Model Number: LinAire LX-4

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Transponder Control Panel

Aero Express is an Authorized Distributor for the LinAire LX-4 Test Panel.

To view click here: Standard Warranty Policy  LX-4 Cable Listing

Aero Express will buy, sell and  trade the LX-4 depending on your needs.  The LX-4 is an expressive epoxy LinAire tan with dark brown lettering with knobs of brown and gold.  The finish is extremely durable.  The LX-4 is 5.25: high, 19″ wide and 5.25″ deep and has a cabinet back that is suitable for rack mounting or stand alone.


  • A 4 digit digital meter is provided to monitor AC and DC voltage and current to the unit under test
  • Operates AC andDC units
  • An ON-STBY and STBY-OFF switch control the unit in on-off and stand by operation
  • A Mode encoding is accomplished with the digital A Mode thumbwheel control or the pulse identified toggle switches

1-Year Factory LinAire Warranty on all new products.


Express Calibration is an Authorized ISO-17025 Calibration and Repair shop for the LinAire LX-4.  Visit for full capabilities.

All units will be sold with a current calibration certificate. If factory new, a manufacturer’s Certificate of Conformance (C of C) will be provided.

Since its inception, Express Calibration Services has supported Aero Express’ endeavors in providing test equipment support services.

They perform calibrations for General Aviation, Corporate Aviation, OEMs, FAA Repair Stations, Military, as well as Regional and Air Transport Airlines. Express Calibration Services offers their services when you have a requirement for calibration or repair of your test equipment