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RF Modulator Hookups
The DVD player is a high
performance unit designed to be used in a variety of setups.
It has a plentiful variety of video output (composite,
S-video, Component) and audio output (analog, digital optical,
and digital coaxial) capabilities. However, there is one thing
manufacturers didn't account for: the increasing demand for
DVD players to be able to connect to a standard cable or antenna
input on older (1970s, 1980s) or entry level TVs (13 inch
models from 1990s) which do not have RCA audio/video input
Do yo ingle connection option, the
coaxial cable input jack on your TV?
If you have tried to connect
your DVD player into your VCR and then use the VCR to pass the
signal to your TV, but have experienced very poor picture
quality in doing this, the reason is that a DVD player cannot be
connected to a TV in this fashion due to the fact that DVDs
are encoded with anti-copy technology that interferes with the
VCR's circuitry. That is why you cannot make a copy of a DVD
onto a VCR tape successfully without using external electronic
gear. However, in most cases, this also prevents you
from using the VCR as a "conduit" to pass a DVD signal through
to the TV.
Using An RF Modulator
So, what is a person to do? Many people have their antenna
or cable connected to the VCR and, from there, the VCR is
connected to their TV. However, how can you connect a DVD
player to your TV, if your TV doesn't have A/V inputs that are
compatible with the DVD player? Secondly, how can you connect
both your VCR and DVD player to your TV at the same time if your
TV only has one cable or antenna input?
The answer to the above questions is a little box
that has been around for years called an RF modulator (Radio
Frequency Modulator). The function of an RF modulator is
simple. The RF modulator converts the video (and/or audio)
output of a DVD player (or camcorder or video game) into a
channel 3 or 4 signal that is compatible with a TV's cable or
There are many RF modulators available, but all function in
a similar fashion. The main feature of an RF modulator is the capacity for
it to accept the standard audio/video outputs of a DVD player
and the cable TV input (even passed through a VCR)
simultaneously. The RF modulator box typically uses AC power,
so you will need an outlet.
Setting up your RF modulator
First, plug your cable TV/VCR output into the cable input
connection (ANT IN) of the RF modulator and then the DVD player's
3 RCA A/V cables (yellow, red, white) into the RF
modulator's A/V inputs (yellow, red, white).
Second, connect a standard RF coax cable from the RF modulator
OUT (TO TV) to
your TV antenna/VHF IN jack.
Third, select either channel 3 or 4 output on the back
of the RF modulator. This is a two position switch.
Fourth, turn the TV on and the RF modulator will
automatically detect your cable input for the TV. When you
want to watch your DVD player, just put the TV on channel 3 or
4, whichever one you selected on the RF mod box, turn the DVD
player on and the RF modulator will automatically
detect the DVD player and will display your movie.
Although there are minor differences in brands of RF
modulators, the set up is basically as outline above.
In addition, if you don't have a stereo system you can also
hookup the DVD player's stereo outputs to the RF modulator as
well, obviously you won't get the benefits of surround sound,
but you will hear the audio through the TV's speakers. Also,
you won't get the full benefits of a DVD quality picture as
the conversion from video to RF (cable) downgrades the
resolution, however, as you switch between your VCR and DVD
you will notice the quality of the DVD image is still superior
than anything you probably have viewed on your TV.
RF Modulator / Video Switch boxes: You can also get an RF modulator box which allows multiple
inputs. Some will even automatically switch to whichever
device is "active" or powered on. This way you can
hookup game consoles and DVD players etc. without unplugging
cables every time.
Device Switchable Audio/ Video RF Modulator -
Connect up to 4 devices such as DVD Player, VCR, Video Game
Systems, etc. and view them on any TV on channel 3 or 4.
Allows you to watch DVD and Camcorder movies on TVs without
audio/video input jacks. Just connect your DVD player or
camcorder to the box and tune your TV to channel 3 or 4. Three
device connections on back plus
1 convenient front panel device connection. Includes plug-in
AC power supply.
Stereo A/V and selectable to channel 3 or 4 output
Front panel push button switching
Separate VHF antenna/cable input simplifies installation and
RF Output Channels: 3 or 4
RF Output Impedance: 75 ohms
Video Input Impedance: 75 ohms
Audio Input Impedance: 13 ± 3Kohms
Upgrades older TVs for use with newer Audio/Video components.
Front input for convenient camcorder or video game connection.
Automatically switches between video source and
Multiple Video Sources on Any TV
RF Modulators allow video components such as DVD
players, video game systems, VCRs and camcorders to be viewed
on televisions that are not equipped with an available
audio/video jack. RF Modulators are the ideal way to
connect multiple components to any television, making it easy
for everyone in the family to enjoy their favorite movies,
video games and other video sources anytime.
Just connect your source components and select channel 3 or 4
as the output. There is no longer a need to move components
around and disconnect and reconnect wires.
for picture of cable connections.
hookup diagrams below.
Connection hookup View Diagrams
Index - see over 100 hookup diagrams
RF modulator boxes are available at electronics and major
retail stores or online for around $20.
- Converts up to four Audio/Video source
inputs (DVD, VCR, Camcorders, video
game systems, etc.) to VHF for viewing on
- Switchable between video sources and cable
- Stereo A/V and selectable to channel 3 or
- Front panel push button switching
- Eliminates the need for extra monitors
- Separate VHF antenna/cable input
simplifies installation and switching of
- UL listed, FCC approved
- 1 year warranty
Switch boxes Video and Audio
HDMI Switch boxes
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