Lowrance electronic LHR-20 用户手册

Lowrance LHR-20/22 Operation Instructions

To select a channel:

Use or (UP/DOWN) key to find a channel. Stop when you find the desired channel.
NOTE: Not all channel numbers are available in INT bands, see marine Channel charts at the back

of this manual.

6. Selecting High/Low Power

You must press and release H/L/LOCK key to toggle the transmit power between high and low.

Select high (High power transmit) for long-range communications, and select low (Low power

transmit) for short-range communications to save battery power.

To change the transmit power:

Press H/L/LOCK key to toggle between High and Low transmit power. When the radio is
operating at high power, the “HI” icon appears on the LCD display, and when operating at low
power, the “LO” icon appears on the LCD display. The H/L setting is applied to all the channels

in the channel bank. Anytime the priority CH 16 is selected, it will always be at HI power. For USA

operation, CH 13 and 67 are always low power initially and will go to high if the H/L key is held

down while transmitting.

7. Locking the Keypad

Use H/L/LOCK key to activate the Key Lock function in order to avoid accidental key press of the

radio keypad.

To lock and unlock the keypad:

1. To lock the keypad, press and hold the H/L/LOCK key until the “Key Lock” icon appears on

the LCD display.

2. To unlock the keypad, press and hold the H/L/LOCK key again until the “Key Lock” icon

disappears from the LCD display.

NOTE: Once Key Lock is turned on, pressing the keys will have no effect except for the PTT key,

which is not affected by Key Lock.

8. Adding/Deleting Channels to/from Memory

Your radio can store any channel (except WX channels). The stored channels are also the channels

scanned in the Memory Scan mode.

To add channels to memory:

1. During normal operating mode, use or (UP/DOWN keys to select the desired channel

for saving.

2. Press and hold MEM key for 3 seconds. The “M” (Memory Channel) icon will appear, indicating

that the current channel has been saved into memory. Any number of channels can be saved.

To delete channels from memory:

1. During normal operating mode, use or (UP/DOWN) keys to select the saved channel

you wish to delete. The “M” (Memory Channel) icon appears.

2. Press and hold MEM key for 3 seconds. The “M” (Memory Channel) icon disappears, and the

selected. The selected channel will be removed from the scan memory.