Posted by
Frank O'Donnell on
May 22, 2019; 5:14pm
URL: http://elecraft.85.s1.nabble.com/Level-of-K3S-audio-out-to-digital-apps-on-Mac-tp7652106.html
Thanks to everyone for the help getting my new K3S dialed-in to work
with digital apps such as WSJT-X and FLdigi on my Mac, with the K3S
attached to the Mac by a single USB cable. Overall it's functioning very
well now, and I've been working some nice DX.
I have one question at the moment. Especially under certain band
conditions, audio level sent from the K3S to the apps seems low. With my
prior rig (Icom 7300), my primary way of dialing up and down the audio
level sent from the rig to the computer was by adjusting the RF Gain
knob, which if turned far enough (i.e. too far) would virtually always
put the WSJT-X received signal meter far into the red. With the K3S, I
gather it's normal to operate with RF Gain turned fully clockwise all of
the time. The only other adjustment I've found on the K3S is Config >
Line Out. The default appears to be 10, and even if I take it up to the
maximum of 100 it doesn't put WSJT-X into the red. (Not that operating
in the red is desirable -- since clipping will occur -- but in the past
I've found that if the rest of the band is quiet enough, WSJT-X's
ability to decode a very faint DX signal may be improved by bring the
received audio level up just to the edge of the red.) I'm much newer to
FLdigi, where the signal levels I'm seeing seem chronically low, but
that may reflect band conditions (and, I'm told by ops more experienced
with it, that tends to be the way FLdigi always looks compared to WSJT-X).
In the Mac's audio system, there are no level adjustments for the input
USB Codec, and I don't think there are relevant adjustments in either
WSJT-X or FLdigi. So my question is, are there any other settings or
adjustments to experiment with on the K3S that might give me more
flexibility on audio level sent by USB to the Mac? If not, would using a
sound card-type device rather than USB be an alternative way to have
more ability to control the level of received audio sent to the computer?
Thanks and 73,
Frank K6FOD
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