Hp8970 noise figure meter 10 to 2047 Mhz
great if your building rf preamps and optimizing them Simultaneous noise figure and gain measurement Easy characterization of amplifiers and frequency converting devices This unit has the option to go to 2GHz Fully functional . no longer needed I have a much newer unit sold without noise source, you can buy them on the net or on ebay photo shows application of testing a preamp for specification of noise and gain. amp and noise source are not part of the auction