Viavi IFR6000 Review - Avionics Test Set for Transponder, ADS-B & TCAS | AvionTEq 06 June 2025 AvionTEq Blog Discover why the Viavi IFR6000 remains a top choice for aviation professionals. Test transponders, ADS-B, TCAS, and DME with accuracy and efficiency. Available new or refurbished at AvionTEq. Learn more. [More] Share