I have been doing some recent Fox Hunts with Jim Vignali (W5VIG) and he introduced me to the TinySA spectrum analyzer. It is truly an amazing piece of equipment. It has not been that long since it would have taken a box the size of a suitcase to perform what this little device will do. And at only about $150 it is very budget friendly too. Take a look at it and see what you think. Here is a link to their Wiki Page (here) website and here is a link to the PDF operating manual (here).