Trango Broadband Wireless — M900S Professional Installation Guide Rev. A Draft
Page
1
Section 1 General Information
Contents
Each SU or AP radio comes equipped with an intenal dual polarization antenna, a power-over-Ethernet
(POE) J-Box, an AC adapter, and mounting hardware for pole mounting. The radio also has one
reverse-polarity SMA connectors on the side for attachment to an external antenna. The MAC ID and
Serial # are printed on a label on the back of the radio.
Connections
See M900S User Manual for detailed diagram for connecting radio to network or PC utilizing the power
over Ethernet (PoE) J-Box cat-5 cables.
NOTE: DO NOT APPLY DC POWER TO THE M900S-SU or M900S-AP UNTIL THE ANTENNA IS
ATTACHED WHEN USING THE “e” ANTENNA OPTION, OTHERWISE DAMAGE TO THE RADIO
MAY OCCUR.
Section 2 5. Setting the Maximum RF Power
Several FCC certified antennas options are available for the M900S-AP and M900S-SU. Due to FCC
restrictions the professional installer must manually set the maximum power when any antenna gain
greater than 10 dBi is used, since the max power of the radio is +26 dBm and the max EIRP allowed is
+36 dBm. The table below shows the maximum power setting the radio must have to achieve an EIRP
of +36 dBm or 4 watts (FCC limit). Only the antennas listed below are allowed to be used with the radio.
Antenna Model
Antenna Gain (incl/cable loss)
Radio Max power setting
BS915XL7
(Omni)
+8.65
dBi
+26
dBm
(no
change
required)
PC9013N
(Yagi)
+15
dBi
+21
dBm
Note that in all cases, Antenna Gain + Radio Max Power Setting = 36. Once set, the powerleveling
feature in the SU will still operate normally, but the maximum EIRP will never exceed 4 watts (+36 dBm).
NOTE: IT IS THE RESPONSIBILITY OF THE INSTALLER TO ENSURE THAT THE FCC
REQUIREMENTS DESCRIBED ABOVE ARE MET.
Use the following command to change maximum outpout power:
power range [<min, dBm> <max, dBm>]
The flash memory must be updated after running the command. (
save ss
)
Example: To set the max power to 21 dBm for the Cushcraft Yagi Antenna:
#> power range 10 21
[Min] 10 dBm [Max] 21 dBm
power range [<min, dBm> <max, dBm>]
#> save ss
Update flash successful.
Success.
