Mobile InterferenceHunter Help : Installation : Setting Up an External USB GPS Antenna
 
Setting Up an External USB GPS Antenna
A GPS receiver is required for proper operation. If your instrument is equipped with a GPS option, use a GPS antenna connected to the handheld instrument and go to From the MIH program:. Otherwise, use an Anritsu GPS receiver connected to the computer USB port. MIH currently supports the BU-353S4 GPS receiver (Anritsu part number 2000-1528-R). Set up the receiver.
1. Download and install the latest driver from the GPS manufacturer’s website to the tablet or laptop that will be used in finding an interferer. (Anritsu has tested Prolific driver version 3.8.1.3.)
2. Attach the external GPS receiver to the computer’s USB port.
3. Confirm that Windows has installed the hardware driver and that it is listed under Ports (COM & LPT) in the Windows Device Manager.
4. Right-click on its listing followed by clicking on Properties to verify the device is working properly and that the Port Setting are configured as shown below (4800/8-N-1).
Communication Port (COMx) Properties Window
From the MIH program:
5. Click GPS Configuration in the Settings menu.
6. Click the GPS antenna option.
MIH USB GPS Communication Setup Window
7. Click Start in the MIH USB GPS Communication Setup. The antenna will search for satellites and obtain a GPS Fix.
8. Click Ok.
Caution 
The USB GPS communication must be running and the setup window must be closed by clicking Ok before data collection can be started.
When using the GPS receiver with the computer, the Mobile InterferenceHunter main status bar at the bottom-left of the window has a GPS satellite fix indicator that can also show how many satellites are being tracked.
GPS Satellite Fix Indicator
To discontinue GPS antenna communication:
9. Open the dialog.
10. Click Stop.