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Re: Decoding problem

Hi Mike, have you checked that the audio input device default sample rate is 48kHz ? Also using the same CODEC for JT65HF and WSJT-X at the same time may cause audio issues since they request

By Bill Somerville · #1155 ·

Re: Decoding problem

FYI...There is a JT9 signal just below 2600Hz too...with 2 JT65 sigs for a total of 3. 73 Mike W9MDB

By Mike Black · #1154 ·

Re: Decoding problem

Yes...he can decode my files just fine. Something must be weird in his audio chain with WSJT-X. 73 Mike W9MDB From: "dmalcolm24@... [WSJTX]" To: WSJTX@... Sent: Wednesday, December 9,

By Mike Black · #1153 ·

Re: Decoding problem

Mike, I ran the fileon my WSJT-X v1.6.0-rc1, without being able to decode anything. I only saw two traces for possible decode. Have you tried it the other way? You record a sample wav and try it

By Dan Malcolm · #1152 ·

Decoding problem

Helping somebody with their WSJT-X installation. His WSJT-X is not decoding much of anything. JT65HF is perfectly happy running side-by-side. Tried both 1.6rc1 and current 1.7.0 version with no

By Mike Black · #1151 ·

Re: WSJT-X version wsjtx-1.6.0-rc1 Low SIgnal Decode Performance

Bill, Thank you. Yes, after several days of operating at teh50% point, I see not significant difference. I will try do decodes with both 1.5 and 1.6 to see if there is any difference. I would also

By N7RJN@... · #1072 ·

WSJT-X 1.7 Dev on Mac OS-X

Has anyone done any evaluation or testing with version 1.7 Dev on OS-X? Are there any compiled versions of v1.7 dev available for testing or evaluation? 73, Bob

By N7RJN@... · #1071 ·

Re: is there a program ?

thank you Bill i think Greek is similar to Linux. hi david/wd4kpd -- God's law is written in stone...all else is negotiable.

By David Michael Gaytko // WD4KPD <wd4kpd@...> · #1070 ·

Re: is there a program ?

There is one built as part of the development build but t is not shipped in the final installer. If you build WSJT-X yourself the jt65sim, jt9sim, jt4sim and, wsprsim tools are

By Bill Somerville · #1069 ·

is there a program ?

wonder if there may be a program out there that would generate and record a jt65/jt9 signal of a desired strength ? david/wd4kpd -- God's law is written in stone...all else is negotiable.

By David Michael Gaytko // WD4KPD <wd4kpd@...> · #1068 ·

Re: define

zero offset adds a constant amount onto all values, gain multiplies each value by a constant. The two constants are set by the sliders. Another factor is that the final values have to be mapped onto

By Bill Somerville · #1067 ·

Re: define

Bill... tks reply, but still have questions on setup. what is happening when this Bias is applied ? i am trying to figure out how to limit the larger signals, and still be able to discern the

By David Michael Gaytko // WD4KPD <wd4kpd@...> · #1066 ·

Re: WSJT-X version wsjtx-1.6.0-rc1 Low SIgnal Decode Performance

Except waterfall width still affects the bandwidth being decoded, right? 73 Mike W9MDB

By Mike Black · #1065 ·

Re: WSJT-X version wsjtx-1.6.0-rc1 Low SIgnal Decode Performance

Having the Rx gain slider at around 3/4 setting is not excessive and I doubt that change will make a significant difference. We find some users have very high or low level audio and expect the slider

By Bill Somerville · #1064 ·

Re: WSJT-X version wsjtx-1.6.0-rc1 Low SIgnal Decode Performance

Bill, Thank you. Yes, the 48KHz audio sample rate is the first thing I checked. I have the Rx gain control set at about the 45dB point on the slider, which is were I had it for version 1.5. I will

By N7RJN@... · #1063 ·

Re: WSJT-X version wsjtx-1.6.0-rc1 Low SIgnal Decode Performance

Hi Bob, a common cause of poor decode performance is not having the default sample rate for your sound devices set to 48kHz. Other than that, you must set the levels correctly since too much gain

By Bill Somerville · #1061 ·

Re: define

Not quite sure what you are referring to here. The slider to set the zero offset is bias applied to the waterfall and/or the spectrum display. The zero offset and gain are setting the offset and slope

By Bill Somerville · #1062 ·

Re: WSJT-X version wsjtx-1.6.0-rc1 Low SIgnal Decode Performance

Oh, and yes I have checked my clock. It is normally within +/- 0.1 seconds of actual time. 73, Bob - N7RJN

By N7RJN@... · #1060 ·

WSJT-X version wsjtx-1.6.0-rc1 Low SIgnal Decode Performance

I have been using WSJT-X 1.6.0-rc1 for nearly a week now. During this time I have noticed that the JT65 decode performance is not quite as good as I expected and not as good as version 1.5. Signals

By N7RJN@... · #1059 ·

define

what exactly does "zero" define in the spectrum/waterfall ? david/wd4kpd -- God's law is written in stone...all else is negotiable.

By David Michael Gaytko // WD4KPD <wd4kpd@...> · #1150 ·

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