Lowrance electronic LHR-20 Manuel D’Utilisation

Lowrance LHR-20/22  Operation Instructions

13

This radio is equipped with two types of monitor modes: Dual Watch and Tri Watch. 

Dual Watch monitors the current working channel and Channel 16 alternately.

1.  Press and release DW/TRI Watch key to activate the Dual Watch mode. The “DU” icon will 

appear on the LCD display. 

2.  Press and release DW/TRI Watch key again to terminate Dual Watch mode and return to the 

previous working channel. 

 

or...

3.  Press and hold DW/TRI Watch key for 3 seconds to terminate Dual Watch mode and enter into 

Tri Watch mode. The “TRI” icon will appear on the LCD display. 

NOTE: During Dual Watch mode, SCAN, MEM, WX/UIC, and   or   (UP/DOWN) keys are 

inactive and will sound an error beep if pressed. 
Tri Watch watches Channel 16, Channel 9 and the current working channels. 

1.  Press and hold DW/TRI Watch key for 3 seconds to activate the Tri Watch mode. The “TRI” 

icon will appear on the LCD display. 

2.  Press and hold DW/TRI Watch key again for 3 seconds to terminate Tri Watch Mode and to 

return to the previous working channel. 

or...
3.  Press and release DW/TRI Watch key to terminate Tri Watch mode and enter into Dual Watch 

mode. The “DU” icon will appear on the LCD display. 

NOTE:  During Tri Watch mode, SCAN, MEM, WX/UIC and   or   (UP/DOWN) keys are inactive 

and will sound an error beep when pressed. 

1.   Press and release the WX/UIC key to enter Weather mode. The “WX” icon will appear on the 

LCD. 

2.   Press the UP or DOWN keys to select a WX channel - see marine Channel charts at the back of 

this manual.

3.   Press and release the WX/UIC key again to return to normal operation. 
NOTE: During Weather mode, the PTT, H/L/LOCK, MEM and SCAN keys are inactive and an will 

sound error beep when pressed.