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Old 4-Jun-2017, 7:34 PM   #15
rabbit73
Retired A/V Tech
 
Join Date: Aug 2012
Location: S.E. VA
Posts: 2,747
Quote:
Originally Posted by urhstry View Post
Google Earth shows my home at 875'. WQPX states their antenna height is at 1160ft. A neighbor about 100 yards from me can get the stations I can not, and he is further away by distance so something is blocking my path. I got a guy with an 80' bucket truck... I may require his help.
I tried different antenna heights using the tvfool interactive map browser:

WQPX Noise Margin
10 ft, -10.8 dB NM
25 ft, -13.5 dB
40 ft, -13.5 dB
50 ft, -13.3 dB
75 ft, -12.4 dB
100 ft, -11.9 dB
150 ft, -11.0 dB
200 ft, -8.9 dB
250 ft, -6.8 dB
300 ft, -4.5 dB
350 ft, -2.3 dB
400 ft, -0.2 dB
450 ft, +1.7 dB
500 ft, +3.7 dB, but still 2Edge because of terrain interference

What is interesting is the better NM at 10 ft which is the default height I used in the report I did. The better number at 10 feet than at 40 feet is probably because of signal enhancement from ground reflection; I've seen it before.

You would have to go pretty high for a big improvement in NM and I don't see a lot of higher areas on your property.

That just leaves tweaks to your antenna system.
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Last edited by rabbit73; 4-Jun-2017 at 7:38 PM.
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