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Tv Reception
At the >Start MAPS< part of tvfool the antenna height can be changed up and down and the red balloon pointer can be moved to other locations. The NM = Noise Margin for reliable reception is 0 NM dB . Watch what happens to the NM when the antenna height is changed. The more positive the number the better , the more negative the number the worse. Noise Margins are calculated to be usable signal at the Tv. The set up is like this , a simple dipole tv antenna , coax cable and one Tv. If you will like to dive off in to the Noise Margin swimming pool more info. can be found on this web site and the internet. Any way try the reception with out a antenna preamp. for now , and see what you get. Some popular antenna mounts are the tripod mount , chimney mount and eave mount. The HD7084P is a big antenna so use a Strong and Strudy mount.
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