This is looking more like a WSJT-X problem. I set my MIDI control to 48000 and 
fired up cocoaModem. Was able to easily send a 1kHz test tone and then send CQ. 
Going back to WSJT-X failed miserably. No amount of fiddling with the VOX gain 
or Mic drive control OR the controls on the front of the Tascam would make it 
work. 

Also, the WSJT-X Audio tab has no place to set the sample rate or bit depth - 
on my version, anyway. I'll re-try the WSJT group. 

Will post here if I get it resolved. I'm about ready to just blow it off and 
keep things at 41000. Arrghhh.....



> On Jul 5, 2015, at 11:17 PM, Jim Brown <[email protected]> wrote:
> 
> Hi Jim,
> 
> I'm only guessing, and I know nothing about the Apple world, but I'll do my 
> best. There are two communications speed settings at play. One is the sample 
> rate and bit depth for the USB sound card. That is set on the Audio Tab of 
> WSJT-X, and wants to be 16-bit 48 kHz. The other is communications between 
> WSJT-X and your radio for Rig Control via RS-232 (and perhaps a USB adapter). 
> 38,400 is as fast as the K3 goes, so that's what you must choose, and both 
> the K3 and the radio must have the same setting.
> 
> As for going into TX -- I use VOX for ALL modes except CW, and it works 
> great. The gotchas are VOX Gain (a menu setting) and Line In Gain (set by the 
> Mic Gain control when the K3 is set for Digital modes. Perhaps all you need 
> is more Line Gain and/or VOX Gain. That's happened to me many times when I've 
> changed setups. The Line In should be set for five bars of ALC, then set VOX 
> Gain to activate TX.
> 
> If this doesn't get you going, I suggest that you ask again on the WSJT 
> reflector. Some of the developers of WSJT-X monitor it, and may be able to 
> help. Who knows -- there may be a bug they need to squash. When I reported 
> rig control issues with the K3 with a WSJT-X Beta, they thanked me, and 
> several months later it seems to work.
> 
> 73, Jim K9YC
> 
>> On Sun,7/5/2015 9:18 PM, James Bennett wrote:
>> Nobody??? Am I the only K3 owner using a Tascam sound card and a Mac to run 
>> WSJT-X??
>> 
>> Jim Bennett / W6JHB
>> Folsom, CA
>> 
>>> On Jul 4, 2015, at 12:30 PM, James Bennett <[email protected]> wrote:
>>> 
>>> I posted this on the WSJT-X Yahoo group and still no resolution. Hoping 
>>> that perhaps someone on this reflector might have some thoughts on the 
>>> problem. It isn’t a real “problem” per se, as I can certainly use my system 
>>> as it is, but just wondering about this “quirk”. Here is my post:
>>> 
>>> "I just recently upgraded from WSJT-X 1.4.0 to 1.5.0 and have a question 
>>> about something in the User Guide. I'm running on an iMac, OS X 10.10.4, an 
>>> Elecraft K3, and my sound card is a Tascam US-125M. I am able to use the K3 
>>> and the new version of the software but have an issue with the 
>>> documentation procedure….
>>> 
>>> The WSJT-X user manual says to use the Apple Audio MIDI Setup utility to 
>>> configure the sound card to 48000 Hz, two channel, 16 bit. I have been 
>>> using the above configuration at 41000Hz with no problems. When I try 
>>> running at 48000 Hz, the radio does not go into transmit mode. If I switch 
>>> it back to 44100 Hz, it works OK. The specs for the US-125M indicate that 
>>> it should work up to 48000 Hz. When set to 48000 Hz, I’m able to get the 
>>> usual decodes, but can’t transmit. I’ve got it set for the K3/KX3, and CAT 
>>> control.
>>> 
>>> Any idea why I'm limited to 44100 with this configuration and why 48000 
>>> fails to work?"
>>> 
>>> Jim / W6JHB
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