Diplexer: Difference between revisions
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UHF and VHF frequencies from different aerials can both be sent down the one cable by using a diplexer to combine the 2 signals. At the user end, another diplexer separates the 2 again. | UHF and VHF frequencies from different [[TV aerial|aerials]] can both be sent down the one [[Cable for TV aerials|cable]] by using a diplexer to combine the 2 signals. At the user end, another diplexer separates the 2 again. | ||
* If one aerial is used to receive both UHF and [[VHF aerial|VHF]], only the user end diplexer will be present. | |||
Its also possible to use a splitter to divide the signal, | Its also possible to use a splitter to divide the signal instead of a diplexer, but this causes significant signal loss. Instead of dividing it up by frequency, a splitter passes some of all frequencies out to both outputs. Splitters work, but give inferior results to use of a diplexer. | ||
Triplexers combine or split 3 different frequency bands. | A diplexer can't be used to divide a TV signal to 2 outputs for 2 TVs, it will simply send all the TV frequency signal to one output only. | ||
A diplexer has 3 ports, and it matters which cable connects to which. No ports can be swapped around. | |||
Triplexers combine or split 3 different frequency bands. In principle its possible to transmit medium wave, VHF, DAB, TV and satellite signals all on one feed [[Cable for TV aerials|cable]]. | |||
==See Also== | ==See Also== | ||
* [[TV aerial]] | |||
* [[VHF aerial]] | |||
* [[Special:Allpages|Wiki Contents]] | * [[Special:Allpages|Wiki Contents]] | ||
* [[Special:Categories|Wiki Subject Categories]] | * [[Special:Categories|Wiki Subject Categories]] | ||
Latest revision as of 23:25, 24 April 2009
UHF and VHF frequencies from different aerials can both be sent down the one cable by using a diplexer to combine the 2 signals. At the user end, another diplexer separates the 2 again.
- If one aerial is used to receive both UHF and VHF, only the user end diplexer will be present.
Its also possible to use a splitter to divide the signal instead of a diplexer, but this causes significant signal loss. Instead of dividing it up by frequency, a splitter passes some of all frequencies out to both outputs. Splitters work, but give inferior results to use of a diplexer.
A diplexer can't be used to divide a TV signal to 2 outputs for 2 TVs, it will simply send all the TV frequency signal to one output only.
A diplexer has 3 ports, and it matters which cable connects to which. No ports can be swapped around.
Triplexers combine or split 3 different frequency bands. In principle its possible to transmit medium wave, VHF, DAB, TV and satellite signals all on one feed cable.