RAM 9000 Series Hardware Guide 2-31
Hardware Installation Revised 2015-07-16
Antennas and Wireless
To get the best performance, this second antenna should be placed at a minimum of 5/8 of a wave length away
from the other antenna. Therefore, the minimum spacing for antennas in the 800 MHz frequency is 5/8 * 13.5”
= 8.5”. The diversity antenna can be spaced further away than this, ideally in increments of 13.5”, 22”, 35”, etc.
For a 1900 MHz only network, the optimal distance would be 5/8 * 6.2” = 4”. Orienting the antennas differently
from one another may also improve performance, particularly when the antennas are close together.
• GPS: This unit uses an active antenna only. It is used for receiving signals only. Please refer to the Red Lion
website for information on GPS antennas.
• Wi-Fi: A reverse-SMA (female) connector is provided on the RAM-9x3x units that include Wi-Fi connectivity.
Please use a 50 ohm cable and antenna that are rated for Wi-Fi connectivity per IEEE 802.11b/g/n. Please refer
to the Red Lion
website for information on Wi-Fi antennas.
Per FCC requirements the antenna gain including cable loss must not exceed 7.5 dBi in the Cellular band, 3 dBi in
the PCS band, 5.5 dBi for LTE Band 4, and 9 dBi in the LTE Band 17 for RF exposure purposes of 2.1091. The
antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all
persons. The antenna(s) used for this transmitter must not be co-located or operating in conjunction with any
other antenna or transmitter except in accordance with FCC multi-transmitter evaluation procedures.
Cellular Antenna and Cable Specifications
The selected cellular antenna(s) must meet the following specifications:
• Nominal 50 ohm impedance
• Voltage Standing Wave Ratio (VSWR) less than 2.5:1
• Male SMA connector
Frequency Specifications
RAM-96xx
RAM-97xx
TECHNOLOGY BANDS FREQUENCIES ANTENNA CONFIGURATION
CDMA/EVDO
BC0, BC1 800/1900 MHz Diversity Support
TECHNOLOGY BANDS FREQUENCIES ANTENNA CONFIGURATION
LTE 1, 4, 17
700/1900 & 1700 (AWS)/
2100(AWS) MHz
MIMO Required
Fallback HSPA+ 1, 2, 5, 6 800/850/1900/2100 Diversity Support
Fallback GSM/GPRS/EDGE - 850/900/1800/1900 MHz -
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