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| Subject: | Re: LF: JT9: A New Digital Mode for MF and LF |
| From: | Roger Lapthorn <[email protected]> |
| Date: | Sat, 27 Oct 2012 21:26:31 +0100 |
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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 On 27 October 2012 21:00, Stefan Schäfer <[email protected]> wrote: Oh, now Joe has lifted the secret ;-) -- http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk https://sites.google.com/site/sub9khz/ http://qss2.blogspot.com/ |
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