Garmin rino 520 User Manual

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Setting the code to 0 (code off) allows you to hear all 

activity on the selected channel, but you must be set to 

the same code as the other person(s) to transmit back. See 

the “Appendix” for a table listing all of the 38 Codes and 

their frequencies.
As you change channels, the Rino 520/530 remembers 

the last channel/code combination that you were using. 

For example, you may set the unit channel to 5 and code 

to 21, then change the channel to 8 and code to 2. If you 

change the channel back to 5, the  code changes back to 

its previous setting of 21. See the “Appendix” for more 

information on FRS/GMRS and its operational aspects.

1.  Using the Thumb Stick, highlight the 

Channel or 

Code field and then press the Thumb Stick In to 

show a list of available channels/codes.

2.  Move the 

Thumb Stick Up or Down to scroll 

through the selections. Because not all the items 

fit in the window, a slider bar on the right side 

indicates your current position in the list.

3.  Highlight the selection, press the 

Thumb Stick In.

1.  Press the 

Volume Control (V) button to display 

the Volume/Squelch Level Control window.

2.  Move the 

Thumb Stick Up or Down to adjust the 

volume level.

3.  Use the 

Thumb Stick to set the squelch level by 

moving the slider all the way to the Left to unmute 

the background noise (weak signals that you don’t 

want to hear). Then slowly 

move it to the Right until the 

background noise stops. The 

squelch is set. 

Volume/Squelch Adjustment

Choose from 38 codes. Setting 

the unit to zero will allow you to 

hear all transmissions on that 

channel, but you must be on the 

same code to radio back.