Chapter 3: System planning
Radio spectrum planning
Page 3-21
Table 62 PTP 670 wireless specifications (per frequency band), 4.8 GHz to 5.9 GHz Variant
Item
4.8 GHz
4.9 GHz
5.1 GHz
5.2 GHz
5.4 GHz
5.8 GHz
RF band (MHz)
4800–4900 4900–4990 5150–5250 5250–5350 5470–5725 5725–5875
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
7.5 dB
7.5 dB
7.5 dB
7.8 dB
7.8 dB
8.1 dB
Typical antenna
gain (integrated)
23.0 dBi
23.0 dBi
23.0 dBi
23.0 dBi
23.0 dBi
23.0 dBi
Antenna
beamwidth
(integrated)
8°
8°
8°
8°
8°
8°
Table 63 PTP 670 wireless specifications (per frequency band), 4.9 GHz to 6.05 GHz Variant
Item
4.9 GHz
5.1 GHz
5.2 GHz
5.4 GHz
5.8 GHz
5.9 GHz
RF band (MHz)
4900–4990 5150–5250 5250–5350 5470–5725 5725–5875 5825–6050
Channel bandwidth
(MHz)
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
5, 10, 15,
20, 30, 40,
45
Typical receiver
noise
6.0 dB
6.0 dB
6.0 dB
6.0 dB
6.0 dB
6.0 dB
Typical antenna
gain (integrated)
23.0 dBi
23.0 dBi
23.0 dBi
23.0 dBi
23.0 dBi
23.0 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 670 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.
