Fw: K3 Tx Eq question

[Richard Fjeld]

Thanks to those who responded.  (Now a Data Mode question)

It was too late to find someone to send DSSTV to, but I did some testing. I had a LSB qso, and I switched back and forth between LSB and Data mode set for LSB.  He could not tell a difference, (though there had to be one, or else my Tx Eq settings are in vain).

Then, I tried DSSTV and switched between the modes and I could see that Data mode was turning off my Rx Eq in the waterfall, and also CMP on transmit.  BUT, I noticed that it took a LOT higher Tx level from the sound card mixer when I was in Data mode than it does in SSB mode to get the same power out.  I'm wondering why that is???   Any thoughts?

It would be nice to be able to use Data mode without changing the Eq settings. FYI, QuickMix software is handy to save the sound card Rx & Tx settings from various programs such as when switching from PSK31 to SSTV, etc.  It allows quick changes.

Dick, n0ce

----- Original Message -----
From: Richard Fjeld
To: elecraft posting
Sent: Monday, February 13, 2012 4:32 PM
Subject: Fw: K3 Tx Eq question


I guess I was tired when I wrote this.  My question should simply be; Does the Tx Eq act upon audio from the Line-In jack.  I now suspect so, but would like to verify it.

It has been suggested that I use Data A mode, and the Eq settings will not be used.

Dick, n0ce
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[Dave Johnson]

Dick

Going back a few years, there was a lot of work done on the K3
firmware to improve the performance of the audio path on data,
particularly on the synchronous data mode for ARQ modes such as Amtor
and Pactor. That is one of the reasons why on Data A mode you will not
be able to alter the equaliser settings.

Why would you want to alter the EQ when sending data? Surely a clean
audio path is the requirement... The K3 with it's present firmware
will allow data rates up to at least 3200 bps on Pactor 3.

73 Dave, G4AON

Thanks to those who responded.  (Now a Data Mode question)

It was too late to find someone to send DSSTV to, but I did some
testing. I had a LSB qso, and I switched back and forth between LSB
and Data mode set for LSB.  He could not tell a difference, (though
there had to be one, or else my Tx Eq settings are in vain).

Then, I tried DSSTV and switched between the modes and I could see
that Data mode was turning off my Rx Eq in the waterfall, and also CMP
on transmit.  BUT, I noticed that it took a LOT higher Tx level from
the sound card mixer when I was in Data mode than it does in SSB mode
to get the same power out.  I'm wondering why that is???   Any
thoughts?

It would be nice to be able to use Data mode without changing the Eq
settings. FYI, QuickMix software is handy to save the sound card Rx &
Tx settings from various programs such as when switching from PSK31 to
SSTV, etc.  It allows quick changes.

Dick, n0ce
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Elecraft mailing list
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Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[hidden email]

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Please help support this email list: http://www.qsl.net/donate.html