Thanks for the explanation! That's a pretty easy fix at my end. I've found over time that my SignaLink USB has a bit of a high frequency issue when I try to use JT9 at the higher end of the passband, so moving the signals down helped in that regard. Simply moving them down a bit farther should eliminate that problem!
73 Doc Dave 'Doc' Corio Vice President, McKean County American Legion Riders http://legionriders.wix.com/americanlegion Look Twice - Motorcycles are Everywhere! On 1/13/2016 7:51 PM, Bill Somerville wrote: > On 13/01/2016 17:35, Dave 'Doc' Corio wrote: >> With the past several versions, since 6390, I have noticed when in >> JT9 mode on HF, the "Decode" indicator remains active into the next >> minute. This varies between :03 and :33 seconds into the following >> minute. There does not seem to be a pattern or even a similarity between >> one decode and another. >> >> This does not seem to affect the actual decoded signal, except to >> perhaps delay it a couple of seconds. The decode indicator becomes >> active at :50 into the minute and decoded text appears usually between >> :53 and :58, however the decode indicator remains "lit" sometimes up to >> :33 of the following minute. >> >> I only see this anomaly when in JT9 mode. It does not occur when in >> JT65 or JT65+JT9. I have Decode set to "Fast", however it also happens >> when Decode is set to "Normal". >> >> I do have different JT9 and JT65 frequencies set. For example, to >> operate JT65 I use 14.07600, and for JT9 I use 14.077500 as VFO >> frequencies, in order to place the JT9 signal closer to the center of >> the passband of my SignaLink USB. > Hi Doc, > > the issue is the behaviour of the JT9 decoder when there are JT65 > signals in the pass band. You can demonstrate this by switching to > JT9+JT65 mode and setting the lowest JT9 frequency to 600Hz with that > WAV file you have posted. > > You need to either move up the band a bit to eliminate JT65 signals when > operating JT9 or use dual mode and set the lowest JT9 frequency marker > carefully. > > The JT9 decoder may well get some attention once the current JT65 > improvements are put to bed but making it immune to disruption by JT65 > signals may not be feasible without actually doing most of the work that > the JT65 decoder has to do before attempting JT9 decodes and that is not > very practical. > > 73 > Bill > G4WJS. > > ------------------------------------------------------------------------------ > Site24x7 APM Insight: Get Deep Visibility into Application Performance > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > Monitor end-to-end web transactions and take corrective actions now > Troubleshoot faster and improve end-user experience. Signup Now! > http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 > _______________________________________________ > wsjt-devel mailing list > wsjt-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/wsjt-devel > ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
