THe Winegard Sensar Pro then is what you want, 100 bucks (Rounded) one time, it goes between the box of many buttons and the antenna, it eats 12 volt..
NOTE: if you have a DVR (Stand alone like a TiVo) you can feed it's #2 output to the DVR, then you can feed your Sat Receiver (if you have one) to the DVR via A/V or HDMI leads.. That way you can record OTA as well as Sat shows.
I have TWO DVR's here, one on each out of the Sensar Pro.
The Sensar Pro also gives you an adjustable gain 2ndary pre-amp. Makes a big difference in the number of stations I can get. Fits in a standard house type outlet box.