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Currently testing JT9-2 on 137420, transmitting
during even 2-minute slots.
73, Markus (DF6NM)
Sent: Saturday, October 27, 2012 10:26 PM
Subject: Re: LF: JT9: A New Digital Mode for MF and
LF
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 ;-)
He released the mode 2 days ago and a
first update yesterday.
Now it really gets complex which mode to
choose. WSPR, Opera, JT9...
But as a digital mode for LF i gues JT9-30 is
the most promising at all.
73,
Stefan/DK7FC
--
http://g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
https://sites.google.com/site/sub9khz/
http://qss2.blogspot.com/
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