Raster Considerations; Transmit Power Reduction At The Band Edges; Distance; Figure 16 - 5.8 Ghz Band Edge Tx Power Reduction (Region Code 1 Only) - Motorola PTP 600 Series User Manual

5.4.4

Raster Considerations

The PTP 600 Series Bridge 5.8 GHz variant operates on a 10 MHz channel raster that is set
to even center frequencies. See Figure 15.
5.4.5

Transmit Power Reduction at the Band Edges

Operation at or near the 5.8 GHz band edges can results in a lower maximum transmit power.
In some configurations the PTP 600 Series Bridge solution reduces the power when
operating at the edge channels. The amount of reduction, if any, is dependant on the region
code of the region of operation. This currently only affects systems configured with Region
Code 1.
The power reduction in the edge channels is presented in Figure 16.
Band Edge
5725 MHz
5740 MHz
5742 MHz
5744 MHz
5746 MHz
5748 MHz
Lower Centre
Frequency

Figure 16 - 5.8 GHz Band Edge TX Power Reduction (Region Code 1 Only)

5.5

Distance

The PTP 600 Series Bridge will operate at ranges from 100 m (330 ft) to 200 km (124 miles),
within 3 modes: 0-40km (0-25 miles), 0-100km (0-62 miles) and 0-200km (0-124 miles).
Operation of the system will depend on obstacles in the path between the units. Operation at
40 km (25 miles) or above will require a near line-of-sight path. Operation at 100m (330 ft)
could be achieved with one unit totally obscured from the other unit, but with the penalty of
transmitting at higher power in a non-optimal direction, thereby increasing interference in the
band. This subject is covered in more detail in section 6.1.3 "Path Loss Considerations".
15 25 25 25 25
19 25 25 25
19 25 25 25
19 25 25
19 25 25
Maximum Available Tx Power (dBm) Region Code 1 Only
44
25 25 25 25
25 25 25 25 25
25 25 25 25
25 25 25 25 25
25 25 25 25
Band Edge
5850 MHz
19
19 Default
25 15
25
25 25