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dead zone help?
I seem to be in a dead zone due to escarpment how do I overcome this without going higher that 25 feet http://www.tvfool.com/?option=com_wr...d2436d72a7708a
my setup is focus360 180D antenna 2x2' rg6 to combiner/splitter, 4' rg6 to CM7777 30db pre-amp, 50' rg6 to power inserter,10' rg6 to splitter split to 2 tvs,(1)20' rg6 to electronic master set-top box,(2)10' rg6 to viewsat 9000hd. my problem is I can't seem too get stable signal in the day and more so at night for channels (WNED)Pbs, (WUTV) Fox , Zuus ,(WNLO) CW 23.1, Bounce 23.2. At night time only, other channels come in and out (unstable) they are(WPXJ) Ion,(WIVB) CBS,(WROC)CBS,(WHUF) Fox. |
My guess is: your very strong local channels are causing IMD (intermodulation distortion) in your preamp that raises the noise floor from spurious signals generated in the preamp to wipe out your weaker signals, like WPXJ and WIVB which are 2Edge.
WROC and WHUF are very weak Tropo signals that will never be reliable because they are subject to the whims of tropospheric propagation. https://www.google.com/?gws_rd=ssl#q...ic+propagation What happens if you remove the preamp? You should be able to get the channels you want down to WUTV without the preamp. |
If I remove the CM7777 no AMP, I lose 3 locals 9(9.1),44(57.1),47(47.1),and WNED,WNLO,WUTV, and any extras at nighttime.
With a inline 10db amp I lose CFTO 9(9.1), WUTV, while WNED , WNLO and any extras at night are unstable (drop out and in). Was thinking about a CM distribution amp 16DB. |
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That doesn't make any sense to me with signals that strong, unless your tvfool report is way off. Are you aiming your antenna at those stations, or are you expecting to get signals from all directions no matter how you aim your antenna?
I must have missed something in my analysis. Maybe there is a problem with the equipment or wiring. A CM7777 is certain to overload from a -17.1 dBm signal. http://www.digitalhome.ca/forum/showthread.php?t=42426 Why don't you ask one of the DHC guys; they know more about your area than I do: http://www.digitalhome.ca/forum/forumdisplay.php?f=186 You also have some very strong FM signals: http://forum.tvfool.com/attachment.p...1&d=1412307736 |
I am aiming at 120 with one side and 100 with the other right now; but all tests were done pointing at 46* with one side and 120* with the other side. The FM trap is set on for the CM7777
I think the escarpment in my area is killing me and may have to go higher than 25 feet. Based on the signal output maps of the callsigns |
Your tvfool report puts you in Hamilton, just south of Windermere Basin and Industrial Sector H, by Burlington St E, near Burgess Ave and Leaside Rd.
Where is the escarpment? If you are at that location, then I'm stumped by your problem. Maybe someone else on this forum can figure it out. Better yet, go to DHC and ask roger1818 to help you; he's pretty sharp: http://www.digitalhome.ca/forum/forumdisplay.php?f=186 or http://www.digitalhome.ca/forum/showthread.php?t=36535 |
I see you didn't get much help at the DHC Hamilton thread, but it was worth a try. If roger had been there, you would have gotten a better answer.
http://www.digitalhome.ca/forum/show...36535&page=141 I thought about your problem a little more. Your reception results are not consistent with your tvfool report and your equipment. There seems to be a piece missing from the puzzle. The possible reasons for your poor reception: 1. Your tvfool report is wrong. 2. There is a problem with your equipment. 3. There is something in front of your antenna that is blocking the signals, like a thick stand of trees or a large building. Have you tried using a different antenna in place of your focus360 180D antenna, like a DB4e with a separate piece of known good coax and one tv? There might be a problem with your antenna. You could have a bad balun, combiner, or coax Quote:
Using an estimate of your location, I don't see much difference at 30 ft: http://www.tvfool.com/?option=com_wr...d24381e39cb06f |
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