I\'ve owned two FM transmitters like this. The first was similar to the SI Link, in that it had only a set number of stations. It worked great on road trips, but as soon as I got back into the LA area there was too much interference and all the presets were getting stepped on by local stations
That prompted me to buy another version that allows you to manually adjust the broadcast freq across a larger swath of the FM spectrum, allowing me to always align with an empty space. Are there local stations across, or in the middle of 88.1, 88.3, 88.5 or 88.7 MHz?
In both cases the range was extremely poor.