Exalt Installation and Management Guide
ExtendAir (TDD) Series Digital Microwave Radios
106
203591-004
2010-09-20
EIRP Limits for the United States and Canada
EIRP for the USA and Canada
4940–4990 MHz Band
For the ExtendAir (TDD) Series 4.9xx models, within the 4940–4990 MHz band, the maximum EIRP
allowed is +50dBm. The maximum output power of the radio shall never 24dBm.
The transmit power must be reduced from maximum (+24dBm for 20MHz BW; +22dBm for 10MHz)
by 1 dB for every 1dB that the antenna gain exceeds 26dBi (including transmission system losses)
5250–5350 MHz Band
For all within the 5250–5350 MHz band, the maximum EIRP is 30 dBm. The maximum output of the
radio is +13 dBm.
P = 30 – G + L
where:
5470–5725 MHz Band
For all models within the 5470–5725 MHz band, the maximum EIRP allowed is 30 dBm. The
maximum output power of the radio is +13 dBm.
P = 30 – G + L
where:
Note:
The professional installer is responsible to ensure that RF output power is properly
adjusted to not exceed the regulatory limit.
P
=
Maximum transmitter output power of radio, in dBm.
G
=
Specified gain of antenna, in dBi, from 5250 to 5350 MHz.
L
=
Total transmission system losses of all elements between the radio’s RF connector and
the antenna’s RF connector (all cables, connectors, lightning suppressors), in dB, as
specified or measured between 5250 and 5350 MHz.
P
=
Maximum transmitter output power of radio, in dBm.
G
=
Specified gain of antenna, in dBi, from 5470 to 5725 MHz.
L
=
Total transmission system losses of all elements between the radio’s RF connector and the
antenna’s RF connector (all cables, connectors, lightning suppressors), in dB, as specified
or measured between 5470 and 5725 MHz.
