Yesterday I realized that my ears are incapable to pick up a weak signal from a S8 noise floor. That makes it difficult for weak CW or SSB signals. I use more and more digital modes like JT9-1 and JT65. They have no problem with a higher noise floor. Yesterday I spotted G7CNF on 20m with 10 mW. -24 dB. We can’t hear such signals with the human ear. Thanks to the increasing nowadays technology.