The MT2605B/B1 is complete radio communications analyzer system which can cover a frequency range from 100kHz to 2GHz. Basic Functions for Radio Testing: The MT2605B/B1 can perform the same funcation as the following 10 insturments: Signal generator, AF generator, frequency counter, power meterm modulation meter, AF_level meter, distortion meter, oscilloscope, DC voltmeter, and DC ammeter. The MT2605B1 can be used for car or portable telephones' power down measurement.