User manual

PRODUCT OVERVIEW
001-7100-100 Version 0 Page 12 of 66 Vanguard 3G User Manual CDMA Version
2.8 Antenna Options
Antennas are available for Vanguard 3G radio modems installations from CalAmp Corp.
2.8.1 Primary Cellular Antenna
The Vanguard 3G product requires a multi-band cellular antenna for operation in the 800 MHz
band, the 1900 MHz band, and the 2100 MHz band. The primary antenna connection on the
Vanguard 3G unit is a TNC female connector; therefore you must purchase an antenna with a
TNC male connector. Do not select a TNC antenna with “reverse polarity” or RP-Male. Mounting
options and cable lengths are the user’s choice and application specific.
Caution:
To comply with FCC approval for this device, do not use a cellular antenna with a gain
greater than 5 dBi in the cellular (800MHz) band, or 4 dBi in the 1900MHz band.
2.8.2 RX Diversity Cellular Antenna
The Vanguard 3G radio modem RX Diversity antenna has the same requirements as the primary
antenna with the exception of the connection. The RX Diversity antenna connection on the
Vanguard 3G product is an SMA female connector; therefore an antenna with an SMA Male
connection is required. Mounting options and cable lengths are the user’s choice and application
specific. For best performance, separation between the Primary and Diversity antenna should be
at least 5/8 wavelength (=8 inches or 20 cm for 915 MHz).
Caution:
To comply with FCC approval for this device, do not use a cellular antenna with a gain
greater than 5 dBi in the cellular (800MHz) band, or 4 dBi in the 1900MHz band.
2.8.3 GPS Antenna
The Vanguard 3G radio modem’s GPS connector requires an external 3.3V GPS antenna. The GPS
antenna connection on the Vanguard 3G product is a female SMA connector; therefore an
antenna with an SMA male connector is required. For best coverage, use an active antenna with
a gain >25dB. Mounting options and cable lengths are user’s choice and application specific.
2.8.4 WiFi Antenna
The WiFi antenna connection on the Vanguard 3G product is an RP-SMA jack; therefore an
antenna with an RP-SMA plug is required. Mounting options and cable lengths are user’s choice
and application specific.
Industry Canada RSS Notices:
This device has been designed to operate with the antennas listed below, and having a
maximum gain of 5.5 dBi. Antennas not included in this list or having a gain greater than 5.5
dBi are strictly prohibited for use with this device. The required antenna impedance is 50Ω.
Table 4 - Recommended WiFi Antenna
Manufacturer Model Number Antenna Type Gain
RadioLabs Inc 2.4-mobile3 Mag Mount 5.5 dBi
To reduce potential radio interference to other users, the antenna type and its gain should be
so chosen that the equivalent isotropically radiated power (EIRP) is not more than that
permitted for successful communication.