MS2024B
 VNA Frequency: 500 kHz to 4 GHz

MS2025B
 VNA Frequency: 500 kHz to 6 GHz

MS2034B
 VNA Frequency: 500 kHz to 4 GHz,
 Spectrum Analyzer, 9 kHz to 4 GHz

MS2035B
 VNA Frequency: 500 kHz to 6 GHz,
 Spectrum Analyzer, 9 kHz to 6 GHz