Seems like I have the "winter" station up and running. The U3S thingy has been put back in the obsolete pile. Now running the TS-590S with a small class D amp behind it. Estimated EIRP is about 750 mW (+/- 20 dB) up a bit from the U3s thing.
Currently running WSPR, +1488 offset, 29% duty cycle, random. My plan is to run it for 24 hours or so like this and then switch over to FST4W-120.
I am listening for WSPR and FST4W-120 as usual.
It will be interesting to see if the extra 3 dB or so power will make much difference.
73,
Larry - W7IUV
central WA - DN07dg