HP E4406A VSA Series Transmitter Tester (7MHz-4.0GHz, s/n US39480713) with Option BAH, as shown. It is in good working condition, and comes with a Calibration Certificate (Calibration Date: Jun 13, 2008; In Service Date: Feb 17, 2009, Calibration Due Date: Feb 17, 2010). It comes with a document set on CD, as shown.