Short Wave Radio classes

During the Winter Term 2016/2017 four groups of 2-3 students participate in the short wave radio classes (LVA 389.030). After the lectures on HF propagation and antennas, radio block diagrams, modulation and coding, we enter the OE1XTU shack for gaining some real-world experience. We demonstrate J3E (aka SSB), A1A (aka CW), and various digital communication forms. The foto below shows Angelika and Valentin practicing their CW skills with the paddle: CQ CQ DE OE1XTU …

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X-Band activity on Dec 18, 2016

Today was the last microwave activity day of the year. Vienna was cold and somewhat foggy. Nevertheless, OM Gerald OE1GAQ, Taulant, and OM Chris OE1VMC withstood the creeping cold on the institute’s roof for two hours and OE1XTU made three SSB voice contacts on the X-Band at 3 cm wavelength (10368.1 MHz +/- 6 kHz, H-Pol.) using 0.25W Tx power and 16dBi horn antennas. The OE1XTU transceiver was identical to the setup used on Sep 18 and yields 40 dBm EIRP.

Below left, you see the original paper log and on the right-hand side, the QSL card from OM Gerhard OE1TGW.

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Storm damaged the DB36

During the night from Thursday Dec. 01 to Friday Dec. 02, there was heavy weather with wind speeds up to 120 km/h. Unfortunately, the resulting torsional oscillations of our pneumatic BigLift mast caused too strong forces for both the mast itself and the fiber glass tubing. The mast is now leaking air and the SteppIR DB36 reflector element cracked at two places near the end of the boom. Likely, the copper-beryllium tape is undamaged because the SDA100 controller was set to 14.100 MHz. Thus, the crack in the tubing was far away from the CuBe-tape. Currently, we are preparing the repair of the reflector element and replacing the broken mast, but it will take at least until summer 2017.

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