Anybody can shed some light on the following?
CW, PBS and Fox are at the same distance (64 miles) and same azimuth (161 magnetic) from my location. I get CW and PBS and about 40-50 signal strength with a max of 60 (out of 100). However, Fox doesn't get through at all. Signal Noise Margin is 19.2 (CW), 10.2 (PBS) and 8.5 (Fox). There is not much difference between PBS and Fox in NM, and I can get one but not the other.
At the same time, I get ABC at the same azimuth (161 magnetic) at 95 miles away with a NM of 6.6!
And NBC at 171 magnetic and 92 miles away with a NM of 5.5.
How can this be explained? Do I need a more powerful preamp? I calculated my losses at 17 db (3 db preamp, 6 db 100 ft coax cable, 8 db 4 way splitter), reason I opted for a 19 db gain preamp. Does the built-in TV tuner introduce signal loss too? Should I go with Winegard AP-8275 / 4800 (28 db gain)?
TV Fool Analysis Results
http://www.tvfool.com/?option=com_wr...03d944daf69fe2
Antenna Setup: Antennas Direct DB8, Winegard AP-8700 Preamp, approx 80 ft RG6 coax cable to the 4-way splitter, Sony Bravia with built-in tuner