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Old 28-Mar-2019, 3:35 PM   #1
Mike4565
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Join Date: Mar 2014
Posts: 12
Need help in Denver

(this is the second time I've submitted this post; the first hasn't appeared)

Here in Denver all the major stations have their transmitters on a mountain west of the city, just 16 miles from us. We get great reception for all but two of these stations, KCNC 4.1 and KDVR 31.1, despite their transmitters being located near the others. Oddly, however, they are the ONLY two stations we can receive with a cheap, flat, indoor antenna; why are they the only two we can't get with the outdoor antenna, a Winegard 7694P recommended here? It's mounted at least 25 high and pointed toward the transmitters; we have just two TVs and no amplifiers. We have run the channel set-up on both TVs several times. Here's our signal report:

http://www.tvfool.com/?option=com_wr...90383df73b2a07

Thanks for any help...
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Old 28-Mar-2019, 6:31 PM   #2
JoeAZ
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Join Date: Mar 2017
Posts: 380
Mike,
There could be any number of issues at play.
The outdoor antenna could be overloading the tuners
on KCNC and KDVR. This could cause the issues you
are having. Did you "walk" the outdoor antenna on
your roof before deciding where to mount? TV and radio
signals often take different paths even when the transmitters
are emanating from the same point. I would try re-positioning
the outdoor antenna. Try moving up/down on the mast, try
pointing a bit north/south of the transmitters. Remove the
antenna from the mast and "walk" the roof with the antenna
in hand. Someone will need to be watching your tv/signal
meter. Are there trees between you and the transmitters?
You may need to go above the tree line. The Winegard 7694P
IS a good antenna and a good choice for your area.
I'm certain others will come up with many other possible issues
for you to address. Good Luck!
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Old 28-Mar-2019, 7:15 PM   #3
Tower Guy
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Join Date: Dec 2009
Location: Delmar, NY
Posts: 1,164
I vote for tuner overload. The solution is to attenuate the signal. Here is one supplier with them in stock. You may need as much as 9 dB attenuation, so buy three 3 dB attenuators and use as many as you need.

https://m.markertek.com/category/rf-attenuators#ath
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Old 28-Mar-2019, 8:40 PM   #4
jrgagne99
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Quote:
Originally Posted by Tower Guy View Post
I vote for tuner overload. The solution is to attenuate the signal. Here is one supplier with them in stock. You may need as much as 9 dB attenuation, so buy three 3 dB attenuators and use as many as you need.

https://m.markertek.com/category/rf-attenuators#ath
He could just try aiming the antenna off target first, instead of buying attenuators.
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Old 29-Mar-2019, 2:19 PM   #5
Mike4565
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Join Date: Mar 2014
Posts: 12
Thanks for the suggestions; we are limited to exactly one place where an outdoor antenna can be mounted (on the chimney) but it can be raised or lowered a bit, and turned. I'll try repointing the antenna first. If attenuators are needed, are they placed (in series) in the incoming cable upstream from the splitter?
Mike

Last edited by Mike4565; 29-Mar-2019 at 2:28 PM.
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Old 29-Mar-2019, 6:21 PM   #6
Tower Guy
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Location: Delmar, NY
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Quote:
Originally Posted by Mike4565 View Post
Thanks. If attenuators are needed, are they placed (in series) in the incoming cable upstream from the splitter?
Mike
Thatís correct. Be careful about reaiming the antenna. Yes the signal strength will go down, but the multipath will go up. The results might be confusing.
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