Question about Dynex 32 in. LCD Flat-Panel HDTV

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What is RF CH used for?

When I use channel search on my antenna in my motorhome on my Dnex 32 inch, I get a number in the RF CH selection as well as Analog, Digital etc. Whagt is the RF CH number used for?? Is it extra channels I get or do I use it for anything? James

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    David Burroughs Jun 22, 2017

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  • Dynex Master
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RF is used for Radio Frequency on your Qam tuner to break it down its the tuner like cheel 1-99 or 1-125 or digital RF clear Qam tuner so RF is your tuner respectivly. You would use this when you have a OTA over the air antenna or sraight cable meaning from wall outlet to tuner not wall outlet to cablebox.

I hope this clears up the meaning.

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Posted on Dec 12, 2009

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Both the ATSC and DVB-T specifications allow what are known as virtual channels, which are software-defined "channels" which correspond to a specific RF channel which carries the actual broadcast streams. These channels are assigned in the same way as they were in the old NTSC analog standard: there is a chart of these frequencies at
http://picodigital.com/_docs/_resources/Frequency-Charts.pdf

Posted on Jun 08, 2014

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1 Answer

How can i get local channels on my rca tru flat tv BD20TF10


The RCA BD20TF10 was manufactured before digital tuners (ATSC) were required. It only has an analog (NTSC) tuner so you will need a digital to analog converter box to watch most local channels. (These were the boxes available with the discount coupon as the ATSC broadcast transmitters were enabled.) Depending on the converter box model, use either the composite video input or use the RF antenna connection. If you use the RF output from the converter, you will need to set the TV to channel 3 or 4 (set the switch on the box to match). Then follow the directions for searching for channels with the converter box.

You may be able to find a low power analog station still broadcasting. However, you'd need to be close to the transmitter or have an antenna that is rated for a long-range signals. (Usually this will need to be an outdoor antenna with few obstructions between the transmitter and the antenna.) To scan for any available NTSC channels, make sure that the TV is set to TV mode. Then press Menu. Use the Up/Down arrows to highlight Channels and press OK. Select Auto Channel Search and press OK. You may need to confirm this step by highlighting the Start Search option and pressing OK. This will also let you add the appropriate channel for watching the signal from the converter box with the RF cable. The manual for this TV is available from Sears Parts Direct here: http://www.searspartsdirect.com/partsdirect/user-manuals/BD20TF10-Rca-Parts-Television-Parts-manual . The direct link to the manual is http://c.searspartsdirect.com/mmh/pd_download/lis_pdf/OWNM/L0312126.pdf .

I hope this helps. I'm not sure if the Menu feature is available from the front panel buttons. You may need a remote with a matching code to do the channel scan.

Cindy Wells

Sep 26, 2016 | RCA Televison & Video

1 Answer

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

1 Answer

How do I connect an analog antenna to a 32 inch sharp aquos tv? and do I need a specific input setting?


antennas are not analog or digital, just VHF, UHF and they typically connect to a RF coaxial jack on the TVs rear panel. 75ohm silver round jack. Select in your TVs menus, AIR when you want over-the-air TV stations and do a new channel scan to pick up local channels.

May 06, 2011 | Sharp Aquos LC-42D62U 42 in. LCD HDTV

1 Answer

How do I retune my Panasonic Viera TV?


Hello
To tune your Panasonic Plasma to on air TV channels do the following:

Connect the antenna connection to its antenna in at the back panel.

Automatically searches and adds available channels to the memory.

Select "ANT in"

Select Cable or Antenna Select "Auto"
Select a scanning mode

Auto channel setup
Select "Auto program"
Select "ANT in"
Select "Auto"
Select scanning mode (ALL channels/Analog only/Digital only

Start scanning the channels

Available channels (analog/digital) are automatically set.

All channels: Scans digital and analog channels

Analog only: Scans Analog channels only
Digital only: Scans Digital channels only
Confirm registered channels

If OK is not pressed after selecting "Apply", the channels will not be saved.

The channel will be saved when no operation is performed for 60 seconds and

the "Manual program" menu will also exit automatically.
If you perform scanning more than twice, previously saved channels are erased.

About broadcasting systems

Analog (NTSC): Conventional broadcasting

Digital (ATSC): New programming that allows you to view more channels
featuring high-quality video and sound
[Use "UP ' DOWN ' RIGHT ' LEFT] AND 'OK"] keys to selcet and proceed.

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1 Answer

I know this tv has digital capabilities, so i don't need to get the digital box, what do i need to watch my local channels? i have directv but does not include local channels (ie. fox, abc, nbc).


Hello


To tune the local channels do the following.

1 Press the MENU key on the remote control to
display the Main menu.

2 Use the CURSOR "UP" or "Down"
keys to highlight
Manual Channel Search. Press ENTER.

3 Use the CURSOR "Up" or "Down"
keys to select Cable,
Air (Antenna), or Digital Add-On.

After the search is complete, the HDTV will exit the
menu system and return to normal TV viewing.

IMPORTANT FACT: This HDTV maintains only one database

of digital channels. Therefore, when you search for

cable channels, the database of antenna digital channels

will be deleted. You will only be able to receive those
ClearQAM channels your cable company provides.

NOTE:"Not available" will appear on the screen

when an option is unavailable.

TUNING MODE UNAVAILABLE MENU OPTION(S)

Analog RF Digital Caption

Digital RF None (all Menu options available)

Video 1 Manual Channel Search, Channel Scan

Memory, Digital Caption

Video 2/3 and Manual Channel Search, Channel Scan
HDMI 1/2 Memory, Digital Caption, V-Guide
OK.

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1 Answer

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On your remote, select input as TV, then verfiy that you have set to Antenna, Then scan for channels.

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1 Answer

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Feb 28, 2009 | Sansui 27" TV

1 Answer

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1 Answer

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