HP 8920A with options: 002(spectrum analyzer / tracking generator), 003(rear rs-232 and GPIB ports), 004(audio signaling), 005(extra memory). This HP 8920A is refurbished with wear parts replaced, calibrated with full performance evaluation data and includes a 180 day warranty. Inquire by calling Amtronix at  (716-763-9104) or email lab2(at)amtronix.com