The Channel Master television antenna preamplifier will amplify digital and HD signals received by your antenna. This antenna amplifier is a high gain, higher noise then orignal 7778 preamplifier used for medium to weak signal areas to allow a weak signal that is present at the antenna to be amplified to a viewable strength. The CM7778 preamp offers less gain than the CM7777 but still has plenty of gain to get the signal from the antenna to the TV set. This preamp is a perfect choice if you are in a medium strength signal area but are still having trouble receiving good signals. Preamplifiers are also used if you anticipate distributing your signal with a digital splitter to multiple outlets throughout your house as splitters reduce the signal strength available at each output. 16DB gain approx 4DB Noise.


SPECIFICATIONS:

• Combined VHF/UHF inputs
• Gain: 16 dB, 54 to 860 MHz
• Includes a switchable FM trap
• Outdoor rated housing
• Mast mounted amplification unit with indoor power supply which connect via coaxial cable
• Preamplifier and its power supply can withstand up to 140° F temperatures

The power supply that comes with this amp goes inside the building, so you do not have to run a separate cable for power.  The unit inside the building injects voltage up the coax cable, so there is no need to put a power supply outside.  Be sure not to place any devices in-line between the pre-amp and power supply, or the voltage will be blocked and the unit will not function correctly.