[Elecraft] K3S/USB Cable/Mac mini/WSJT-X

[David Herring]

If it works in the afternoon and not in the morning, it is possibly a temperature related anomaly.  Unclear which hardware component is the cause, but possibly not a driver problem per se. 

Have you tried slowing the baud rate down to 19200 when it's failing to see if it will work at the slower speed?

I have run a K3 as low as 9600 to perfect effect.

73,
David - N5DCH



> On Jan 26, 2021, at 8:02 AM, Richard <flathat at comcast.net> wrote:
> 
> Doug,
> 
> Thought I was home free last night (Jan 24). My final recipe was this:
> 
>     RADIO Panel:
>       Rig: K3s
>       Poll Interval: 1 s
>       CAT Control
>            Serial Port: /dev/tty.usbserial-A60092F3
>            Serial Port Parameters
>                 Baud Rate: 38400
>                 Data Bits - Eight
>                 Stop Bits - One
>                 Handshake - None
>                 Force Control Lines - both blank
>       PTT Method - CAT
>       Mode - Data/Pkt
>       Split Operation - None
> 
>     AUDIO Panel: USB Audio CODEC at computer and WSJT-X
> 
> The PWR slider is set to produce ALC of 4 solid bars and 5th bar fluttering.
> 
> I spent four or five hours working DX with it on 30-meter FT8 last night, and that setup worked PERFECTLY every time: Transmit start and Transmit stop times right on the money. I mean, it was PERFECT!
> 
> I thought I was home free. I took screen shots of every Preference panel, the Mac Sound thing, even the Audio MIDI Setup panel in the Mac mini.
> 
> BUT! When I fired it up this morning (Jan 25), it was right back to starting Transmit late and not coming out of Transmit… at all. I have to tap the XMIT button to stop it. What the hell??? What could change overnight? I didn’t touch anything when I shut down last night or when I fired up this morning.
> 
> HOWEVER, as the afternoon and evening arrived, those symptoms went away and the setup was perfect again!
> 
> MORE HOWEVER, This morning, Jan 26, the symptoms were back again. I’ll take another look this afternoon, but this is getting spooky.
> 
> ANY and ALL ideas and suggestions will be MOST welcome, up to and including (if absolutely necessary), replacing the driver.
> 
> Cheers,
> 
> Richard Kunc - W4KBX
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to david.n5dch at gmail.com