[Elecraft] KX3 - RMS Express USB Data Mode

[Walter Underwood]

Are the mic gain settings per-mode? Might check the levels in the two modes. I'm guessing...

wunder
K6WRU

On Apr 22, 2014, at 5:08 PM, "Keith D Jones" <keith at compassmarina.com> wrote:

> I got my KX3 and KPA100 this past February and have a lot of fun so far with
> it.  I've been pretty frustrated the past few days trying to get
> satisfactory RMS Express performance using both Pactor 3 and Winmor.
> 
> 
> 
> I built a cable for my Navigator and quickly had it working with the KX3
> choosing the USB Data mode in the Radio Setup (K3 radio choice).  I quickly
> made a connection and sent a small message.
> 
> 
> 
> The past few days I have been trying to get my SCS PTCIIex Pactor 3 modem
> hooked up.  I built a cable and rebuilt it 2 more times!  The problem that I
> kept getting was a connection and either very slow and error (ARQ Repeat in
> RMSE and error light on TNC) or a disconnect after unsuccessful handshaking.
> Since I could connect I thought that maybe there was a problem with the
> cable.
> 
> 
> 
> I checked with Elecraft and they felt good about my settings, Mic Bias On,
> Mic Gain 12 (4 solid 5th ALC bar flickering).  I used the USB Data selection
> in RMS Express and that set the radio to DATA A.  FL2 would show (I have the
> roofing filters).
> 
> 
> 
> The poor performance continued, then by error I found that I had hit the
> mode button and gone to USB not DATA A - it worked great!  Later changed
> back to DATA A and it was slow, hit Mode and it sped right up and the error
> conditions largely eliminated.  Transferred a 31K file in 3-4 minutes.
> 
> 
> 
> Back to a try with Winmor and the Navigator.  With DATA A mode I gave up on
> the 31K file after 17 minutes.  Trying in regular USB it took 6.6 minutes -
> about twice P3, more or less what I would expect.
> 
> 
> 
> So I am totally confused about DATA A mode - using both sound card (Winmor)
> and TNC.  I haven't had the opportunity to play with other digital modes as
> yet, but wonder whether the DATA A mode is advisable.  Am I missing
> something?
> 
> 
> 
> Keith, N4KDJ
> 
> 
> 
> 
> 
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--
Walter Underwood
wunder at wunderwood.org