If the photograph is clicked, it grows.

Agilent R347B 26.5-40GHz Noise Source
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Frequency range : 26.5 - 40 GHz
Excess noise ratio (ENR) range 26.5 - 40 GHz: 10 - 13 dB
Maximum SWR (reflection coefficient) Source off: < 1.42 (0.17); Source on: <1.31 (0.13)
Power required 28 V ±1 V (automatically supplied by the Keysight 8970B N897X noise figure meter
Flange: UG-599/U