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The Radio Amateur Club of the TU Wien was founded in 1983. Since June 2014, the trustee of the club is Chris (OE1VMC). The club station is located at the Institute of Telecommunications in downtown Vienna, Austria. The institute is located in a six storey high building which has a flat roof 32 meters above ground level providing ample space for antennas. The Maidenhead locator is JN88EE47ME.

You can read about the latest activities of the club in our qrzblog.

The club is active on the waves ranging from the "Top Band" (160m wavelength) to the X-Band (3cm wavelength) and our logs are uploaded almost dayly to QRZ, LoTW, eQSL.

Our members share two things: Firstly, they are affiliated with TU Wien (or they were affiliated in the past). Secondly, they share their ham spirit and enthusiasm for ham radio.

The fotos below document the roof visit with antenna inspection on June 18, 2014.


Our Radio Amateur Club Station participated in the 2015 IARU-HF Championship during July 11-12, with the special call sign OE0HQ of the Headquarters-Station of the Austrian Amateur Radio Society (Results Database).

In the All Austrian Emergency Contest AOEC 2015 on May 1st, the club station was operated by Dieter OE8KDK and Chris OE1VMC. For the 40m, 80m and 160m bands, we have erected a tripple band fan dipole on the neighboring roof. The dipoles for 40m and 80m bands are in inverted-V configuration. The arms of the 160m band dipole are approximately Z-shaped ("Z-dipole"). 

The left photo (below) shows the OPs checking the guy rope of the dipole antennas. On the right, Dieter and Chris smile into the camera while briefly relaxing from the heat of competition. Further info about the HF contest: rules and previous scores: see here.

The photo below left shows the main mast which carries both a SteppIR DB36 Yagi antenna (covering HF bands from 40m to 6m) and a vertically polarized antenna with mast amplifier for the VHF/UHF bands.

On the photo below right, the 3.8m dish of our S-band satellite groundstation is shown (now dismantled). The ground station supported several scientific satellite missions. Among those missions were the MOST project and the COROT (COnvection, ROtation and planetary Transits, not operational anymore). Currently, the satellite groundstation is not operational and needs repair.

Main mast with SteppIR DB36 and VHF/UHF antennas Roof of the institute with satellite dish and main mast


SteppIR DB36 Yagi Antenna

This is a motor-controlled 4 element Yagi-Uda antenna with variable element lengths. The elements consist of two copper-beryllium tape conductors which are spooled in the element housing on the antenna boom.  The copper-beryllium tape is perforated which enables the use of a stepper motor to drive them with sprockets. This gives very precise control of each element length. The copper-beryllium tape is driven out into a support tube made of fiberglass. Two extra passive elements of constant length for the 6m band were added. Thus, it is a 6-element Yagi for the 6m band.

To assess the gain and directivity of the SteppIR DB36, the antenna is modelled with the software tool EZNEC+ v. 5.0 (by Roy W7EL). The element lengths of the antenna are configurable by the SDA100 controller. The SDA100 controller software features default configurations for three types of patterns: "forward beam", "reverse beam", and "bi-directional beams". First, the element lengths were read from the controller software and a Matlab function writes the corresponding wire geometry to an ASCII text file which is imported by EZNEC. The obtained simulation results for the default forward beam configuration at 7 MHz are shown below.

Top left: wire geometry for EZNEC model Top right: current distribution calculated by EZNEC
Bottom left: antenna pattern vs. azimuth Bottom right: antenna pattern vs. elevation


8335317 Last modified: 2017-09-17 12:16:12, 7901 bytes

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QRZ Logbook Summary for - OE1XTU
Latest Contacts for OE1XTU at QRZ.com
dedateband mode grid Country op
LY5TD 2018-01-19 80m FT8 KO24 Lithuania Rimas Jatulevicius
MM3AWD 2018-01-19 40m FT8 IO87 Scotland Scott Mcleman
IZ8EDI 2018-01-19 40m FT8 JN70 Italy GIUSEPPE COLUCCI
SP6TPF 2018-01-16 80m SSB Poland Krzysztof Augustyn
DK6VCO 2018-01-16 80m SSB JO33tj Germany Thorsten Reiners
HA3OC 2018-01-16 80m CW JN97mm Hungary Ferenc Szabo
RO7N 2018-01-16 80m FT8 KN97 Russia Valeriy (Val) Golovenko
IU1DSU 2018-01-16 40m PSK31 JN44ef Italy Davide Meirana
EA3IAZ 2018-01-15 40m PSK31 JN11is Spain Manuel Carrasco Serra
PA3DDP 2018-01-13 160m FT8 RR73 Netherlands Gerrit PLASMAN
6O6O 2018-01-10 30M CW JJ00aa Somalia Kenneth Opskar
6O6O 2018-01-09 40M CW JJ00aa Somalia Kenneth Opskar
F6EQZ 2018-01-09 160m FT8 JN19 France Jean DERVIEUX
G0BLB 2018-01-09 160m FT8 IO81 England Richard Baker
IK2XZE 2018-01-09 80m PSK63 Italy Luigi Riva

Book Totals: 5668 qso's   3251 confirmed Get a free logbook at QRZ.COM

United States Counties Award#1265
Granted: 2016-07-19 19:12:01   (OE1XTU)

  • 100 Counties CW
  • 100 Counties Mixed
  • 250 Counties Mixed
  • 100 Counties Phone
World Continents Award#1534
Granted: 2015-01-25 18:28:48   (OE1XTU)

  • 5 Band CW
  • 10 Meters CW
    12 Meters CW
    15 Meters CW
    17 Meters CW
    20 Meters CW
    30 Meters CW
    40 Meters CW
  • 5 Band Mixed
  • 10 Meters Mixed
    12 Meters Mixed
    15 Meters Mixed
    17 Meters Mixed
    20 Meters Mixed
    30 Meters Mixed
    40 Meters Mixed
    80 Meters Mixed
  • 15 Meters Digital
  • 20 Meters Digital
  • 40 Meters Digital
  • 15 Meters Phone
  • 20 Meters Phone
  • 40 Meters Phone
Grid Squared Award#1406
Granted: 2015-01-25 18:28:46   (OE1XTU)

  • 10 Meters Mixed
  • 15 Meters Mixed
  • 20 Meters Mixed
  • 40 Meters Mixed
  • 15 Meters CW
  • 20 Meters CW
  • 40 Meters CW
  • 20 Meters Phone
  • 40 Meters Phone
  • Mixed Digital
DX World Award#469
Granted: 2015-01-25 18:28:45   (OE1XTU)

  • 15 Meters CW
  • 20 Meters CW
  • 40 Meters CW
  • 15 Meters Mixed
  • 20 Meters Mixed
  • 40 Meters Mixed
  • Mixed Phone
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