Antenna Placement

MS3000 OWNERS MANUAL

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.

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.

Figure 10

Figure 8—½-Wave Antenna for Remote Mounting

Figure 11

Figure 9

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

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