Electro-Voice MS3000 Series, Owner'S Manual

Page: 6 / 12

MS3000 OWNERS MANUAL
page 6
ANTENNA PLACEMENT
For any wireless system to perform correctly, strong
RF signals are mandatory. To maximize signal
strength, good antenna placement must be utilized.
Although some situations prohibit perfect antenna
placement, here are some guidelines:
1. The antennas should be placed in a location
with a clear signal path to the transmitter. Walls,
ceilings, metal objects, equipment racks, etc.
are all signal barriers that will reduce range and
performance. Generally speaking, placing the
receiver at an elevated location can help in-
crease range and signal strength.
2. If the receiver is rack-mounted, external an-
tennas are necessary. Do not rack mount
the MR3000 with the antennas mounted
directly on the back of the unit. This will
severely decrease the range and perfor-
mance of the system.
If the MR3000 is rack-mounted, make sure the
antennas are front-mounted (following the direc-
tions noted above). If antennas are mounted
remotely from the chassis, the ¼-wave anten-
nas supplied with the receiver cannot be used.
The ½-wave antennas are a necessity if the an-
tennas are remote-mounted and can provide
better performance when used with the rack
mount.
If antennas are remote-mounted, separating
them 6 feet (1.8 M) or more and keeping them
at least 2 feet (.6M) from other barriers will im-
prove performance (see Figure 11). If you are
remote mounting the antennas and require
strong signal over a large area, consider using
highly directional antennas such as a log-peri-
odic. The LPA500 available from Electro-Voice
is tuned for frequencies from 450 – 900 MHz
Figure 9
Figure 10
Figure 11
Figure 8—
½
-Wave Antenna for Remote Mounting
and can provide an additional 5 dB of gain
3. If you remote-mount the antennas, attention
should be paid to the type and quality of the
antenna cable. For cable runs longer than 25-ft
(7.6 M), special low-loss cables should be used.