Got no responses but learned some more that may be helpful to others:
My SO2V lost audio channel problem appears to be triggered by commands that
Writelog sends to K3 when changing TX focus. It happens ONLY when Writelog
| Radio | Headphones = Normal. By setting Headphones = Split, the unwanted
behavior goes away and both channels remain active through RX selection
changes. I should have realized this from prior experience with SO2R.
The reason this problem came and went during the contest was probably
because I happened to use a Setup menu item that is *totally unrelated to
Headphones*, most likely changing rotor control settings. That daring deed,
and just about any other visit to Setup for dozens of reasons including
"just looking" and not changing anything at all, always resets Headphones
to Normal. (I've debated that obviously incorrect behavior with Writelog
Support without success.)
The behavior that I vaguely remembered from the "naked" K3 (i.e. unassisted
by Writelog) was in K3 Remote when you toggle SUB on or off. This causes
BOTH channels to drop out until you tweak the volume controls. I don't know
if it's related to whatever Writelog is doing when you toggle focus but I
believe this is the problem I heard was "on the list" at Elecraft.
It's a weird, weird world.
/Rick N6XI
On Sun, Jan 5, 2014 at 6:15 PM, Rick Tavan N6XI wrote:
> [Sorry for the cross-post; this is a matter involving both the K3 and
> Writelog.]
>
> During this weekend's RTTY Roundup, operating SO2V, I had a strange
> problem *sometimes* when changing TX focus via Writelog. I would be
> listening to both main and sub-receivers with TX focus on Main. If I
> toggled TX focus between Main and Sub, AF gain on the non-focus receiver
> would drop to zero. Touching the AF control ever so slightly would restore
> audio. It didn't matter whether I toggled focus by clicking a call in the
> "other" decoder window, clicking an Entry window field or using the
> EntryKbdXmitFocusDown function via a Keyboard Shortcut. Line Out audio to
> the decoders did not drop out. The problem persisted for several hours but
> eventually went away and both channels of audio stayed live through focus
> toggle events for the rest of Saturday. But Sunday morning when I fired up
> again, the problem returned. It did not seem to be a per-band issue as I
> saw the problem exist and go away on the same band(s). When it was
> mis-behaving, it did so on all bands that I checked and likewise when it
> was behaving. I believe I had Writelog Radio Menu | Headphones Normal and
> Headphones Latch set at all times. Writelog version 11.17E and K3 MCU
> version 4.77.
>
> Although this seems at first glance to be an obvious Writelog matter, it
> prompted *deja vu* feelings because a similar phenomenon (a bogus AF gain
> value) shows up when cycling a K3 Remote connection and has been attributed
> to a bug in K3 firmware, not yet fixed. Also, Writelog has dedicated K3
> code to support SO2V using the two receivers and the K3 SPLIT function.
> That code is exercised whenever you toggle Writelog TX focus between Main
> and Sub-receivers.
>
> Any ideas?
>
> Thanks & 73,
>
> /Rick N6XI
>
> --
> Rick Tavan N6XI
> Truckee, CA
>
--
Rick Tavan N6XI
Truckee, CA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
