5. How to use the RR13 radio function?

1. Slide the Band/Mode selector switch up or down to switch between FM1/FM2:

FM1: 87MHz–108MHz; if your favorite stations are in this range, switch to FM1.

FM2: 76MHz–90MHz; if your favorite stations are in this range, switch to FM2.

2. After switching to the desired band, rotate the Tuning knob up or down to search for stations. Rotate the knob upward to decrease the frequency; rotate the knob downward to increase the frequency.

3. There are two output modes, and you can slide the Output selector switch to switch between HP/SPK:

HP (headphone out): Connect 3.5mm headphones directly to the 3.5mm headphone port for audio output.

SKP (speaker out): Connect the external telescopic antenna to the 3.5mm headphone port to enhance radio signal reception. Audio will be played through the device’s built-in speaker.

4. Use the Tuning indicator light to judge signal strength:

Brightly lit—strong signal; dimly lit—moderate signal; off—no signal received. If the FM signal is poor, try adjusting the direction of the headphones or moving to an open area.

You can also slide the BASS adjustment switch to switch between BASS OFF (Sound effect disabled)/BASS 1 (bass enhancement effect)/BASS 2 (bass enhancement + 3D surround sound effect) to optimize your listening experience.