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Tesladude
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Can I use a 315MHz transmitter module to send a composite video signal to another reciever module?
PAL and NTSC get away with about 7MHz.Baluncore said:Bandwidth of a 315 MHz module is probably too narrow for video signals.
315 MHz is usually used for lower data rate digital links.
Which is the problem. The SAW filters used in 315MHz modules are usually only 600 kHz wide.sophiecentaur said:PAL and NTSC get away with about 7MHz.
Extract from Maxim APPLICATION NOTE 3587 said:FCC Section 15.231(c) states that the emission bandwidth of the intentional transmission shall be no wider than 0.25% of the center frequency, where the emission bandwidth is determined by the points in the radiated spectrum that are 20dB below the modulated carrier. For 315MHz and 433.92MHz, the two most-used frequencies in the 260MHz to 470MHz unlicensed band, the maximum allowable bandwidths are 787.5kHz (±394kHz) and 1.085MHz (±542kHz).
Baluncore said:Which is the problem. The SAW filters used in 315MHz modules are usually only 600 kHz wide.
http://www.maximintegrated.com/en/app-notes/index.mvp/id/3587
Then they fail to meet the FCC specifications in USA where 315 MHz ±394kHz is available for compliant devices.sophiecentaur said:They claim to be AV capacity.
The answer is NO. Do not use 315 MHz or 433 MHz for video.Tesladude said:Can I use a 315MHz transmitter module to send a composite video signal to another reciever module?
That is very wise.davenn said:was trying to get Tesladude as far away as possible from the 315 and 433MHz bands
Baluncore said:T
I don't think PF should encourage anarchy in the spectrum.
Composite video transmission involves combining all the video information, including brightness, color, and synchronization signals, into a single signal that is sent through a single cable. This signal is then decoded by the receiving device to recreate the video image.
To transmit composite video, you will need a video source, such as a DVD player or camera, a composite video cable, and a receiving device, such as a television or monitor, that is compatible with composite video input. You may also need additional adapters or converters depending on the specific equipment you are using.
The maximum distance for composite video transmission depends on the quality of the cable and the strength of the video signal. Generally, composite video can be transmitted up to 100 feet without any signal loss, but for longer distances, it is recommended to use a higher quality cable or a signal amplifier.
Yes, composite video can be transmitted wirelessly through the use of a video transmitter and receiver. This method is commonly used for surveillance systems or in situations where running cables is not feasible.
Yes, there are some disadvantages to using composite video transmission. The main disadvantage is that it is an analog signal, which means it is more susceptible to interference and can result in lower quality video compared to digital signals. Additionally, composite video does not support high-definition resolutions, making it less ideal for modern video technology.