PSK: Two sepak takraw categories

Two sepak takraw categories will be contested in the 9th National Sports Festival 2010 (PSK) involving seven contingents.
The matter was disclosed at the PSK sepak takraw team managers meeting held earlier this week at Jury Room Hassanal Bolkiah National Stadium in Berakas chaired by the President of Brunei Darussalam Sepak Takraw Association (Pestabaru), Pg Haji Ali Hassan Pg DSLJ Haji Abas.

The briefing was given by Pestabaru Deputy President Hj Md Noor Hj Hamid and Hj Mokti Hj Ghani and Pestabaru Secretary-General Hj Bakar Kassim.

The meeting was held to brief and discuss with the managers of each contingent about the technical issues of the sport and the tournament draw.

The two categories contested are Team and Inter-Regu. In the Team category, Temburong District, Royal Brunei Police Force Sports Council (MS PDB), Tutong District and Brunei Muara District will be playing in Group A while Belait District, Schools Sports Council and Royal Brunei Armed Forces Sports Council (MS ABDB) are placed in Group B.

Meanwhile, Belait District, Tutong District, MS ABDB, MS PDB, Schools Sports Council, Brunei Muara District, Higher Education Institutes and Temburong District will be against each other in the knockout Inter-Regu event.

All matches will be held at the Sungai Kebun Sports Complex starting June 27 (Sunday) till July 2 from 9am to 2pm.

PSK31 is a new digital mode:

designed by Peter G3PLX

that betters SLOWBPSK, an idea and implementation of Pawel SP9VRC

based on the RTTY mode of operation,

useful for live keyboard to keyboard QSO

that works at 31.25 bauds,

that uses varicode caracter coding what gives 50wpm,

easy to use and monitor,

that give very good copy under low Eb/No numbers and is thus suitable for QRP,

that instead of using FSK or on/off keying uses BPSK or QPSK with a Viterbi decoder,

that is available for free for many platforms, including Windows (c) with SoundBlaster type Soundcard,

and uses advanced DSP and narrow band (31 Hz!!) techniques.

PSK31 is not a digital mode that

will make Pactor, Pactor-2, Clover-II or Gtor obsolete,

offers error free links,

can be used to transmit files or acces mailboxes...

You can see also how much spectra they use. These images have been obtained with EvmSpec.

• PSK31 in bpsk mode.
• PSK31 in qpsk mode.

You can hear these modes here: Note that these files will be correctly decoded if feeded on the DSP board or SoundBlaster, that's why they are so lengthy.Note the preamble at the start and end of the transmission. If you only want to know how they sound, you can get the ADPCM compressed version (I haven't tested if they decode correctly).

• PSK31 in bpsk mode calling CQ. Compressed here.
• PSK31 in qpsk mode calling CQ. Compressed here.

A basic approach to understand and design a PSK31 modem is here, by Peter G3PLX. See also articles section