[Elecraft] K3 and MK2R, Again

[Joe Subich, W4TV]

 > I recently upgraded the firmware in the MK2R

Is there a specific reason you "upgraded" from working firmware?

When you uploaded new firmware to MK2R did you:
   1) cycle the power (remove power) to load/initialize the new
      firmware?
   2) Reset Router to its defaults?
   3) select the radio protocol and configure the default data rate?
   4) save the new protocol at data rate to MK2R as defaults?

 > every time I manually change bands on one of the K3's the MK2R
 > loses comm and has to be switched off and on.

This sounds like a data clash between the K3 and logging software
that leaves Router unable to read the frequency/mode information.
What logging software?  What is your setting for AUTOINF in the
K3?  What is the polling rate in your logging program?

The K3 stops responding to the CAT port for up to 500 ms when
changing bands (see. K3 Programmers Reference) and then responds
with a significant amount of unsolicited data when the band change
is finished.  It is entirely possible that fast polling from the
logger and AI1 or AI2 in the K3 creates a "stand off."

Try reducing the polling rate in your logging program to 500 msec
between polls and setting Autoinf = nor (off) in the K3 menu.  If
Autoinf is currently nor, try setting it to Audio 1.

73,

    ... Joe Subich, W4TV
        microHAM America, LLC.
        http://www.microHAM-USA.com
        http://groups.yahoo.com/group/microHAM


On 8/14/2010 11:52 AM, K5RC wrote:
> I recently upgraded the firmware in the MK2R and I am back to the old
> problem of every time I manually change bands on one of the K3's the MK2R
> loses comm and has to be switched off and on. If you type in the frequency
> to change bands the problem does not happen. Where is the problem? The
> radio? The MK2R? The MK2R Router has K3 Patched selected.
>
>
>
> Tom Taormina, K5RC
>
> Virginia City NV
>
> Home of W7RN and K7RC
>
>   <http://k5rc.cc>  http://k5rc.cc   FOC 1760
>
> "Communication is the problem to the answer" - 10cc
>
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-- 

73,

    ... Joe Subich, W4TV
        microHAM America, LLC.
        http://www.microHAM-USA.com
        http://groups.yahoo.com/group/microHAM