[Elecraft] Mic gain goes to zero using N1MM

[K8TE]

Bill,

 

Memory macros-nope.

 

All the N1MM macros are the "standard" button pushes for the DVK messages.
A raspberry Pi may be in the future for my station control now that an
inexpensive touchscreen is available.  But I will stick with N1MM+-K3
interface for now.  In my shack I use LP-Bridge to provide virtual serial
ports, including one to the K3.  However, this anomaly has appeared when
using my old Vista laptop with both N1MM Legacy and Plus.

 

A passive logger could possibly indicate the anomaly's source.  Any suggests
for a software logger?

 

Consider that some other command could also be mangled into MG 0. The
mangling can occur anywhere in the command.

 

What would be useful here is a passive logger for the RS-232 connection. It
would simply monitor the connection and log everything sent over it. It
sounds like a Raspberry Pi application to me, but I like to play software
that is near the hardware level. You could also do it with an Arduino, which
gets rid of the OS, but also makes display output harder. YMMV.

 

73 Bill AE6JV

 

Guy,

 

I don't believe I've indicated this is an analog problem.  It's most
obviously a software/firmware problem.  There is no "MG" command in the N1MM
DVK macros:

 

CATA1ASC SWT21;

CATA1ASC SWT31;

CATA1ASC SWT35;

CATA1ASC SWT39;

 

The only commonality between occurrences is N1MM (various versions) and a
pair of K3's with various firmware versions.  There are no common cables,
USB hubs, serial cards, computers, etc.  That is not to say that some errant
event occurs on rare occasions.  It is interesting to not nothing else goes
astray on the K3 when using N1MM.

 

Since the anomaly occurred with a K3, and another K3 owner had a similar
issue this year, I posted here first.  Next I'll give it a try on the N1MM+
e-mail group.  I'm watching an episode of Sherlock Holmes on PBS as I type
this message-what an appropriate coincidence, or is it?

 

73, Bill, K8TE

 

Since the mic gain, displayed in a digit format, is reported as 
literally going to the digit zero, we must remember that everything 
inside a dotted line within the K3 is entirely SDR. We must carefully 
avoid our decades-ground-in tendency to think of troubles in our 
familiar and comfortable analog fashion.

 

From: Iain MacDonnell - N6ML-2 [via Elecraft]
[mailto:ml-node+s365791n7607363h8 at n2.nabble.com] 
Sent: Wednesday, September 9, 2015 6:38 PM
To: K8TE <billamader at gmail.com>
Subject: Re: Mic gain goes to zero using N1MM

 

On Wed, Sep 9, 2015 at 6:07 AM, K8TE <[hidden email]> wrote: 
> I have experienced this same problem over numerous N1MM versions (legacy
and 
> Plus).  It is very intermittent and I'm unable to identify a specific 
> command or cause.  It's happened to me on both my shack and portable 
> computers.  This symptom does not show up with my daily logger (N3FJP
ACLog) 
> but it has occurred with both of my K3's. 
> 
> I use the "typical" K3 commands for either keying DVK memories or audio
from 
> my computers.  I don't use any of the mic gain command strings in N1MM+. 

Is it possible that you have a macro associated with one of the memory 
buttons('s programmable function), which sets the MIC gain, and one of 
your lesser-used N1MM Logger messages is virtually pushing that button 
(SWT/SWH)? 

73, 

    ~iain / N6ML 
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