10m WSPR (500mW)

Once again I am giving 10m WSPR TX a go using the stand alone WSPR beacon and the indoor loop antenna. This leaves the PC free for 6m FT8.

Theoretically, WSPR should be about 10dB better with weak signals than FT8. However, it takes 120 seconds (nearly) for a transmission burst whereas FT8 is only 15 seconds (nearly). I am not sure how little of each is needed for a successful decode.

UPDATE 0930z:  Spotted twice by OZ7IT (853km).

UPDATE 1037z: Now spotted by HB9TMC (905km).

UPDATE 1300z: Now getting spots by OE9GHV (871km). I notice the HB9 is giving me up to -4dB S/N, which is massive for 500mW to the indoor loop. Also being spotted by OE9HLH and DL4TOM/RX. I am getting 10m WSPR spots from more stations than I expected.

Unique stations spotting my 
10m WSPR today. Quite a 
few have copied me multiple times.

UPDATE 1354z: So far today, my 500mW WSPR beacon on 10m to the tiny indoor loop in the shack has been spotted by 9 different stations. Definitely more 10m WSPR activity than I was expecting.

UPDATE 1436z: Just after 1400z OZ7IT was getting my 500mW at 0dB S/N. On a quiet band with no man-made noise, this suggests he might have copied me on the indoor loop if I was running 0.5uW!! (yes half a microwatt!).  Incredible.