Question about Samsung LT-P1545 15 in. EDTV-Ready LCD Television

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Channel select Can recieve all VHF channels but no UHF channels.

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Are you on "air" mode not "cable"

Posted on Mar 06, 2009

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Posted on Jan 02, 2017

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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.

Apr 09, 2015 | Televison & Video

2 Answers

Will not find digital tv stations


Hi,

I'll be glad to assist you in locating the digital channels in the TV.
Make sure that the Cable or Antenna Input is connected to the TV. The Cable and Antenna input can be connected to the VHF/UHF Input on the TV. The TV can search for the channels only if the VHF/UHF/CABLE input is connected to the TV. If you're connecting the Cable box or the Satellite Receiver to the Video or HDMI inputs on the TV, then it is not require to auto program the TV. Here, the auto program may be required in the cable box.
To Auto Program the TV, select the Manual Channel Search option from the Menu option and then select the CABLE, AIR or Digital Add-On option depends on the connection. The Digital Add-On option adds any new digital channels that are found to the Channel Scan Database.
This should resolve the issue. Please feel free to get back to us for further assistance.
Thanks for contacting FixYa.

Aug 04, 2011 | Sanyo DP46848 LCD TV

1 Answer

I live in Victoria Tx. I can not afford cable or dish. I am able to recieve all 4 of the the number 25 channels. Why am I not able to recieve any of the three number 19 channes. All 19 and 25...


Channel 19 actually broadcasts on VHF channel 11 (approximately 201MHZ) and channel 25 actually broadcasts on UHF channel 15 (approximately 479MHZ). I know that sounds a bit weird but it has been done so that stations don't have to change there "call" channel number when we switched to Digital TV. Your digital converter box keeps track of this. This is important to understand because you need and antenna that is good at picking up both UHF and VHF signals. If you're not getting channel 19 it may be due to a poor VHF portion of your antenna. If your using a basic old set of rabbit ears for your antenna that has a loop in the middle then I might have a trick for you. Most rabbit ears have 2 telescopic antenna elements. Extend or collapse until each length is 14.7 inches long. (Which is a quarter wavelength at 201MHZ). You are effectively tuning (Optimizing) your antenna specifically for that channel 19. You may need to rotate your antenna a bit to find the best signal.

There are other factors which can hinder you receiving channel 19 but this is a good starting point. Let me know what type of antenna you have. Hope this helps.

Dec 03, 2010 | Insignia Digital-to-Analog Converter for...

1 Answer

VHF channels come in however UHF channels are not


uhf and vhf tuning is performed in one board(tuner brd) there are some on line part stores that can help you with the number and price, you'll need to provide the model number. partstore.com is one of them, but there are more.good luck.

Jan 09, 2010 | Vizio GV46L 46 in. LCD Television

1 Answer

I just bought a 19av615db, located in Ireland. how do I set up? Not connecting it to sky or anything,just want to get local channels for now?


If you are in Nothern Ireland you will need a UHF antenna, and Republic Ireland you will need VHF and UHF antenna to recieve off the air signals.
Connect the antenna to the back of the TV. Turn the TV on, select "menu" button on your remote and slect TV from TV/Cable menu press enter, go to main menu and select channel set up menu and select auto channel button and when finished press menu button, check your user manual for details.

Jan 03, 2010 | Toshiba 19A25 19" TV

1 Answer

Local channel went digital, lost signal.


You need a digital to analog convertor box to recieve the digital signal.

All UHF+VHF signals will be digital starting in June.

Thanks for using FixYa - a FixYa rating is appreciated.

Feb 20, 2009 | Televison & Video

1 Answer

Making the TV VHF plus UHF cable ready


If your tv tuner on vhf only goes to channel 13 you will not recieve uhf channels if you are hooked to cable tv. You can do a search for mid band to uhf converters (converts uhf to vhf).We used to use them in the early 80's. Even if you can find one it will only go to channel 22.

Jan 27, 2009 | Curtis RT700 7 in. Portable Television

2 Answers

Compatability


would a MU21CV be a VHF or UHF????

Aug 12, 2008 | Motorola MU21CV (1 Channel) 2-Way Radio

1 Answer

No uhf with antannae


UHF channels are basically "line of sight" type signals. You need to be pretty near those UHF stations.
You need a Uhf or combination Uhf/ Vhf antenna to receive them - - Usually an out-door type.
Your TV needs to be set in the "antenna" mode to tune beyond channel 13 "air type" channels. Channel 14 is the first UHF channel if you're in the antenna mode. If you're in the "Cable" mode then channel 14 is a cable channel which is operating at a different frequency from UHF.
I hope this will help you!
Stargazer

Mar 21, 2008 | Orion STV2763 27" TV

1 Answer

2-way radios


The Bellsouth 2231 is a FRS VHF I couldn´t find if thi Bell south 1007 is FRS in UHF or VHF if you have this informtion compair them if both are in the same band VHF or UHF both radios can communicate to each other

Mar 02, 2007 | BellSouth 1061 (14 Channels) 2-Way Radio

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