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Television signals are transmitted on a high frequency (or RF) carrier signal. The technique of adding the signal to the carrier signal is called modulation. This happens for all radio transmissions.
A VCR that has a modulator allows the output signal to be turned into an RF signal. The signal is added to the RF signals that are fed into the VCR via the aerial feed. Although it is rarely needed today, older televisions often had no video or audio input so the VCR output could be sent to the television as RF to allow the tuner to capture and display the signal.
Most VCR modulators have a control to adjust the carrier frequency to allow it to use a channel that is not use by other Broadcast Television signals.
Modulators are used less often in recorders and players as virtually all televisions have at least one video input.
What else can I help you with?
Do tv sets made in 1999 need an RF modulator to connect to a VCR?
It depends on the TV brand and model, Usually the more expensive/better brand it is the more likely that you have the RCA inputs required for a VCR. You will have to check and see what you have.
How do you hook up a DVD and VCR when the combo doesn't have a coax hook to a television?
You'll need a VCR that already has a tuner (pref digital tuner in case your without cable) The VCR can select a channel and give an output on its RCA connectors, you can record using the VCR as a tuner. Pete
When was the VCR invented?
Sony came out with the first VCR for home use in 1975. It was called the Betamax. A year later, JVC introduced its VHS videocassette recorder. After a several-year battle, the VHS became the VCR standard. Sony began producing VHS recorders in 1988 and produced its last Betamax in 2002. The true first VCR was invented in 1956 and was the size of a piano. The VCR was invented in 1971 along with the dot-matrix, food processor and the liquid-crystal display The VCR that we see these days was invented in 1970.
What is a diode modulator?
A diode modulator is a type of AM modulator constructed using diodes. One type of diode modulator is the ring modulator shown in the image.
How is balanced modulator different from diode bridge modulator?
A diode bridge modulator is one kind of balanced modulator.
Do I need a VCR stand for my VCR to work properly?
A VCR stand is not necessary to make a VCR working properly as it is only a piece of furniture used to hold the VCR. A VCR will work as long as it is plugged into the wall and hooked up to a TV.
Where is modulator on a 1996 Jeep Cherokee?
A 1999 Jeep transmission does not have a modulator valve.
How Do you replace the transmission modulator valve on 1998 Chrysler cirrus?
This transmission does not have a modulator valve.This transmission does not have a modulator valve.
What is the abbreviations of VCR of computer?
The abbreviation of VCR is...
Where is the modulator on a 2008 Dodge Magnum?
It does not have a modulator
Does the transmission have a modulator valve?
as far as I understand , it does not have a modulator. e4od are electronic. no vacuum shift modulator
How do you know if the modulator valve for a 1985 Chrysler fifth ave needs replacing?
It doesn't have a modulator valve.It doesn't have a modulator valve.
