Or you can do like I do. I have a Bluetooth fm transmitter that transmits on certain radio frequency that you pick and you just set your radio to that station.
Where I live, that is virtually impossible. All of the frequencies that these sorts of devices use are in use. At least the last time I tried this, I also found that my car antenna was either too far away from the device, of the device wasn't powerful enough, to get a good signal when I did find one. And then you pass a lot of cars tuned to the same frequencies that interrupt what you are listening to. The aux jack devices are a lot more reliable IMHO. (Though I solved this for good by installing a Kenwood BT radio with USB connection myself.)
Has anyone found a USB-C cable that also has an audio jack? I use the aux for audio in my car, but need to charge my Moto Z, as well.
That's the one I have in my 03 Z71... The antenna is on the far side of the truck,but this is right by the radio plugged in... Most FREQS around here are used also but this stomps all over the one I use... As long as a signal is playing it overpowers the broadcast... If the Bluetooth is a dead air you can hear a little backgroundI drive a company vehicle and I can't swap out the stereo. So I bought this:
https://goto.walmart.com/c/1943169/...-Supports-USB-Disk-and-Micro-SD-Card/46997832
You can either plug it into Aux, or it will broadcast over FM. You could also use it as a traditional wired FM transmitter. It's not perfect (what Bluetooth device is?) but it works well enough for me.