The Channel Master television antenna booster (preamplifier) will amplify digital and HD signals received by your antenna. This antenna amplifier is a high gain, low noise 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.
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
Power supply is included; output voltage is +15 VDC, UL listed
Impedance (Input and Output): 75 Ohm
Connectors (Input and Output): Type "F"
Frequency range: 30 MHz to 860 MHz
Gain: 16 dB
Noise Figure (Typical): 2.8 dB
Q. Which pre-amp do I need?
A. Look up your location on www.antennaweb.org. If you have a TV transmit station within 20 miles, we recommend either the 0068DSB or the 7778.
If you do not have a TV transmit station within 20 miles, we recommend the 7777.
Q. My reception is worse after installing the pre-amplifier.
A. Insure that there is not a splitter in the cable line between the pre-amplifier and the pre-amplifier power supply.
A. Try replacing the cable between the pre-amplifier and the power supply.
A. Insure you have properly installed the pre-amplifier per the instructions. Introduction to the Channel Master preamplifier Video Channel Master preamplifier troubleshooting Video
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