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I don't advise using MIC + LIN because during transmit, anything
picked up by the mike will also be transmitted. This would then
be voice transmitted in the non-voice band allocations. Largely
in violation of FCC rules.
MIC SEL should be set for LINE IN. DATA MD should be set for
DATA A. Connections between the computer and radio is
accomplished by ONE USB cable which handles RX audio, TX audio and
CAT commands. There should be nothing plugged in the LINE in or
out on the back of the radio.
The Radio setup for WSJT is as in the following screen capture on
the right side.
The audio level as set by a combination of PWR slider on the
WSJT-X screen and the LINE gain as set by the MIC control should
be such that there are 4 bars on solid on the ALC scale and the
5th bar flickering. Then the actual transmit power is set by the
PWR control on the radio.
On 1/9/2020 1:44 PM, Tom Schaefer NY4I
Set MIC+LIN to
ON. (Page 55 of the manual).
If set to
ON, and MIC SEL is set for FP or RP, the present mic OR
line input can
be used for transmit audio.
Note: Setting MIC SEL to LINE overrides the MIC+LIN menu entry (its
becomes "N-A"). When MIC+LIN is in effect, rotating
the MIC control shows MIC
gain. Set MIC SEL to LINE to adjust LINE IN
You just have to be careful to not talk if you have
a mic connected as I believe the MIC is hot while transmitting.
I have not tested if the mic stays hot in awhile though as I run
with MIC+LIN OFF and set it to LINE in (with a PF button
programmed to switch).
The data mode you want is DATA A and NOT PSK (that
is for the internal PSK decoder).
The biggest change for people not used to the K3 is
that for digital mode like this you DO want ALC deflection. You
want to set it for the 5th bar is barely lighting up. That is
different than other radios where you do not want ANY ALC
See page 34 and 30 for more info.
On Jan 8, 2020, at 9:29 PM, Michael WA7SKG
I was helping a friend set up his K3S for
FT8 this afternoon. Haven't played with one of those
before, quite a challenge. Our main problem was getting
audio into the transmitter. What finally worked was to
go into the radio menu and set MIC SEL to LINE IN.
Immediately made contacts in Florida, Russia, and Japan.
PSKReporter showed reception all over the US,
Switzerland, Russia, Japan, the Carribbean, West Africa,
etc. Who says there is no propagation?
My first surprise was in the WSJT configuration, I set
the mode to Pkt/Data and it did not work. I had to set
it to None. Then set the radio to USB, not Data, and
change the MIC SEL to LINE IN. It seems a nuisance to
have to go into the menu and change the MIC SEL each
time you want to move from voice to FT8. Most radios I
set up, I chose the Pkt/Data and when I select a band in
the band map, it automatically sets the radio to DATA
and audio flows properly. That does not seem to be the
case for the Elecraft.
Did I miss something in the configuration? Surely one
does not have to go into the menu and make changes every
time he wants to go from SSB to FT8?
Any insights appreciated.