[Elecraft] K3 unexpected TX after iMic + CocoaModem

[Joe Subich, W4TV]

What is your setting for CONFIG: PTT-KEY?  Set it to OFF-OFF and see
if your problem doesn't resolve itself.

73,

    ... Joe, W4TV


On 2/16/2014 8:15 AM, Tighe Kuykendall wrote:
> I should have added that when the shack MBP is connected to the K3 and I
> attempt rig control using RUMLog, it communicates with the K3 and
> receives info such as freq even though it's in TX.  So there's
> communication there, I just can't stop the TX.
>
> Tighe
>
>
> On 2/16/14, 8:01 AM, Tighe Kuykendall wrote:
>> Strange issue and haven't found much by searching.
>>
>> I use a MacBook Pro with my K3 and KX3.  It had worked fine for rig
>> control and with the K3/P3/KPA utilities.  I added an iMic audio
>> interface (bought it for the iPad and was experimenting) and setup
>> CocoaModem for use with the KX3 to do digital modes.  When I connected
>> the MBP back to the K3, any type of USB activity for rig control or the
>> K3/P3/KPA utilities causes the K3 to go into TX which can't be stopped
>> except by unplugging the USB from the MBP.  If there's no USB control
>> activity with an app, the K3 works normally.
>>
>> I simplified the radio down to just the K3 with no other accessories and
>> it still happens.  KPA utility works as expected with the KPA, even with
>> the K3 powered ok and it going into TX.  I checked for grounding issues
>> and reseated all of the serial cables.  The USB ports work normally for
>> everything except interfacing to the K3.  I tried a different MacBook
>> with the K3 and it works fine, so it's something with the MBP side of
>> the USB connection on my shack laptop.
>>
>> I then took a questionable troubleshooting action to test K3
>> communications, which I had planned to do anyway, was to move to the new
>> beta K3 firmware.  I forced the K3 into MCU Loader and upgraded the
>> firmware with the shack MBP.  No issues in communicating with the K3
>> during the upgrade.  Once the K3 was back operational, same issue as
>> before with unexpected TX on rig control.
>>
>> Anyone experience an issue like this before?  Thought I'd ask before
>> stripping CocoaModem and related pieces off the shack MBP.
>>
>> Tighe
>> NK4I
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