A number of us are using E4406A 7MHz - 4GHz testers. A very useful tool for uWave work. These look very similar to a PSA spectrum analyser, but are available for a fraction of the price circa £300 on ePay. The spectrum analysis, which is actual a FFT analyser is limited to a 10MHz span. Even with that it is very useful with BW down to 1Hz, and obviously a low noise synthesiser.
What I have been looking for for some time, is a program to do lots of 10MHz plots, to do a wideband spectrum.
Bertrand Zauhar, VE2ZAZ would appear to have done this. http://ve2zaz.net/InstrCtl/InstrCtl.htm
Not yet tried, but it sounds good!
The one way these go faulty is the PSU. Anyone found a solution to a failed PSU?