I've got my K3 set up for cw on Field Day with a laptop usb port driving
a usb to serial converter. Rig control and cw keying are done over the
serial cable...
Once it happens to you, you get gunshy about turning the rig on with
rs-232 connected. Maybe there could be some sort of inhibit to prevent
this from happening?
If you have configured the K3 to look at RTS or DTR to activate the
Transmitter, then it will do so. It can't know that your computer is
attached but turned off.
Two suggestions that might help:
1) change the CONFIG menu item if you are going to leave an unpowered
RS232 device attached to the radio, or
2) run the USB-to-RS232 device through a USB HUB that has an external
power supply which is powered whenever the K3 is powered.
73,
Lyle KK7P
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