Instructions apply to all FM transmitters compatible with mobile devices.
To use them properly, you have to find a frequency free of interference.
However, if you live in a city, finding a clear frequency is harder.
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The transmitters are weak and can only broadcast a few feet.
This is both good and bad.
It’s bad because weak signals are vulnerable to interference.
The interference can even happen at nearby frequencies.
For example, a radio station on 89.9 can make 89.7 and 90.1 unusable for transmitter audio, too.
Use them when traveling to find a frequency for your music.
FAQ
Yes.
All commercially available FM transmitters for cars meet this standard.
Some auto shops, like AutoZone, carry them as well.
