WSPR is a mode which was purposely designed for QRP Propagation Study. The whole point is to radiate a known level constantly repeated signal and analyse the resultant Spots of that signal by disparate stations around the globe.
"But hang on there I see that T1WIT is getting Spots from America I had better turn up the Power until I do" is the logic often used. No propagation to W1LOUD using 100mW means that conditions are not favourable at that time, a valid piece of Data for Propagation Study. Turning up the Power until you get results invalidates all Data, as does not knowing what your Output Power really is.
Personally I can set a stable measured 10mW Output from my 100W Commercial rigs if I need to. I would much rather build a QRP Radio that consumes a few Milliamps for a few Milliwatts Out.
Ignoring the Computer consumption, on WSPR we have many stations with an HF rig consuming 60 to 100 Watts to produce 100mW of RF. What makes me smile is the fact that a Commercial Step Attenuator is then added to the set up to dissipate the power just generated.
The Elecraft AT1 or some other commercial Attenuator is listed in the equipment used as a modern 'badge of honour'.
Well at least the AT1 is available as a kit so you can have had a hand in this Modern Farce.
