My usual DX on 23 cm is 136 km during the monthly activity contest. Last Sunday there was the 50th anniversary of the Vecchiacchi V/U/SHF contest and I wanted to pay my tribute to the event.
All I could do was to spend the last contest hour on the air on 23 cm SSB. I was logged to the on4kst chat and got a request from a station 368 km away.
My 23 cm setup consists of a transverter with about 15 W out, 5 metres of SAT-TV coax and a 23 cm Yagi on the balcony, with "hand-rotor". The DX station was checking aircraft positions so that we could attempt an Aircraft Scatter QSO. At the first try my antenna was beaming too North. Then I adjusted it to what should have been the right direction and ... BINGO! The QSO was completed. We used three airplanes, that made a very long opening on our path.
Luckily I guessed how much off-frequency my transverter is!!
It is amazing how well AS works. Much similar to MS, but much more predictable!