Also FT8 from Burundi!

The team is ready for this new mode. We’ll be active also on FT8, more infos coming soon !

Read with us the explanations about the new mode by the “guru” and Nobel Prize, John Taylor:

“Steve (K9AN) and I have developed a potential new mode for WSJT-X. We’re calling the mode “FT8” (Franke-Taylor design, 8-FSK modulation).

FT8 is designed for situations like multi-hop Es where signals may be weak and fading, openings may be short, and you want fast completion of
reliable, confirmable QSOs.

Important characteristics of FT8:

– T/R sequence length: 15 s
– Message length: 75 bits + 12-bit CRC
– FEC code: LDPC(174,87)
– Modulation: 8-FSK, keying rate = tone spacing = 5.86 Hz
– Waveform: Continuous phase, constant envelope
– Occupied bandwidth: 47 Hz
– Synchronization: three 7×7 Costas arrays (start, middle, end of Tx)
– Transmission duration: 79*2048/12000 = 13.48 s
– Decoding threshold: -20 dB (perhaps -24 dB with AP decoding, TBD)
– Operational behavior: similar to HF usage of JT9, JT65
– Multi-decoder: finds and decodes all FT8 signals in passband
– Auto-sequencing after manual start of QSO

*Comparison with slow modes JT9, JT65, QRA64:* FT8 is a few dB less sensitive but allows completion of QSOs four times faster. Bandwidth is
greater than JT9, but about 1/4 of JT65A and less than 1/2 QRA64.

*Comparison with fast modes JT9E-H:* FT8 is significantly more sensitive, has much smaller bandwidth, uses the vertical waterfall, and
offers multi-decoding over the full displayed passband.

*Still to come, not yet implemented:* We plan to implement signal subtraction, two-pass decoding, and use of “a priori” (already known)
information as it accumulates during a QSO. 73, Joe, K1JT”

Briefing of the team at Ham Messe

Hallo guys!

This is an official picture (by Roberta, I2VGW/XYL) Location: During the Ham Messe in Friedrischafen, part of the team, made a short briefing to speak about our next dxped, low bands setup (thanks F2DX and F2JD), new system of antennas (thanks IZ2GNQ), new system of log search real time (thanks IK2VUC),  etc. etc. You can see in the picture also ON7RN, F1HRE, YO8WW, I2VGW and IZ8CCW.

Play the joker with Propagation Prediction

As with our previous dx-pedition, we have the pleasure of having K6TU support, with his special propagation prediction. Going to the link https://www.k6tu.net/?q=node/add/dx-prediction-9u4m you can have the prediction from 10 to 80 mt from your Country to Burundi. Thanks to Stu K6TU to give anyone a customized prediction specifically for our DXpedition!