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I scanned for channels and got 134 rf channels and 13 of the other , but will only show the 13

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Use antenna or air mode not cable

Posted on Apr 17, 2015

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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

1 Answer

On olevia tv, channel scan will not pick up channels 3 to 13


i think the low band on your tuner has failed

Nov 16, 2014 | Olevia 332V LCD TV

1 Answer

Tv channel scan


If you are using cable TV the channels could all be scrambled requiring a cable decoder box.

Dec 08, 2013 | Apex Digital Audio Players & Recorders

1 Answer

I'm trying to figure out how to connect an apex digital t.v. converter box to a hitachi clu-5722tsi television...how do I do this? please help!! picture is the back of the tv..but then I also don't know...


Most digital converters provide two types of output: an RF output that connects to the antenna input of your TV and left audio, right audio, and video outputs that connect to the corresponding inputs of your TV. The RF output connection produces a digital picture on channel 3 or 4 (selected by you at the converter) with your TV set to the appropriate channel. The L/R audio and video connection produces a better quality picture. Choose one or the other, but not both. The picture you provided shows three possible inputs for the L/R audio plus video arrangement.

Oct 19, 2013 | Televison & Video

1 Answer

When I run the auto scan the tv only locks in to rf channels. I am on cable connection. What can I do to get all channels?


Are you receiving the other cable channels? If so, then perhaps it's the RF cable connected to the TV. Sometimes they act more like an antenna than a direct connection.

Jun 03, 2010 | Televison & Video

1 Answer

Set top box installation


RF is the normal round coax cable in black.
Further you need to select your video channel on TV to watch the set top box RF signal. Usually you change the RF channel frequency also on these things. If you don't know channel number let TV scan it.

Apr 18, 2009 | Sagem PVR 6280 Freeview DTV Receiver /...

1 Answer

How come I can play video tapes on my sony video casette recorder, but can not record tv channels on my recorder?


i guess you havent connected it correctly.

Run your ariel int antenna (RF) in on the video recorder.

You will need another (RF) cable that connects from RF-out on the video recorder to antenna in on the tv.

put the tv onto channel AV (or video)

tune (scan) the TV channels on your video recorder.

NOW you will be able to record the channel you see it play on TV


hope this helps!

Apr 06, 2009 | Televison & Video

1 Answer

Programming panasonic vcr


First, check in the VCR setup and see if it set for cable or off-air/broadcast/antenna (not always named the same).  If it is set for off-air... then it won't tune cable channels beyond 13.  It must be set for cable mode in order to tune those upper channels (mid-band, superband etc.).

I assume you have the VCR hooked up correctly- cable into VCR antenna/RF input, VCR RF/to TV output to the RF/Ant input of the TV.

Oct 15, 2007 | Panasonic AG-1980 S-VHS VCR

1 Answer

Dont kno how to record


Connect your cable from the wall to the RF IN on the back of pd-dvr100
Connect your RF OUT on the back of your pd-dvr100 with a coaxial cable not included to the RF IN on your cable box
Connect the red, yellow, and white RCA Cable to the front or back of your TV
and to the audio out and video out on your pd-dvr100
Press the SETup button on your remote use the up and down buttons to select the channel scan sub menu
select IRC for your tuner input source
select scan and press Enter
The recorder can now record all scanned channels onto your dvd+r when you press the record button
I only got it to record the scanned channels.
The good thing is you can record on another station while you are watching a show on your cable box.

Aug 19, 2007 | Protron PD-DVR100 DVD Recorder

1 Answer

Not able to scan stations


I don't understand why you would bother to scan channel when you have directv or dishnetwork???
directv or Dishnetwork required their units in order to watch any channel,which means:
A. Depending on your TV setting,if you use RF connection from your basic directv to the tv,you would have to leave the TV on Ch.3 or Ch.4.to view the rest of the channels,you have to change it from the directv or dishnetwork box. You are NOT able to scan the rest of the channels from the TV,bottom line!!
If you have comcast or your local cable provider,once you have activated,you could use the RF signal coming out from the wall plate straight to the tv and go to TV auto programming,it will auto scan the available channels for you.
Don't waste your time on directv.
If you are thinking about recording from your BASIC directv or dishnetwork box, you would connect SAT. signal from the wall plate to the directv box,then use composite video/audio output and connect straight to your VCR/DVD player under composite video/audio input. Now you could record the viewing channel to the VHS.
Good luck!

Aug 19, 2007 | RCA DRC8335

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