Just tried loading up the coax to my 2m big-wheel antenna via my z-match on 40m (7.074MHz). 18 spots of me already after about 10 minutes.
UPDATE 1612z: 24 stations have spotted my 40m QRP FT8 so far.
My 10mW ERP WSPR from the earth-electrode "antenna" in the ground was turned on at about 2114z. 7 stations have spotted me.