This is exciting news being a 2-way mode, especially as it is 9-FSK, so doesn't need a linear PA. With bandwidths as small as 0.4Hz for the long version, no-one will be complaining about how much bandwidth all this digital stuff takes. Unlike OPERA, the software will be well documented and open source.

There is a danger that, with too many digital modes now available, the activity may be spread too thinly, a point Mal raised some time back I believe Somehow though I suspect JT9 will rapidly become the de-facto digital mode on 472kHz and 136kHz.

I hope that one of the internet databases - PSK Reporter I guess, or perhaps an equivalent to WSPRnet - will be able to display JT9 activity as this was one of the great bonuses with WSPR beaconing.

I may give it a go on 500kHz next week.

73s
Roger G3XBM





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