8
Antennas
For basic wireless applications, the supplied antenna rods provide excellent results. For more
complicated systems, remote antennas can further enhance reliability and reception.
There are two common remote antennas used for multi-channel systems:
1) Omnidirectional Antennas
Omnidirectional antennas, such as the passive A1031-U, receive or radiate
UHF signals in a circular, ‘donut’ shaped pattern. Omnidirectional antennas
are an excellent choice for indoor applications and situations where the
transmitter’s range of movement is unpredictable.
2) Directional Antennas
Directional antennas, such as the passive A2003-UHF, provide superior
passive forward gain and ‘reach’ by suppressing unwanted RF signals
from behind. Directional antennas excel in outdoor applications and
situations where the transmitter’s range of movement is contained to
a specific area, such as a stage.
Remote antennas often enhance system performance through better placement. Stand-mountable
remote antennas can be located physically higher than antenna rods, which improves line of sight
and reduces disruptive reflections. Wider antenna spacing is also possible, which enhances stability
by maximizing diversity. In multi-channel setups, receivers are often rack-mounted, which can place
numerous metal housings in the transmission path. By relocating the antennas out of the rack, signal
quality can also be significantly enhanced.
In multi-channel applications, the signal from a master pair of remote antennas can be distributed to
multiple receivers simultaneously by an antenna splitter.
Active Antenna Distribution
The ASA 1 is an active, dual 1:4 splitter, capable of feeding up to four diversity receivers from
a pair of master antennas. Two ASA 1s can be coupled together to feed up to eight receivers.
The ASA 1 maintains unity gain by first boosting the incoming signal before passively splitting
it to multiple outputs. In addition to antenna distribution, the ASA 1 also provides DC power
distribution for all connected G3 series receivers, streamlining wiring by eliminating numerous
individual power supplies.
A1031-U
A2003-UHF
ASA 1 Active Antenna Splitter
