Keysight 8494B/001 Manual Attenuator: 11dB/1dB, 18 GHz, 1W, Type-N(f), 8494x Series
Keysight 8494G Programmable Step Attenuator: 11dB/1dB, 4GHz, SMA(f), 24VDC, 8494x Series
Keysight 8496H Programmable Step Attenuator: 11dB/1dB, 18GHz, SMA, 24VDC, 8494x Series