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Old 12-Jul-2012, 10:53 PM   #11
GroundUrMast
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Join Date: Oct 2010
Location: Greater Seattle Area
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Presuming WDAF is the weakest signal on your report that you expect to receive, the CM3022 with no preamplifier will give you a net NM (noise margin) of 15.1 dB (A decent fade margin).
18.1 dB NM (in the air) + 10 dBd Antenna Gain - 7 dB distribution loss (a 2-way splitter and 50' of RG-6) - 6 dB tuner NF (noise figure) = 15.1 dB Net NM
The HD9095P combined with an Winegard AP8700 preamplifier would likely add reception of KCDN, a Daystar affiliate. The calculated Net NM comes out at 13.2 dB. A Net NM of 10 dB or greater makes comfortable telling you that you could expect reliable reception.

I've not factored any building or foliage penetration loss into these calculations. That means that if you have trees to contend with or want to do this from an attic... you have a reason to go with a bigger antenna. The Antennas Direct 91XG and Winegard HD9095 are "bigger antennas".

If you want to maximize your fade margin and possibly add one or more stations, I'd go with a 'large' UHF and an Antennas Direct CPA-19 preamp which has a better noise figure compared to the Winegard AP8700.
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Last edited by GroundUrMast; 12-Jul-2012 at 11:16 PM. Reason: corrected preamp make & model, offered 'large' option
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