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PTP 250 User Guide
Wireless specifications
This section contains specifications of the PTP 250 wireless interface. These
specifications include RF bands, channel width and link loss.
General wireless specifications
Table 4-14
contains radio system specifications for the 5.8 GHz band.
Table 4-14 5.4 GHz RF specifications
Radio technology
RF band
Channel selection
Dynamic frequency control
Channel width
Manual power control
Receiver noise figure
Integrated antenna type
External antenna gain
Antenna beamwidth
Max path loss
Range (optical line-of-sight)
Over-the-air encryption
Weather sensitivity
Error correction
phn-2182_002v000
May 2011
contains radio system specifications for the 5.4 GHz band.
Specification
5.470-5.725 GHz
By dynamic frequency control and manual intervention
Automatic detection on start-up and continual adaptation.
Initially 10-15 sec. Out of service on interference 100 ms.
20 MHz and 40 MHz
Maximum power can be controlled lower than the power
limits in order to control interference to other users.
Typically 6 dB
Integrated flat plate antenna; gain 23dBi
See
Calculating EIRP for connectorized units
8 Degrees
150 dB (20 MHz channel, integrated antenna)
27 km (17 miles) at channel width 20 MHz
54 km (34 miles) at channel width 40 MHz
Proprietary scrambling mechanism.
Sensitivity at higher modes may be reduced during high winds
through trees due to Adaptive Modulation Threshold changes
FEC
Wireless specifications
Table 4-15
on page 4-30.
4-19
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