iphone app is called Antenna Mate, think around $3..I had similar issues on my first outing, couldn't understand why I wasn't getting any signal and others were. Good friend of mine reminded be of the "little black amplifier button" up by the sink. we yes it turned green but still no signal. removed the cable from the antenna socket by the door and put it into the socket by the sink and bingo..then took the cable back over to the socket by the door and still worked, no idea why. First service coming up and I will let them figure it out...