 |
|
 |
| |
|
|
| |
At television
transposer or transmitter stations it
is often more economical to receive
and to broadcast several television
programmes via a common antenna, instead
of providing a separate one for each
programme. This of course is on the
assumption that broadband receiving
antennas are used and that the transmitting
antennas are designed to cover all the
channels concerned, or that there is
a frequency channel plan which ensures
that a given station uses channels within
a single antenna frequency band. It
is also necessary to ensure that the
antenna power, and voltage, ratings
are not exceeded by the simultaneous
presence of several signals.
|
|
|
|
|
|
