ARLA/CLUSTER: Testes no modo ROS entre os EUA e Espanha

[João Gonçalves Costa]

FCC Spread Spectrum tests off to a good start

At 0052z on 1/2/2012, after a CQ call from WF9XJD, Jose Ros EA5HVK, inventor of the ROS data and Opera beacon mode's, made the opening decode of the first FCC - SS authorised experimental Station, WF9XJD on 10.132 MHz at a rock bottom level of -22dB S/N

With worsening conditions and after a qsy to 7.055, the qso was completed using MF-4 mode, very close to the decode limit, with a closing acknowledgment from Phil, as received by Jose, the 19 dB S/N is the average level of the reception.

'RX4: 01:14 @ 2,0 Hz: EA5HVK de WF9XJD M Joe. 1st QSO with WF9XJD Experimental Station.nee-V 2ib, meters. thanks jose eis wonIjful mode you have created. <BAD-CRC> -19 dB 8319 km @ 300 7.055 Mhz'

Taking advantage of the, north south, propagation, a 10 minute QSO with YV5MM followed at substantially higher signal levels , later Dx contacts with ZL2AUB and UA1WBV where also made.

The elegance of the ROS Spread Spectrum based mode was proven by the initial qso , that took place under the noise at the limit of the mode, with nothing more in use than a dipole in Spain and a inverted V in Texas.

A further eight or more experimental stations are due on the HF bands over the next week's for what promises to be history in the making , taking the first steps to clarify the data mode designations, applicable to the USA ham radio data mode operators.

Graham, G0NBD

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