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The information in this manual has been gathered from some of the most experiencedantenna installation professionals in the country and compiled by Channel Master® field engineers. It is intended for technicians who are, or plan to become professional antenna installers. Any handy "do~it~yourself" consumer can mount an antenna, run transmission line and pull in some kind of a signal. But only a professional can select and precisely install the correct antenna and assure his customers years of superior TV/FM reception.
Back in the 1940s, TV antennas were actually manufactured by hand at the installation site. Each antenna was assembled, piece by piece, at the customer's home. Channel Master eliminated this time-consuming labor by introducing the first preassembled TV antenna, providing excellent reception in all areas and at reasonable prices.
Today medium-to-high gain, broadband antennas are essential for good reception. Even the most expensive color TV or FM stereo receiver can't perform to full potential without the strong signals that only aquality antenna system can provide.
Advanced antenna theory and design is not included in this manual. The greatest emphasis is on practical, time tested methods and procedures for properly installing TV and FM antennas. With this foundation of knowledge, you can build your reputation as a professional antenna installer-one who is capable of assuring his customers the finest performance from today's sophisticated TV and FM equipment.
A WORD ABOUT ANTENNA SPECIFICATIONS
Sensitivity ratings are based on optimum conditions over unobstructed terrain. What lies between a transmitter and an antenna installation will have a direct bearing on what type of antenna is appropriate.
Factors to consider are: the power output and height of a transmitting antenna tower, the type of terrain between the tower and the receiving antenna, and the size and number of buildings that lie in the path of the transmission.
All Channel Master VHF/FM and UHF/VHF/FM antennas have sensitivity classifications such as "fringe", "suburban," "deep fringe," etc. These classifications are designed to indicate at what distance from a TV transmitter the antenna will provide the best reception. Our antenna lab has computed the following chart as a general guide:
Area Designation For VHF For UHF
Deepest Fringe 100+ miles 60+ miles
Deep Fringe 100 miles 60 miles
Fringe 80 miles 45 miles
Near Fringe 60 miles 35 miles
Far Suburban 50 miles 35 miles
Suburban 45 miles 35 miles
Far Metropolitan 30 miles 25 miles
Metropolitan 25 miles 15 miles
You can enter your address at the web page ANTENNAWEB.ORG and they will tell you most of the channels you will be able to receive over the air with an antenna in your location.
They also teel the direction the stations will be transmitted from and about how large an antenna you will need. They will rate antennas by color chart. Match the color to the CM antennas
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