User's Manual

Document Name: MARS Box User Manual
Version No: 0.2
Company Name: NextNav, LLC.
Confidential Page 8 10/24/2013
Page 8 of 9
3 Antenna Mounting
3.1 TX Antenna
Tx antenna will be installed indoors. In normal configurations, antenna is to be attached to the
ceiling structures. Proper installation procedures must be followed as defined in site specific
construction drawing. As a general rule the TX antenna shall be kept a minimum distance of 6
feet from any metallic vertical structures on other types of obstructions.
This radio transmitter (FCC ID: A4P-200-0013-01) has been approved by FCC to operate with the
antenna types listed below with the maximum permissible gain and required antenna
impedance for each antenna type indicated. Antenna types not included in this list, having a gain
greater than the maximum gain indicated for that type, are strictly prohibited for use with this
device.
This radio transmitter may only operate using a vertically polarized antenna with maximum net
gain of antenna and cable of +6 dBi. To reduce potential radio interference to other users, the
antenna gain should be so chosen that the effective radiated power (ERIP) does not exceed 4
Watts.
Antenna Type: Monopole
Polarization: Vertical
Following is a list of the possible antennas and antenna cables combinations.
Antenna
type
Antenna
Gain
(dBi)
Cable Type
Length
(feet)
Cable
Loss
(dB)
Attenuation
Setting (dB)
PA
output
(Watts)
EIRP (W)
(PEP)
MPA-806-N
(omni
config)
2.5
LMR400
10’
0.4
1.0
0.85
1.38
AL4RPV-50
10’
0.2
1.0
0.85
1.45
MPA-806-N
(90° sector
config)
7.0
LMR400
10’
0.4
1.0
0.85
3.89
AL4RPV-50
10’
0.2
1.5
0.35
3.63
Table 2 – NextNav Local antenna and cable options
Note: PA output level (controlled using internal attenuation setting) refers to internal system
parameter. This parameter will be used by the NOC to configure the radio output power.