Sirius XM RAdio XM Onyx User Manual page 74

Configuring Your OnyX
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2 Manually tune through your local FM channels
Manually tune through your local FM channels on your vehicle's FM radio.
Turn on your vehicle's FM radio. Start at 88.1 and use the 'Manual' tune
function on your vehicle's FM radio to tune through each FM channel one-
by-one (88.1 followed by 88.3 etc.) to locate channels that aren't being used
by a local FM radio station. Write down each FM channel that has only static
or silence on it, until you reach 107.9. Once you have created your list of
available FM channels, you will need to find the one that provides the best
match for OnyX.
Tune OnyX to a favorite XM channel (or to channel 1, if it's not activated).
Pick the first FM channel on your list and tune the FM radio to that channel.
Then tune OnyX to the same FM channel. (Refer to "Set and Select an FM
Channel" on page 76.) You should hear the XM channel through your vehicle's
radio. If you are satisfied with the sound quality, you're done! If this FM
channel doesn't work well for you, work down the list until you find an FM
channel that allows you to hear XM clearly.
NOTE! You may find an FM channel with static or silence that does not work with
OnyX. It is possible that some type of inaudible interference is present that
prevents reception of the XM broadcast. Your only options are to use another FM
channel or a different audio connection method.
TIP! If you regularly drive from one location to another, such as your daily
commute, you may need to use different FM channels along your route for best
performance. If this is the case, we recommend saving the best FM channels as
presets on your FM radio and OnyX. Then you simply select and match the best
channel for the area you are in.
TIP! It will be much more difficult to find available FM channels in large cities
than in most suburban or rural locations. A direct audio connection using the
Aux In Cable, Cassette Adapter, or professional installation is your best solution
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