[Elecraft] K3S Power On / PTT

[Guy Olinger K2AV]

See if there's a smartphone app that breaks out a usb to which you've
plugged in the power cable. I'm going to look for one now.

Otherwise you've put yourself in a very interesting box. Need to turn off
that dtr for moving.  :>)

73, Guy K2AV

On Saturday, August 8, 2015, Marco HB9CAT <hb9cat at thezollingers.org> wrote:

> I configured my K3s to use DTR to key CW, (CONFIG:PTT-KEY to “Off-RTS”)
> and configured my logging program (Dxlog.net) accordingly; the COM port I’m
> using is the K3s virtual serial related to the USB connection. Everything
> worked fine.
>
> Later on I unplugged the K3s to use it in another location, where I’ve
> just connected power and antenna (no USB); right after powering it up it
> went to TX, USB RTS was probably in an undefined state being interpreted as
> high so it keyed CW.
> I knew that might be the problem so I tried to access the CONFIG:PTT-KEY
> menu: there was no way to get there while the K3s was stuck in TX, as usual
> I got to the the “FW Revs” default config menu but I couldn’t move to the
> other menus.
>
> The only possible solution has been to get hold of a PC, install USB
> drivers and set RTS low.
>
> Question: is there any alternative power-up sequence to enter a sort of
> safe mode allowing me to change configuration ?
>
> Thanks
>
> Marco HB9CAT
>
> P.S.: all firmware revisions are the latest
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