Hello dear friends.First of all i am not sure if i am posting the problem to the correct page.Sorry for it.And the problem is, i bought a fm transmitter for my car.I can put usb disk, sd card or connect my phone and it plays the songs and shares them to the car's player by radio frequencies.But the problem is, the sound quality is really poor, maybe poorer than the regular FM channels.It has much of sizzles on the songs.So i wanted to solder a wire to the transmitter as an antenna to take some gain about the sound quality.But when i uninstalled the case i couldnt see a pad to solder for any antenna.Maybe i didn't see or there wasn't a pad to add it.So i am sharing the photos of the board, and i would like to know if i could do anything to make it better.I will be waiting for your helps about both the antenna or the others.Is there a way to do to make the transmitter work better?Thank you.