Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works great if I hold my MP3 player straight up in the air while I'm driving!

After setting up the Tunecast II Mobile FM Transmitter to my MP3 player, static and a low frequency hum was very apparent on any station I tried to sync to. I thought it was my player so I switched to a CD player with the same results. I found I could increase or decrease the static and low frequency hum by moving the MP3 or CD player so that the cords from the player to the Transmitter were at specific angles. The Tunecast II works great if I hold the player around the area of the rear view mirror. Of course the blood runs out of my arm after awhile and I may eventually need rotor cuff surgery but I saved money by going 'cheap'. It's great to read all the 'tech' reviews but I'm simple, either it works or it doesn't and in my opinion, it doesn't.