WW EME DUBUS-REF Contest 2011: 10GHz & up. OK1KIR reports: 10GHz: 12.3. at 12:26 F2TU only O/O due to a decrease in output pwr. Due to that failure and resulting repair missed VK3NX(hrd) and JA6CZD. After repair with full pwr (over 35W in feed) at 15:44 F1PYR 549/559 #54; 15:56 ON5TA 549/559; 16:06 ES5PC 549/569; 16:16 G4NNS 559/569; 16:22 HB9SV 559/579; 16:48 PA0EHG 569/559 #55; 17:16 R3YA 559/559 #56; 17:20 F5JWF559/579; 18:03 IQ4DF 579/559; 18:33 IZ2DJP M/O # 57; 19:03 OK1CA 549/569; 19:45 WA6PY 549/559 and 22:02 LX1DB 579/569. 10GHz: 13.3. first echoes already at elevation of only 1.7°. During libration of about zero (spread less than tens of Hz) at 12:38 OK2D M/O #58. It is our smallest rig worked on 3cm EME (1,2 m/17 W tropo rig with H polarisation !). Close to the contest end suddenly at 21:54 W7CJO 579/579 with obvious great signal. In total 16 QSOs on 10GHz. F2CT & 9A5AA only CNR ( nil/529) and hrd 539 by DF9QX. Measured noises G/CS 4,8 dB; Sun 18,2 dB (SF 120), Moon 2,7 dB (in first quarter). On 14.3. at 19:20 F2TU 549/569 and at 20:00 in sked 9A5AA CNR (nil/529). On 15.3. at 1903 perfect 2xSSB s LX1DB 55/55 at Doppler about zero. Finally, when Dragan repaired TX, at 19:44 9A5AA O/O # 59 and DXCC 23 on 10 GHz. 24 GHz: Sunday,13.3. at 15:20 LX1DB 559/559 ! very easy and fast QSO regardless Moon was only 2dB due to clouds. Tonda & Vlada for OK1KIR www.ok1kir.cz