Bill,
If you have updated the K3 firmware in the last few months, it does not
make any difference whether the K3 or the computer is turned on first.
The K3 now has a SAFE mode that disables DTR and RTS until it receives
some command like polling for frequency, mode, etc. from your software
application.
You can go into the K3 CONFIG menu for KEY-PTT and turn it to unsafe if
you have devices that monitor the RS-232 bus and do not issue any
commands (SteppIR controllers for one instance).
Look at the firmware release notes for the past 3 months.
BTW, the firmware release notes should be considered an addition to your
K3/K3S manual. Do not overlook them.
73,
Don W3FPR
On 3/29/2018 6:58 PM, Bill Frantz wrote:
On my Mac system, it doesn't seem to matter whether the radio or the
computer starts first. The USB interface to my upgraded K3 is powered
from the computer with enough functionality that the computer recognizes
it without the radio being on.
In any case, start wsjt-x last because it will try to talk to the radio
for rig control and harass you until it can succeed. I've been in this
situation enough times to know that starting the radio, waiting until
the radio is ready to talk to the computer and then clicking "Retry" works.
73 Bill AE6JV
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