View Full Version : Frequency Sharing in TV Channels

20-03-2011, 04:18 AM

I just want to know whether a same frequency can be shared by 2 different TV channels?
If it can be shared, can both the channels be telecasted at the same time?????

Thank You.

20-03-2011, 09:13 AM

Peter H
20-03-2011, 12:02 PM
Maybe - one vertically polarised, the other horizontal.

20-03-2011, 03:39 PM
Are you talking digital TV, such as Freeview ?

If so, the answer appears to be yes - see http://en.wikipedia.org/wiki/DVB-T

"...Rather than carrying the data on a single radio frequency (RF) carrier, OFDM works by splitting the digital data stream into a large number of slower digital streams, each of which digitally modulate a set of closely spaced adjacent carrier frequencies. In the case of DVB-T, there are two choices for the number of carriers known as 2K-mode or 8K-mode. These are actually 1,705 or 6,817 carriers that are approximately 4 kHz or 1 kHz apart...."

20-03-2011, 06:30 PM
What about DVB-s?