Request Technical Support

Form for Technical Support

Experiencing Technical Difficulties?

In order to better assist you, please follow the steps listed below. The answers will help our technicians determine the best course of action to start up or repair your NDB or DGPS system.

Please answer the following: (* required fields)

Step One

Step Two

Are there fuses blown on the AC or DC input fuses?


Has the transmitter shut down?


Is there a fault light lit on the transmitter?


Do you have a 50-Ohm test load?


Have you disconnected the ATU and operated the transmitter into a 50 Ohm test load?


Does the transmitter shut down while operating on the test load?



Does the transmitter have an RF output on the test load?


Are there any known failures with the SPA and DMOD board?


Can you confirm that the ATU is getting 12V DC at TB1-1?


Does the transmitter and ATU operate into an Artificial Antenna?


Do you have a Remote Control Unit (RCU)? Keep in mind this is not a timer control panel.


If so, are the LED's constantly illuminated on the RCU?


Please provide several pictures from different angles of the following:

Outside of the transmitter showing where and how it is installed,
-Outside of the ATU showing where and how it is installed,
-Inside of the ATU showing the connection of the insulator,
-Inside of the ATU showing the connection of the taps on the coilform,
-Inside of the ATU showing the connection of the taps on the terminal blocks,
-Outside of the ATU showing the connection of the antenna line to the insulator,
-The connection of the antenna line to the antenna,
-The base of the antenna
-The whole antenna
-Anything that looks unusual about any of the NDB parts.
I agree with the Terms and Conditions *

Step Three

After sending the above information, Southern Avionics Technical Support can be reached directly Monday through Thursday 8:00-5:00pm Central Standard Time. Please reference the above form.

BEFORE calling, make sure you have the following in place!

A Technician on site with the following testing equipment:

  • Oscilloscope
  • Multimeter
  • Frequency counter

Then call Southern Avionics Tech Support +409.842.1717 ext. 107 or ask for the Technical Department

We look forward to assiting to you!

 

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