Aiwa JAX-S5 Operating Instructions Manual page 15

Adjustments
Antennas
Keep antennas away from metallic objects, electrical equipment
and cords.
FM antenna: Extend fully and position for the best reception.
If receiving condition is poor, connect optional outdoor antenna
FM 75 Ω terminal. Use an adapter as required.
to
AM antenna: Rotate to find best reception.
To switch to monaural FM reception
Press SHIFT+TUNER MODE on the remote. With each press,
"MONO" and "STEREO" appear alternately in the display.
Tip:
When FM stereo reception is poor, switching to monaural
En
reduces noise.
To switch the AM tuning interval
Hold down TUNER/BAND and press POWER on the unit. With
each press, the AM tuning interval alternates between 9 kHz/
step and 10 kHz/step.
Tip:
The default is 10 kHz/step. Change it only when using the
unit in a 9 kHz/step area. Switching AM tuning interval clears
all the preset stations.
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