BT/SN/RAM 6000 Series
Hardware Guide
2-28
Hardware Installation
Revised 2015-07-16
Ethernet Cable
If you are connecting to the modem via the Ethernet port, you will need a straight or crossover category 5 cable
with two 8-pin RJ45 connectors on each end.
To visually confirm that Ethernet cabling was done properly, check the LED indication on the Ethernet port located
at the rear panel of the modem. The Link LED should be on when the right cable is used.
USB Cable
This is an Ethernet-over-USB connection which behaves like an Ethernet connection. It can only be connected to a
PC with Windows 7, Windows XP or Windows Vista installed. If you are connecting to the modem via the USB
port, you will need a Type A plug to Type B mini plug USB cable for the BT/SN/RAM-6000 series modems. In order
for the USB connection to work, you need to install the Sixnet RNDIS USB driver which is available at
www.redlion.net
.
Parameter
Requirements
Comments
Frequency range
• Narrow-band GPS:
1575.42 MHz ±2 MHz minimum
• Wide-band GPS and GLONASS:
1565 - 1606 MHz recommended
Field of view (FoV)
• Omni-directional in azimuth
• -45° to +90° in elevation
Polarization (Average Gv/Gh)
>0 dB
Vertical linear polarization is sufficient.
Free space average gain (Gv+Gh)
over FOV
> -6 dBi (preferably > -3 dBi)
Gv and Gh are measured and averaged
over -45° to +90° in elevation, and
±180° in azimuth
Gain
• Maximum gain and uniform
coverage in the high elevation
angle and zenith
• Gain in azimuth plane is not
desired
Average 3D gain
> -5 dBi
Isolation between GNSS and Ant1
> 10 dB in all uplink bands
Typical VSWR
< 2.5:1
Polarization
Any other than LHCP (left-hand cir-
cular polarized) is acceptable
