Novatel ANT-A72GA-TW-N Leaflet

The ANT-A72GA-TW-N is an active 
antenna designed to operate at the 
GPS L1 and L2 frequencies, 
1575.42 and 1227.60 MHz. The 
antenna is aircraft certified for   
navigation. This guide provides the 
information needed to install and 
use the antenna. 

• A device with an antenna input port that both receives the RF 

signal and provides 2.5 to 24.0 VDC to the antenna is required 
to set up the ANT-A72GA-TW-N. (NovAtel GPS receivers pro-
vide the necessary power through their antenna RF connec-
tors.)

• Coaxial cable with a male TNC connector

Both the input DC power and the output RF signal flow over a 
single coaxial cable connected to the unit's TNC female 
connector.

The antenna is attached to a surface by means of an ARINC-743 
Bolt Pattern. Four screws pass through the housing of the 
antenna. 

Install the antenna as follows:

1. Place the o-ring into groove on the antenna base (o-ring 

supplied).

Note: User-supplied o-ring grease can be used to hold the o-ring in the 

groove during installation.

2. Pre-drill the mounting holes and the connector hole on the 

surface. Refer to the Mechanical Drawings section of this 
guide for details on the ARINC-743 mounting pattern.

3. Attach the antenna to the surface using the four mounting 

screws supplied. The o-ring will compress and create a seal 
between the surface and the antenna.

1

Antenna

4

O-ring

2

Countersink screws

5

Pre-drilled mounting holes

3

Mounting surface

4. Remove the dust cap from the antenna’s TNC connector.

5. Attach the male TNC connector of the coaxial cable to the 

antenna’s TNC connector. 

6. Attach the other end of the coaxial cable to the antenna input 

port of the receiving device. The receiving device must be 
able to provide power as detailed in the SPECIFICATIONS 
section of this guide. All NovAtel GPS receivers provide the 
necessary power through their antenna RF connectors.

The graphic above shows examples of where the ANT-A72GA-
TW-N antenna may be located on an aircraft or vehicle (not to 
scale).

The ANT-A72GA-TW-N is designed to withstand the elements, 
including rain, snow and dust. However, to ensure your antenna 
performs optimally, keep the radome clean and brush off any ice 
and snow. In addition, ensure the TNC connector remains clean 
and dry and replace the dust cap when a cable is not connected. 

1

2

3        4                    5

1

3    

2

4

1

Antenna screwed into 
place

2

Surface

3

TNC connector (male)

4

Coaxial cable (female)