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As a result of the conversion to digital TV, our 7" digital TV with internal antenna does not receive all local channels. I know that the designers of the conversion did not adequately consider issues pertaining to TVs with internal anntennae. Is there something we can do to improve reception, short of putting the set on cable?

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  • shel030351 Aug 04, 2009

    Not necessary, bestdarngood. It turns out that the settings on the TV simply needed to be reset to receive the signal. My daughter's 14 year old friend more or less showed my wife how to do it, and through trial and error (randomly pushing buttons) my wife eventually got reception on all three broadcast networks.



    By "internal antenna" I meant an antenna inside the house, not the TV -- so we are already using the equivalent of bunny ears although it is a single "eared" antenna.



    Nice try, but no cigar.

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Buy an external antenna or if you have one then start using it. Buy some coaxial cable, install the antenna and wire the antenna to the tv and it will boost the receiving signal and you should be able to receive better reception and get more channels. Even bunny ears might help though I would go with an outdoor antenna. Someone you know may not need theirs anymore or you may be able to find a cheap one from a local shop. Let me know how this turns out.



Benjamin

Posted on Jul 26, 2009

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What does RF CH mean?


What is the difference between a RF channel and a virtual channel? The RF channel is the channel that the TV station uses to broadcast its signal. Before the conversion to digital, TV stations were normally identified by their channel number, and most people knew that a particular network was on a specific TV channel. While analog broadcasting was being phased out and all TV stations were converting to digital broadcasting, it was necessary for the TV stations to continue to broadcast their analog signals on their original RF channels, and also broadcast their digital signals on a different RF channel. However, since the TV station used their broadcast channel as part of their identification, they wanted to keep using the same channel number. To allow this to happen, the new digital television broadcasting standards (ATSC) provided TV stations the ability to continue to use their original channel number and also tell the TV set to tune to the new RF broadcast channel when their virtual channel number was selected. The original channel number is called the virtual channel number, and it will be followed by a period and a second number (3.1, 7.1, etc.).
One of the benefits of converting to digital for the TV stations is that they now have the ability to transmit more than one program at the same time on the same RF channel. The number of additional channels they can broadcast is determined by the resolution of the program (SD vs. HD, text only, music only, etc.). The second number in their virtual channel number indicates that one of the additional programming sources from the same TV station is being viewed (10.2, 10.3, 10.4, etc.).
When selecting an antenna, it is important to understand the difference between the RF broadcast channel and the virtual channel. Antennas are designed to receive specific ranges of RF channels, and the antenna needs to be selected for the RF channel you wish to receive. TV stations broadcast in two broad frequency ranges, called VHF and UHF. RF channels 2 through 13 are considered VHF, and RF channels 14 through 51 are considered UHF. In order to pick up the channels, the antenna has to be designed for the correct frequency range. It is very common today to find that TV stations using virtual channels 2 through 13 are actually using RF broadcast channels in the UHF range. Although not as common, some TV stations using virtual channels 14 through 51 are actually transmitting in the VHF range. An antenna designed for only UHF channels will not work effectively for RF broadcast channels in the VHF range, and an antenna designed for only VHF channels will not work effectively for RF broadcast channels in the UHF range.

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1 Answer

How do i get tv channels on my android tv box


In many cases these devices are not designed to pick up local tv stations. Instead they are designed to allow streaming of your movies and music from your computers or other network attached devices.
To get local stations you will need to ensure your tv is digital compatible (any tv made in the last few years will be) and then use the channel scan feature of your tv.
You may also need an additional external digital antenna to receive digital channels
Your android device can be used with an internet connection to watch youtube, amazon, (netflix on some devices) crackle, etc. These are internet services which usually can't be broadcast to a TV. So these boxes act in a similar way as the cable converter boxes of the 80-90's did.

Hope this helps you, feel free to ask further if needed.

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But the antenna u bought it is a digital antenna design though.Digital antenna design will help ur tv to getting broadcasting signals channels stronger and longer signals ranges though.

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We are in Ghana we need frequency and we update to get more channel


Your flat panel TV is probably factory set to receive ATSC signals (Hi-def DIGITAL TV), whereas
Ghana may not have converted from analog TV (NTSC) yet.

Digital TV's cannot receive analog signals. I'm just guessing about whether or not Ghana supports
Hi-Def broadcasts - you'll have to check with (any) TV channel in Ghana. The Analog-to-digital
conversion is an expensive one at the broadcast end, and may not have happened yet in Ghana.

The US conversion took place by FCC mandate June 12, 2009.
There are available $65 (USD) digital-to-analog converters, but what you may need is an
analog-to-digital converter, which doesn't exist. Your Flat-panel TV amy have to wait until Ghana
begins broadcasting a Hi-Def TV channel.

For a HD antenna, a regular old rabbit ear-type antenna will do.

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Do i need just an antenna or one of those digital converter boxes to get just local channels in Denver on this TV?


If your TV was made after 2007 it should have the digital receiver built in. If so you can just hook any antenna you wish up and receive all your local channels.

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8 11 & 14 are std definition. All digital channels are 1.1, 1.2, 1.3, etc. You may need to re-align your antenna. Digital is Very Very direct, analog was very scattered. Hope this helps

Jul 08, 2009 | Samsung DTB-H260F

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Can you tell me if i still need a box if i only want local channells.? I have purchased an atena but still can't figure out how t program. tv CCVG-1935W


You still need the converter box since all broadcasts are in digital format and they are not compatible with your standard TV without the conversion.

Jul 07, 2009 | Televison & Video

1 Answer

When i am scanning for digital reception of local channels i can receive a few. there are other channels that i caught before the big switch that i cannot catch now and it says they are locked. how can i...


You may need a better antenna. The sign maybe so weak that the TV locks the channel out.
These pictures are new digital antennas.
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It's the best way I know of to solve the problem.

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1 Answer

NO HDTV


There are many variables here that could cause the problem. I can receive a few local HD channels ( within about 60 miles ) on my 57H94. I am not aware of any "HD specific" settings- it's all part of the receiving circuits in the TV. The first thing I would look at is to be sure you have a secure antenna connection. Then be sure you have selected the correct antenna input on the TV (there are two). HD channels, as an example will show up as 10-1, 10-2, etc. Most TVs have different sensitivity thresholds, regardless of size. Usually digital signals, including HD, are either there or not. In most cases if a TV picks up a decent analogue signal, a digital set should receive the digital signal, including available HD channels, as well. If you are going to use an antenna, rather than cable or satellite, try to get the best antenna you can afford, that will meet your physical requirements ( indoor / outdoor,etc.). Keep in mind that not all digital TV signal are HD. All of our local stations in this area transmit a digital signal, but true HD broadcasts remain variable. I hope this has helped in some way-Good Luck!

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