K3 and WSPR rig stays in TX mod

[VE3WDM]

I have been emailing a fellow ham regarding some WSPR troubles. The rig is an Elecraft K3 and it seems to be stuck in TX and will not switch back to receive. The rig has to be shut down and restarted to clear the problem. I did have this same problem with WSPR and my K3 some time ago but am not able to remember what I did to solve the problem.  I have posted on the WSPR forum as well but wanted to also post here as it may be rig specific.
Mike
VE3WDM    
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[Mike Reublin]

I had the same issue with RTTY. Rebooting the computer fixed it.

73, Mike NF4L

On 9/19/12 6:26 AM, Mike Weir wrote:

> I have been emailing a fellow ham regarding some WSPR troubles. The rig is an Elecraft K3 and it seems to be stuck in TX and will not switch back to receive. The rig has to be shut down and restarted to clear the problem. I did have this same problem with WSPR and my K3 some time ago but am not able to remember what I did to solve the problem.  I have posted on the WSPR forum as well but wanted to also post here as it may be rig specific.
> Mike
> VE3WDM  
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[Tony Estep]

On Wed, Sep 19, 2012 at 5:26 AM, Mike Weir <[hidden email]> wrote:

> ...an Elecraft K3 and it seems to be stuck in TX and will not switch back
> to receive....

============
One way this can happen is if RF is getting into the computer and hosing
the serial port driver. This can happen even with a couple of watts from a
WSPR transmission. The fact that WSPR transmissions go on for 2 minutes can
defeat the operating system's attempts to reset the port buffer. If that's
it, the remedy is the same as for other RFI problems: a good single-point
ground setup and some ferrites.

Tony KT0NY


--
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[Rick WA6NHC]

On one of the programs I run (don't remember which one) I set the command to
tell the K3 TWICE to go back to receive.  That program either doesn't
listen/talk well, or the timing is often off on serial commands.

Rick wa6nnhc/kl

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Tony Estep
Sent: Wednesday, September 19, 2012 2:27 PM
To: [hidden email]
Subject: Re: [Elecraft] K3 and WSPR rig stays in TX mod

On Wed, Sep 19, 2012 at 5:26 AM, Mike Weir <[hidden email]> wrote:

> ...an Elecraft K3 and it seems to be stuck in TX and will not switch back
> to receive....

============
One way this can happen is if RF is getting into the computer and hosing
the serial port driver. This can happen even with a couple of watts from a
WSPR transmission. The fact that WSPR transmissions go on for 2 minutes can
defeat the operating system's attempts to reset the port buffer. If that's
it, the remedy is the same as for other RFI problems: a good single-point
ground setup and some ferrites.

Tony KT0NY


--
http://www.isb.edu/faculty/facultydir.aspx?ddlFaculty=352
______________________________________________________________
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