About TETRA
TETRA, otherwise known as Terrestrial Trunked Radio or Trans European Trunked Radio, is a global standard for digital trunked radio. It uses an advanced set of features such as secure voice and data transmission to manage the challenges of modern mobile radios.

Viavi 3920B Series Analog & Digital Radio Test Platform
High Performance FM / AM / SSB Analog Duplex Test Capabilities
The Viavi 3920B features an improvement to the RF signal generator phase noise specification of -110 dBc/Hz at 10 kHz offset. The instrument provides a comprehensive range of general purpose analog measurement facilities as well as advanced digital test options.

Viavi 8800SX Digital Radio Test Set
Digital Radio Test Set
The Viavi 8800SX combines the performance and features of a bench-level test set with the portability and ruggedness of a field-level instrument. Weighing only 17 lbs (7.71 kg), an internal battery with 2.5+ hours of operation.