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Overview: The Channel Master 4221HD antenna
is designed for UHF frequencies only (channels 14-69), both digital and analog. It can be mounted
on a roof, on a wall, to a chimney, or in an attic.
Mounting Brackets: The mounting brackets and the
U-bolt are used to mount the antenna to a mast. The outer diameter of the mast
should be approximately 1-1/4 inches.
Turning Radius: If using a rotor on the antenna mast, make sure
a 12-1/4" turning radius around the antenna is clear of obstruction.
Grounding: The antenna and mast should be
properly grounded. Grounding provides lightning protection for the antenna and
your TV set.
Note: No grounding hardware is provided with the antenna.
Connections: The balun is
built-in (attached at the factory) and has a female F-type connector. The included waterproof
rubber weather boot should be installed over the cable connection to guard
against corrosion. A twist-on threaded F-connector is also included.
cable is not provided, RG-6 is recommended.
Operating Range: The rated range of the 4221HD is 45 miles, but the distance
is approximate, actual performance depends on too many variables to predict accurately.
Gain: The average gain across the UHF frequency range is