877-825-5572
1699 West Fifth Street
Eureka, MO 63025
www.terrestrial-digital.com
When using separate antennas, mounted on the same mast, try and keep at least 4-6 feet vertical separation between antennas. UHF Yagi-style anten-
nas can usually be mounted with about a 4-foot vertical separation. If you want to combine signals so that you have only one lead going into your
house, use a UHF/VHF combiner which includes a channel filter for each antenna, so as not to pick up out-of phase signals through the other antenna.
UHF signals are line-of-sight, so clear any obstacles between you and the transmitting towers. Also, moving the antenna to different locations in
your attic/roof is advised. Often, experimentation with antenna location resolves a problem. Keep the antenna away from any metallic objects.
Mount your antenna away from all reflective surfaces or other antennas.
There may be issues with your digital tuner. Faulty decoding chips or bad firmware can affect sensitivity making it difficult to tune digital stations.
Reflected signals (Multi-path interference) are often a source of problems. For those living close to transmitting towers, multi-path interference
occurs when strong signals bounce off nearby buildings and other surfaces causing signal dropouts. If your transmit towers are close, try aiming
your antenna in different directions away from the towers and check for more stations received. Users very close to the transmitters can use an
attenuator to lower the signal strength to reduce multi-path interference. If you live less than 5 miles from your local transmitters, you may need
a variable attenuator to reduce the signal to a level that will not overload your HDTV set.
In rural areas, 20 – 50 miles distant from the transmitter, an outdoor antenna equipped with an amplifier (http://www.antennasdirect.com/an-
tenna_amplifier.html) can provide good reception especially if the signal is not blocked by terrain (hills, etc.)
Another common cause of poor reception is strong signals from FM Radio and TV stations.Your antenna brings in the whole broadcast spectrum
and this can overwhelm a receiver. Too much signal is just as bad as too little. Remember, your antenna delivers ALL TV and FM stations to your
DTV tuner at once.
Optional Grounding Information
Grounding the coax cable with a coaxial lighting surge protector will protect your equipment from voltage surges created by nearby strikes but
will not protect from a direct strike.
To protect yourself from a direct strike attach a lightening arrester to the antenna mast. Connect #8 gauge wire to a copper clad ground rod driv-
ing it at least four feet into the ground. Check your local electrical codes to make sure you are in compliance– We recommend calling a profes-
sional electrician to advise and/or install.
WATCH FOR WIRES!
Installation of this product near power lines is dangerous. For your own safety, follow these important safety rules.
1. Perform as many functions as possible on the ground.
2. Watch out for overhead power lines. Check the distance to the power lines before starting
installation. We recommend you stay a minimum of 6 meters (20 feet) from all power lines.
3. Do not install antenna or mast assembly on a windy day.
4. If you start to drop antenna or mast assembly, get away from it and let if fall.
5. If any part of the antenna or mast assembly comes in contact with a power line,
call your local power company. DO NOT TRY TO REMOVE IT YOURSELF!
They will remove it safely.
6. Make sure that the mast assembly is properly grounded.
WARNING
Installing antennas on windy days can be dangerous. Because of the antenna surface,
even slight winds create strong forces. Be prepared to safely handle these forces at
unexpected moments. Do not attempt to assemble, move or mount antenna on windy
days or serious, even fatal accidents may occur. Antennas Direct Inc. is not responsible
or liable for damage or injury resulting from antenna installations.
WARNING
Antennas improperly installed or installed to an inadequate structure are very suscep-
tible to wind damage. This damage can be very serious or even life threatening.The
owner and installer assumes full responsibility that the installation is structurally sound to support all loads (weight, wind & ice) and properly
sealed against leaks. Antennas Direct Inc. will not accept liability for any damage caused by an antenna system due to the many unknown variable
applications.
WARNING
Do not attempt to install if drunk, pregnant or both.
Do not eat antenna.
Do not throw antenna at spouse.
Power Service Grounding Electrode System
Grounding Conductors
Ground
Clamps
Electric Service
Equipment
Ground Clamp
Antenna Cable
Antenna Discharge Unit
