User's Guide Part 1

Chapter 3: System planning Radio spectrum planning
Channel bandwidth
(MHz)
5, 10, 15,
20, 30, 40,
45
5, 10, 15,
20
5, 10, 15,
20, 30, 40,
45
5, 10, 15,
20, 30, 40,
45
5, 10, 15,
20, 30, 40,
45
5, 10, 15,
20, 30, 40,
45
Typical receiver
noise
6.5 dB 6.5 dB 6.5 dB 6.8 dB 6.8 dB 7.1 dB
Typical antenna
gain (integrated)
21.0 dBi 21.5 dBi 21.5 dBi 21.5 dBi 23.0 dBi 22.0 dBi
Antenna
beamwidth
(integrated)
8° 8° 8° 8° 8° 8°
Regulatory limits
Many countries impose EIRP limits (Allowed EIRP) on products operating in the bands used by
the PTP 700 Series. For example, in the 5.4 GHz and 5.8 GHz bands, these limits are calculated
as follows:
• In the 5.4 GHz band (5470 MHz to 5725 MHz), the EIRP must not exceed the lesser of 30
dBm or (17 + 10 x Log Channel width in MHz) dBm.
• In the 5.8 GHz band (5725 MHz to 5875 MHz), the EIRP must not exceed the lesser of 36
dBm or (23 + 10 x Log Channel width in MHz) dBm.
Some countries (for example the USA) impose conducted power limits on products operating
in the 5.8 GHz band.
Conforming to the limits
Ensure the link is configured to conform to local regulatory requirements by installing license
keys for the correct country. In the following situations, the license key does not prevent
operation outside the regulations:
• When using connectorized ODUs with external antennas, the regulations may require the
maximum transmit power to be reduced.
• When installing 5.2 GHz or 5.4 GHz links in the USA, it may be necessary to avoid
frequencies used by Terminal Doppler Weather Radar (TDWR) systems. For more
information, refer to Avoidance of weather radars (USA only) on page 3-24.
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