For installation of ground-plane dependent antennas, the center of the surface used for mounting is pref-
erable for best omni-directional pattern. For ground-plane independent antennas, installation may be close
to the edges of the mounting surface.
R
T
37cm
14.58in.
≥
5/8
λ
900MHz: 8”/21cm)
Figure 3 - Antenna spacing
2.2.4 Acceptable
Antennae
The antennae listed in Table 2 were tested and typed for maximum gain. These antennae are FCC ap-
proved for use with the HiPR-900. Similar antenna types from other manufacturers are also acceptable.
Table 2 - Acceptable Antennae
Type
Manufacturer
Part Number
Gain
(dBi)
Yagi
Maxrad
BMOY8903
8.5
Omni Directional
Maxrad
MFB9153
5.1
Directional Panel
Maxrad
MP8066
8.1
Portable Maxrad
MEXR-902-BN
2.5
2.3 Network
application
HiPR-900 is suited to a variety of network applications. Its primary design goal was to satisfy the needs
of SCADA systems using RTUs or PLCs in either point-to-point or point-to-multipoint service. This sec-
tion gives an overview of some common configurations.
2.3.1 Modes
2.3.1.1 Bridge
mode
Bridge mode provides for fast set-up. IP bridging for quick deployment of basic point-to-point and point-
multipoint networks with minimal configuration. Bridge mode carries ARP and is transparent to any IP-
based or IP-encapsulated protocols.
2.3.1.2 Router
mode
Used in advanced networks, router mode enables OIP optimization for reduced overhead and improved
throughput, and supports more complex network topologies such as store-and- forward and multihop
links. There is only one model to buy or stock because any HiPR900 unit can be configured for bridge or
router mode, router gateway (access point), remote station, or even as a combined store-and-forward re-
mote with a local drop.
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