VHF/UHF/SHF Committee

VHF/UHF/SHF preparing South Africa Conference

South Africa Conference  (Sun City, 12 - 19 August 2011)
All VHF/UHF/SHF papers for the conference can be found in the South Africa Homepage.

Please download them as a ZIP archive and unpack them.

Preparing a – Pre-conference - Web Conference
Having sifted through the documents, I have planned three web conferences to address the following subjects:

14 June 2011, 16:00-18:00 UTC  6m Bandplan
22 June 2011, 16:00-18:00 UTC  Contest
27 June 2011, 16:00-18:00 UTC  Any other business

All VHF managers are cordially invited to participate. Please request the link.

Streaming the Conference in the Web

All meetings of the C5 Committee will be made available as audio streams in the Internet. In this way, all VHF managers unable to attend in person can still follow the events. Right now we are working to meet the local technical requirements.

Link addresses will be published prior to the start of the conference.

Report from IARU Region 1 Satellite Coordinator

Current active OSCAR satellites

There are currently 8 satellites carrying voice transponders:

  • AO7 – linear transponders
  • AO27 – FM transponder
  • FO29  - linear transponder
  • SO50 – FM transponder
  • AO51 – FM transponders
  • VO52 – linear transponder
  • SO67 – FM transponder – launched since my last report
  • HO68 – linear and FM transponders – launched since my last report

The ISS has a number of different operational modes which are activated whenever possible on the 2 metres and 70cms bands. Additionally there are than fifteen cubesats currently active transmitting a variety of data and CW beacons and a number of Russian satellites which also use frequencies within the 70cms band for their data downlinks.

2009 UHF/Microwave IARU Region 1 Contest

Polski Zwiazek Krotkofalowcow - Polish Amateur Radio Union(PZK) will be sponsoring the 2009 IARU Region 1 UHF/Microwave Contest

Below is the invitation from PZK and the related documents

Stratospheric Balloon Passepartout3

A collaborative project by the Austrian space forum (OeWF) and the Austrian radio amateur association (OeVSV).

Planned Start : Saturday, August 22, 2009, 08:00 UTC   |  Observatory Lustbuehel, Graz-Waltendorf, JN77RB

Passepartout IIc Picture

In case of bad weather conditions (strong high winds) apostponement of the start to Sunday, August 23, is possible. Passepartout3 will be active on the following frequencies:

144.390 MHz, OE9HFV, APRS(tm) beacon every minute,    MicroTrack, 0.3 W, Garmin GPS 18

432.500 MHz, OE0S, APRS(tm) digipeater and beacon (1 min), OpenTracker2m, TH-7, 0.5 W

The planned maximum height will be more than 30 km, as achieved with previous flights. The maximum area within direct sight will have a radius of more than 600 km. From a height of 20 km the radius is more than 500 km, covering an area reaching the following cities: Wroclaw, Krakow, Oradea, Sarajewo, Firenze, Milano, Zuric,  Nuernberg, Dresden. In this area the reception of the beacons and the access to the digipeater should be possible for a period of half an hour to one hour. Due to high winds the area might be somewhat  shifted. 

All OMs are invited to make QSOs via the digipeater, preferably using the APRS(tm) Message Format. Because of the large area covered and the restricted power supply all users are asked to restrict the messages to report, QTH locator, and name (probably also the town). For the QSO over the largest distance a diploma will be available for the two stations involved.
The beacons will transmit position and height of the balloon with a time stamp and the data will be available real time in the internet (e.g. http://aprs.fi/). OMs, who can provide an Igate on one ore both frequencies are very welcome, in order to achieve a complete documentation  of the flight track.