Bad Reception

[magrau]

Hello everyone, I am new here and just started getting OTA tv programing for my locals. I have a problem during the day time I get like 10 channels with good reception, but at night I get like 64 channels with great reception, it seems that I loose signal during the day time. I was wondering if anyone else is experiencing this issue. I live in Central Florida.

[GroundUrMast]

It would help us greatly if you could use these analysis tools to create a report that reflects your actual antenna location (including elevation). When you have those, please post them. Please include the FM report as an aid to diagnosing possible interference.

http://www.tvfool.com/?option=com_wrapper&Itemid=90

http://www.fmfool.com/?option=com_wrapper&Itemid=29

Finally, can you describe what type antenna(s) are installed and where they are (set-top, attic, tower...), any amplifiers, combiners, splitters, etc.

[John Candle]

The structure is a , house , apt. , condo , town home , mobile home , motor home , how many floors above ground , Is the structure wrapped with any kind of metal like metal siding , stucko with stucko Wire , are the walls poured concrete , metal foil backed insulation , is the roof metal ? how many tv's will be connected ? . http://forum.tvfool.com/showthread.php?t=4

[magrau]

Thank you very much for your replies. Ok i have a one story one family house stuckle walls none metal roof my antenna is on a poll like 20 to 25 feet above ground this is my location ....
http://www.tvfool.com/?option=com_wr...81a3475a2d7472

and this is the type of antenna i am using .... HDTV Antenna with Motor Rotor, HD-2605

specs ....

Reception: VHF/UHF/FM
* Built-in Motor Rotor
* Dual TV Outputs
* Easy Installation
* High Sensitivity Reception
* Built-in Super Low Noise Amplifier
* Power Adpater and remote control included
* Coax cable included (4Ft x 1 and 40Ft x 1)

Frequency (VHF)
40 - 300MHz

Frequency (UHF)
470 -860MHz

Gain (VHF)
28 ~ 32dB

Gain (UHF)
32 ~ 36dB

Max Rotation
360 degrees

Power
3W

Impedance
75 ohm

DC input
15 ~ 19V

Demensions
22" x 30" x 4"

I am using two tv's with HD access boxes hope i answered everything. Thank you again for your support.

By the way I am getting 74 channels coming in and this mornig around 7:15 71 channels oppened right now is 9:55 and only like 10 channels are opening it stays like that all day until probably 7:30 pm when all the channels come back in.

[GroundUrMast]

Thanks for the update,

If this is your antenna (http://www.solidsignal.com/pview.asp...sku=9211411100), then I suspect that you may need to consider a different antenna.

Frankly, I am very skeptical of the HD2605 claim of "Range: Up to 125 miles*". If that antenna were mounted on top of a high mountain and had a clear line of site over flat desert terrain with no vegetation.... well maybe it could achieve that claimed range.

If you look at this antenna (http://www.solidsignal.com/pview.asp...0Antennas&sku=), you see almost double the number of elements (which is what directs and gathers the signal and yet the claimed range is a far more realistic "Up to 35 miles...".

Your report shows nearly all stations are fairly distant and 'over the edge'. You need a high performance antenna system to provide reliable reception.

I would choose a very high gain / highly directional antenna combination like this:

http://www.solidsignal.com/pview.asp...u=853748001910

http://www.solidsignal.com/pview.asp...u=615798304867

I would mount those on a rotor with at least 4' of distance between the antennas, and combine them using a UHF/VHF amplifier like the CM7777 (http://www.solidsignal.com/pview.asp...ku=02057207774)

The goal is to receive a clean stable signal before any amplifier is used. Amplifiers increase the level of both desired signals and noise. A weak, noisy, distorted signal is never fixed by an amplifier.

[GroundUrMast]

Based on your ZIP code, there are several local FM stations. Use of an FM trap ahead of any amplifier would be a good idea.

[magrau]

Thank you very much, GroundUrMast for your responce. I think you miss read when i mentioned that at night i get all of the 74 channels is not an antenna issue or am i mistaken I get perfect quality and perfect reception so i don't think is an antenna issue, another thing I don't think i need an FM trap what would that do for me? As I mentioned is only in the day time that i loose most of the channels. I was thinking maybe lowering my antenna a little would help? I don't know?

[GroundUrMast]

Based on the signal analysis for your location, my theory is that you are receiving a marginal quality signal at night. As the sun rises television signals experience more interference. Digital TV will look virtually perfect until the signal quality drops to the point were data errors occur. At that point the picture may pixel-ate, come and go or just quit completely.

FM stations near you can also be a source of interference to weak DTV signals.

If you are able to increase the height of your antenna, you can expect to get it little more signal strength... that might be enough to improve some of the signals lost during the day. I would expect that lowering the antenna would most likely make things worse.

Most tuners provide some sort of signal quality / 'strength' indication. If my theory is correct, I would expect that as you watch a channel that 'goes away' during the day, the signal will start to get worse some time around day break and will gradually get worse until the picture begins to breakup and finally quit... the signal indicator will in most cases still show some low or weak level.

Here in Seattle the transmitters are scattered in many directions. During the day I tend to loose one or two of the stations that my antenna is pointing away from. If I aim directly at those stations, I get a reliable signal.