Overview of PTP 450
PTP 450 Configuration and User
pmp-0815 (August 2015)
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Whereas multi-pathing degrades a link in some technologies (FSK, for example), OFDM
can often use multi-pathing to an advantage to overcome nLOS, especially in cases where
the Fresnel zone is only partially blocked by buildings, “urban canyons”, or foliage. OFDM
tends to help especially when obstacles are near the middle of the link, and less so when
the obstacles are very near the BHS or BHM.
However, attenuation through walls and trees is substantial for any use of the
3.5/3.6/5.4/5.8 GHz frequency bands. Even with OFDM, these products are not expected to
penetrate walls or extensive trees and foliage.
Typical Deployment
After ordering a BH unit, the customer can decide, via software configuration, if this unit is
a BHM (Backhaul Master) or a BHS (Backhaul Slave). The radio link operates on a single
frequency channel using Time Division Duplex (TDD).
Applications for the PTP 450 Series include:
Enterprise Access
nLOS video surveillance
Leased line replacements and backup solutions
Network extension
System Components
PTP 450 Backhaul Radio
The Backhaul radio is a transceiver device. It is a connectorized or radiated outdoor unit
containing all the radio, networking, and surge suppression electronics. It can be
configured as
Backhaul Master (BHM)
Backhaul Slave (BHS)
PTP 450 Accessories
Power Supply:
An indoor power supply module providing Power-over-Ethernet (PoE)
supply to the BHM or BHS.
Cabling and lightning protection:
Cat 5e cables, grounding cables, connectors and
lightning protection (surge suppression).
