- Noise figure (gain) measurement range: 0 to 30 dB (-20 to at least 40 dB)
- Noise figure resolution: .01 dB (.001 dB over HP-IB)
- Gain resolution: .01 dB (.001 dB over HP-IB)
- Frequency range: tunable from 10 to 1600 MHz
- Frequency resolution: 1 MHz
- Noise figure (for input power levels below -60 dBm): < 7 dB + .003 dB/MHz
- Maximum operating input power: -10 dBm
- Noise source drive: 28.0 volt
346B Broadcast Noise Source
Individually calibrated values of ENR at cardinal frequencies printed on its label.
- Frequency range: 10 MHz to 18 GHz
- Excess noise ratio (ENR) limits: 14 to 16 dB
- Maximum SWR (reflection coefficient) on and off:
10 to 30 MHz - 1.3 (0.13)
30 to 5000 MHz - 1.15 (0.07)
5 to 18 GHz - 1.25 (0.11) - Power required: 28 Vdc