At about 0835z I went on 17m FT8 with 2.5W and the tiny indoor loop. It is now 0932z. So far, 2 stations have spotted my QRP TX with the furthermost being UR7IM (2631km) and on RX 28 stations spotted here with the furthermost HL5BLI (9059km) in South Korea.
I remain amazed how well this simple QRP set-up works. Later, if I have the energy, I may try thicker wire for the loop. Somewhere in the garage is the roll of central heating pipe that I might use. Failing that, just thicker copper wire or a parallel stretch of copper wire might make things even better.
UPDATE 1208z: 89 stations spotted so far on RX.
UPDATE 1430z: 138 spots of me in 5 continents today on 17m FT8 RX. 4 spots of my QRP on TX.