I have been looking for a frequency counter for some time now and split between buying a kit that goes well into microwaves or seeing what comes on eBay. Finally a decent range one was advertised and I won it; it arrived today.
This guy counts from 10Hz to 2.7Ghz and the reason I got something with this range is it will hopefully prove that I am at least outputting something from the Pluto when I finally get round to setting up my QO100 station. Otherwise it is generally useful. It has a 10MHz internal clock running from an oven-ready crystal (sorry, a crystal in an oven!) so there is scope for feeding in a GPSDO signal if needed, although for my purposes that is probably not a requirement. Thus far, for a quick check it reads test transmissions on 2m and 70cm from a handheld accurately.
I have a digital oscilloscope on order (and will then sell my two CRT based ‘scopes), I have power supplies (only to 30V DC though), so I just need a waveform generator for general messing about. Not sure I need any RF source as I can use the Pluto.