antenna, AC/DC wall adapter,
cradle charger, wrist strap, belt clip, and this manual (including product warranty).
1. Fully charge the Li-ion polymer battery pack for a minimum 3.5 hours and install it onto the
radio.
2. Install the antenna onto the radio.
3. Install the belt clip onto the radio.
1. Charging an d Installing the Li -ion Polymer Battery Pack
Install the Li-ion polymer battery pack onto the radio:
Use a coin or screwdriver rotate the screw lock clockwise to lock the battery pack onto the radio.
(Coin)
You can either charge the Li-ion
polymer battery pack when it is
attached to the radio or separated:
1. Insert the adapter plug into the
cradle charger unit;
2. Connect the AC wall adapter into a
standard wall jack;
3. Insert the battery pack or the radio
with the battery tray attached into
the cradle charger.
Lowrance LHR-20/22 Operation Instructions8
2. Installing the Antenna
You will need to make sure that the f lexible antenna is attached to the radio. Ensure the radio is
turned OFF anytime that the antenna is not connected.
Installing the antenna:
Rotate the antenna clockwise to fasten securely to the threaded connector
on the top of the radio.
CAUTION
!
!
CAUTION
DANGER
WARNING
Remember to remove the radio after about 3-4 hours of charging time on the charger to
maximize battery life. Overcharging batteries may result in damage to both the battery pack
and radio.
Note: Do not operate the radio or press PTT key without an antenna installed.
The cradle charger indicator LED on the front of the charging lights when it is receiving voltage
from the AC adapter:
RED means the batteries are charging.
GREEN means the batteries are fully charged. You should charge the battery pack
for about 3.5 hours.
Attach the battery pack to the radio when it is finished charging.
Lowrance LHR-20/22 Operation Instructions 9
3. Installing the Belt Clip
The belt clip supplied with your radio allows you to attach the radio to your belt. To install the belt
clip: slide the belt clip to the back of your radio, make sure that the fitting Groove is aligned.
Using Your Radio
You should familiarize yourself with the following operating procedures:
1. Turning the unit on/off.
2. Adjusting Squelch.
3. Transmitting and receiving.
4. Accessing the 16/9 priority channels.
5. Selecting channels.
6. Selecting high/low power.
7. Locking the keypad.
8. Adding channels to memory.
9. Scanning channels.
10. Accessing channels saved to memory.
11. Using the WATCH modes.
12. Selecting a WX (weather) channel.
13. Weather Alert operation.
14. Selecting U.S./International/Canadian Band
15. Resetting the radio
1. Turning the Power On/Off
Use PWR/VOL knob to turn on the radio, once on, adjust the volume as well.
To turn on the r adio:
1. Rotate the PWR/VOL knob to turn the radio on or off. The knob will make a “click” sound
when the radio is turned on. The last used channel will appear on the LCD display.
2. Once on, rotate the
PWR/VOL knob further to adjust the volume.
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