I am looking for a circuit for a TV signal amplfier that mounts at the antenna. It has a power supply inside at the TV which sends DC power up the feedline to the amp. The amp sends the amplified signal (25-30 db of gain) down the same feedline. Amplfied in this way there is minimum of noise being amplifed compared with a unit that is located totally at the TV. Ideally that it would be limited to UHF and possibly VHF frequencies.