Question about Sony FD Trinitron WEGA KV-27FS100 27" TV

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Reception of vhf/uhf channels

I can receive channels up to 13, but i do not get reception for channels above that (i have a combination VHF/UHF antenna connected to the back of the television). How can I receive these higher UHF channels? Hi, I can get uhf channels 38 and 56, but uhf channel 25 comes in as 'no signal'. This just happenned recently, and we don't understand why. The menu is set to 'cable off' (we have an antenna instead). We have re-run the autoprogram and 25 is skipped over. We have also tried to manually add the station. BTW, it is a SONY WEGA 27". We bought it used, and haven't had a problem, except for this. Thanks for any help you can give.

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  • mccullog001 Dec 13, 2008

    Up until recently, I was able to get UHF channel 25, now I can't. I can get other UHF channels 56 and 38, etc. Channel 25 comes in as 'no signal'. We are using an antenna instead of cable, and the appropriate switches on the menu are set (ie. - cable off, etc.). We autoprogrammed several times and 25 is skipped over. We tried to manually enter it.

    If the problem is with the tuner card, does that mean it has to be replaced? Is that expensive? Is this something we can do ourselves? Thanks for any help you can give.

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Hmm looks like a problem because you already scanned the channels and still cant find them..
Go to thi website that will give you all the information about VHF and UHF reflectors and compare prices for you... http://www.starkelectronic.com/quantum.htm

Posted on Dec 13, 2008

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If you are able to received the other UHF channels, it could be that channel 25 might no longer be available or has switched to digital.

Posted on Dec 13, 2008

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This seem issue with the tuner card. also check if you can play dvd.

Posted on Dec 13, 2008

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Hello there,

initially when you have done the auto program on the unit, and it skip the channel. it means that there was no reception or no signal was recieve on the highest channel.

it is better to re align or re direct again the antenna in which it will get a high signal or reception.

let me know

Posted on Dec 13, 2008

  • micromaster
    micromaster Dec 13, 2008

    THIS IS AN ARTICLE RELATED TO HAVE A BETTER / GOOD UHF RECEPTION;

    If UHF reception in general is bad, how it's bad can help
    determine the problem. "Snow" is visual noise caused by a weak
    signal. poor antenna system, the set itself, or a combination of these. "Ghosts" or
    multiple images are caused by a signal arriving from two or more directions
    simultaneously reflected off buildings, trees and mountains. A good antenna
    system often solves these reception problems. An outdoor antenna is better
    than an indoor antenna. An indoor antenna is better than no antenna at all.
    If an outdoor antenna is needed for VHF, you'll almost certainly need an
    outdoor antenna for UHF. But if good VHF reception can be obtained with
    and indoor antenna, a loop or other UHF antenna on the set may also work.


    Outdoor Antennas
    There are many different kinds of outdoor antennas available
    in a wide price range. The kind selected is determined primarily by the
    geographic location of the receiver.

    Recommended UHF antennas


    • Four-way bow tie (pictured below) for metropolitan areas with strong signal

    • Eight-way bow tie for suburban areas with medium signal

    Television signals are strongest when the station transmitting
    tower and the home receiving antenna are in line-of-sight. If the line-of-sight
    is blocked or weakened by mountains, buildings or trees, the signal, likewise
    will be weakened or lost. The signal will also grow weaker as it travels
    farther.

    "Gain" is the measure of an antenna's sensitivity -
    and its ability to pick up signals. It is measured in decibels (dB).
    The farther away from the station tower, the more gain the antenna should
    have.
    Gain can also vary from channel to channel. For example, an antenna's
    advertised gain rating may be at Channel 20, but the gain may be much
    less at Channel
    69. Make sure the dealer guarantees that the antenna purchased is for
    channels in your area.

    Where buildings or other obstructions cause "ghosts," an
    antenna with good directivity is recommended. Directivity is the ability
    to receive only those signals at which an antenna is pointed. Highly directive
    antennas have narrow receiving angles (measured to degrees) and high "front
    to back ratios." To insure the best reception aim the antenna carefully.


    If a good VHF antenna installation is already on hand, it
    will probably be less expensive to add a good quality UHF antenna on the
    same mounting mast, The separate UHF antenna also will permit pointing to
    VHF and UHF antennas independently.

    If all television signals are coming from the same direction,
    both VHF and UHF reception can be improved. Choose an antenna according
    to the distance to the most distant UHF station for which reception is desired
    by installing an all-channel combination antenna. Combining both antennas
    in a single mechanical structure imposes design problems which make the
    selection of a well-engineered antenna very important.

    There
    are several good combination VHF/UHF antennas available. One of the best
    types combine a "log periodic" VHF antenna with
    a "yagi" (pictured at right) UHF antenna on a single horizontal
    boom. If the UHF stations to be received are located in different directions
    from the house (more
    than 30 degrees apart):



    • Either use separate antennas with a mixer or a switch (get professional
      help for this kind of installation.)

    • Or use an antenna rotator with remote control. The rotator is ideal
      when signals come from many directions.



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I can't get FOX on my converter box--what is the channel # for FOX?


It could be your antenna. Some retailers sold consumers UHF-only outdoor antennas and not VHF/UHF combo antennas. Other outdoor antennas may not have a power boost included for the VHF antennas (rabbit ears). The new DTV signals from stations are now broadcasting in lower power signals than before June 12.

Outdoor Antenna


KMSP/FOX 9 and KARE 11 both broadcast on VHF signals. WCCO and KSTP broadcast on UHF signals. You will need a VHF/UHF outdoor antenna to pick up KMSP and KARE 11 and also get all the other channels.

Indoor Antenna


Check your antenna to make sure it's a UHF/VHF antenna. You may need an indoor antenna that has rabbit ears -- that is the best way to get KMSP/FOX 9 reception on your TV. Your antenna should have a power boost to amplify the VHF signal if you are having trouble getting FOX 9 or KARE 11.

What Antenna Is Right For You?

Need help locating the proper outdoor antenna to receive your local television broadcast channels? Based on geographical maps and signal strengths, AntennaWeb.org locates the best antenna for you, whether it's a home satellite system, high-definition television (HDTV) or a traditional analog set.

Make sure you antenna is pointed toward Shoreview, where FOX 9 transmits from.

CALL FOX 9 FOR HELP: 952-944-9999

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1 Answer

Since the digital switchover, I have lost channels, despite re running the setup and tuning. Any suggestions as to why this is happening?


I have a similar issue. When the digital switch happened here some of the local TV stations changed frequencies from UHF to VHF. I do not have a VHF antenna so I am unable to receive these channels. I do have a great UHF antenna, but it will not receive VHF. The fix is of course is a new UHF/VHF antenna. I am 50 miles away from the TV transmitters.

This may or may not be your problem. I hope this is helpful to you.

Bob

Nov 08, 2009 | JVC LT42P789 42 in. LCD TV

1 Answer

I get no stations on my tv


Use an Antenna that Provides Good Reception of All Channels
  • Most existing antennas used by consumers will provide good reception of DTV signals. (Before making any changes, try your existing antenna first to see of it allows you to receive all the stations you normally watch.)
  • For watching DTV signals, you will need an antenna that provides good reception of both VHF signals (channels 2-13) and UHF signals (channels 14-51) to reliably receive all of the digital signals broadcast in your area.
  • Many antennas are designed only for reception of either VHF or UHF signals (but not both). For example, the commonly used “rabbit ears” indoor antenna is only suitable for receiving VHF signals. To receive UHF signals, an indoor antenna should also include a wire loop or other feature for reception in that band.
  • The reception capabilities of TV antennas also vary considerably, so be sure to talk to retail consultants and look at information on the packaging and/or the Internet to make sure that any new antenna you may choose provides good reception of both VHF and UHF channels. In addition, if you use an indoor antenna and receive signals on VHF channels, you may need to use an antenna with amplification.
  • Many antennas currently being sold as “HDTV Antennas,” perform best at receiving UHF signals; some of these models state that they provide reception of signals on channels 7-13 but actually perform less well receiving those channels. If you obtain one of these antennas, be sure it provides good reception of all the VHF channels as well as the UHF channels.
  • To check for the DTV signals that are available at your location, use the DTV Reception Maps available at www.fcc.gov/mb/engineering/maps.
Check Your Connections
  • Check that your digital-to-analog converter box or digital television is connected properly. Make sure your antenna is connected to the antenna input of your digital-to-analog converter box or digital television. If using a digital-to-analog converter box, also ensure that the antenna output of your converter box is connected to the antenna input of your analog TV. Refer to the owner’s manuals of your components if you are unsure of the proper connections.
  • Ensure that your components are plugged in and have their power turned on.
  • If you have a digital-to-analog converter box, tune your analog TV to channel 3. You should see a set-up menu or picture displayed on your TV screen. If you do not see a set-up menu or picture, tune your TV to channel 4. If you still do not see a set-up menu or picture, recheck your connections.
Perform a Channel Scan
  • Digital-to-analog converter boxes and digital televisions have a button, usually on the remote control, that is labeled “set-up” or “menu” or some similar term. Press that button to access the set-up menu. Using the directional arrow buttons on your remote, scroll to the option that allows you to perform a “channel scan.” The channel scan will automatically search for digital broadcast channels that are available in your area. Consult the owner’s manual of your digital-to-analog converter box or digital television for detailed instructions on how to perform a channel scan for your device.
  • Once the channel scan is complete, you will be able to tune to the digital channels received by your antenna. You should perform a channel scan periodically to check whether additional digital channels have become available.
Adjust Your Antenna
  • Small adjustments to your antenna can make a big difference in the number of digital channels you can receive. If you have an indoor antenna, try elevating it and moving it closer to an exterior wall of your home. After adjusting your antenna, perform another channel scan to see if your reception is improved.
  • While adjusting your antenna, it may be helpful to access the “signal strength meter” on your digital-to-analog converter box or digital television to determine whether your adjustments are improving the signals’ strength. The signal strength meter is usually accessed through the menu feature on your remote control. Refer to the owner’s manual of your device for detailed instructions on how to access its signal strength meter. Remember to do another channel scan after you have adjusted your antenna.
  • Television stations broadcasting in digital use both the VHF band (channels 2-13) and UHF band (channels 14-51). Many indoor antennas use “rabbit ears” for the VHF band and a “loop” or “bow-tie” antenna for the UHF band. Make sure you are using an antenna that covers both the VHF and UHF bands and have connected it properly.
If You are Still Having Difficulty:
  • Until June 12, 2009, some stations will be operating at reduced power levels. If you are not receiving certain digital TV stations, this does not necessarily mean there is a problem with your antenna or digital-to-analog converter box or digital television. Check with the TV station to find out whether they are planning changes that will improve reception.
  • When an analog TV signal is weak or receives interference, static, snow, and distortion will often appear on the screen. Digital broadcasting will provide a clear picture; however, if the signal falls below a certain minimum strength, the picture can disappear. This “cliff effect” means that if you watch analog TV stations that have static and distortion, you may have to adjust or upgrade your antenna system.
  • Simple indoor antennas provide minimal performance that may not be suitable for your location. If you are unable to obtain satisfactory DTV reception with your current indoor antenna, you may wish to obtain an indoor antenna that includes features for better reception of UHF signals, as well as VHF, and/or an amplifier to boost the received signal (often referred to as an active indoor antenna).
  • Generally, an outdoor antenna will get better reception than an indoor antenna. However, the performance of outdoor antennas can degrade over time due to exposure to the weather. If you are having problems, check for loose or corroded wiring, broken antenna elements and that the antenna is pointed in the right direction.
  • Try to keep the length of wire between your antenna and digital-to-analog converter box or digital television as short as possible for best reception.
  • “Splitters” that are used to connect a single antenna to multiple digital-to-analog converter boxes or digital televisions reduce the amount of signal available to each device. If you are having problems, check whether reception is improved without the splitter. In some cases an “active” splitter that includes an amplifier can solve the problem.
  • If you are near a station’s broadcast tower, reception of that station, as well as other stations, can be impeded by strong signal “overload.” Consider using an “attenuator” or removing amplifiers to improve your reception.
  • If you decide to replace or upgrade your indoor or outdoor antenna, many types are available from electronics retail stores at a variety of prices. Websites such as www.antennaweb.org provide information on the locations of broadcast towers and the types of outdoor antennas appropriate for the stations you wish to receive. If you need assistance with upgrading your antenna system, check with a local antenna retailer or antenna installer.
  • To check for the DTV signals that are available at your location, use the DTV Reception Maps available at www.fcc.gov/mb/engineering/maps.
Hope it may helps:

Regards:
VOTIT

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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

1 Answer

Conversion boxes-Do I need one with an outside atenna?


you will need a converter box if you do not have a digital ready television. If you have a digital television, then no you do not need one. make sure of the type antenna you have, as there are uhf only and vhf only and combined uhf/vhf. if you only have a uhf only antenna you may be missing out on channels.

Jan 23, 2009 | Televison & Video

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!
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Sorry, looking up the Phillips PTV100, it does not support over the air broadcasting. Supports, cable and satellite reception.

The reason you are picking up The VHF channels (2-13) is they match cable channel frequencies up to this point. The UHF frequencies are not the same as the cable frequencies, even though the channel numbers seem the same.

Some other models or brands of TIVO may have this ability.

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RCA VCR VMT 385A support needed


c is cable
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1 Answer

Reception of vhf/uhf channels


You did not mention which set you have, so look for a small switch (usually on the back of the set) or go into the menu and set the TV to the "broadcast" or "tv" mode. If the set is in the "cable" mode, you will not get any UHF channels above 13.

Sep 01, 2007 | Televison & Video

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