Thsi is a video of a QSO on the 10m band with Spanish station EA7GYU (operator: Toni)from Marbella.
I also tested the automatic antenna tuner on the 20m band, and I made a QSO with German station DK3BK, who gave me a signal report of 56. I don't have the video because my camera had run out of batteries, but I got this nice eQSL to confirm the contact. I think this is a pretty remarkable result for such a short whip (2.5m) and a counterpoise wire. I will also try with slightly longer whips such as the AT-271 when I have the chance to do it.