Public Safety Product Antennas
Tropos Mobile Router Installation Guide
22
Public Safety Product Antennas
The information in this section applies to the following Tropos router model:
94321000—Tropos mobile router for FCC public safety markets (802.11b/g 2.4 GHz and
802.11a 4.9 GHz)
Certifications:
USA: PJ9-BF4P9
Canada: 4751A-BF4P9
Note
Operation in the 4.9 GHz band requires an FCC license. The following eligibility rules are specified in
Part 90.1203 of the FCC rules:
•
Entities providing public safety services as defined under section 90.523 are eligible to hold an FCC
license for systems operating in the 4940-4990 MHz band. All of the requirements and conditions set
forth in that section also govern authorizations in the 4940-4990 MHz band.
•
4.9 GHz band licensees may enter into sharing agreements or other arrangements for use of the
spectrum with entities that do not meet these eligibility requirements. However, all applications in the
band are limited to operations in support of public safety.
Table 9
lists antenna configurations for the 802.11b/g antennas, and
Table 10
lists antenna
configurations for the 802.11a antennas.
Note
CANADA ONLY:
This device has been designed to operate with the antennas listed in
Table 9
, and
having a maximum gain of 12dBi. Antennas not included in this list or having a gain greater than 12dBi
are strictly prohibited for use with this device. The required antenna impedance is 50 ohms.
To reduce potential radio interference to other users, the antenna type and its gain should be so
chosen that the Effective Isotropic Radiated Power (EIRP) is not more than that permitted for
successful communication.
Table 9 802.11b/g Antenna Configurations for Public Safety (2400-2483 MHz)
Antenna
Ordering Number
Measured
Cond. Avg.
Power (dBm)
Tx
Attenuation
Software
Setting (dB)
Approximate
EIRP (dBm)
7.4dBi omni, unit mounted
AN074090
AN074091
AN074095
28.6
0
36
5.0dBi omni antenna, external
mounting
AN050024
AN050090
AN050091
AN050095
28.6
0
33.6
