[Elecraft] KX1 and strange bug in firmware

[Jean-François Ménard]

Hi,

Yesterday, I was building my KX1, and I was at the "test phase and alignment
part 2". I tough that I was something wrong with my keyer.... But hopefully
I found this message on the reflector.... I forgot to read the errata that
came with the KX1 telling exactly this strange behavior. Ouf !!! ;-)
Everything is OK.... I copied CW last night on this little rig !!!!

So people.... Be sure to READ all manual errata that come with your kit
before building... ;-)

[...]

I just reproduced the problem you described below. It's actually even more
complicated: it only happens when STP=700 *and* the LED brightness and
sidetone
pitch are both set above certain levels. This is a firmware problem related
to
how the KX1's microcontroller multiplexes the LED.

The workaround in all cases is to set STP no higher than 690 Hz, as you have
discovered. I'll add a note to the manual errata sheet, and we'll correct
the
problem in a future firmware revision.

[...]
 

J-F / VA2VYZ
K2 #4130 / KX1 #999