Any well timed twin paddle mode can be converted fairly easily. In
the case of ultimatic, it would seem that an SSI approach is quite
possible, but, if you have access to the source code, and a spare
pin, only a few extra lines will be needed on any microprocessor
based keyer.

If one is considering added modes for the K3 keyer, one often
overlooked mode that should be considered *in addition to* Ultimatic
is CMOS Super Keyer/Logikeyer.  One can think of Logikeyer as
"Iambic C" ...

  In Iambic A the decision to add the opposite element is made at
  the *end* of the previous element.

  In Iambic B the decision to add the opposite element is made at
  the *beginning* of the previous element.

  In Iambic C (Logikeyer) the decision to add the opposite element
  is made at the end of the first *dit period* - the decision to add
  a dah is the same as Iambic A while the decision to add a dit occurs
  1/3 of the way through the dah (a slightly relaxed Iambic B).

The bug mode is a different matter, because the dashes are,
essentially, straight keyed. However, if the K3 had bug mode added,
I'd also expect it to have straight key added, as the same problems
would have to be solved there.

Since the K3 has separate paddle and straight key inputs, one might
be able to use *two cables* with paddles to create a bug mode -
connect the dit contact to the dit input (tip) of the paddle jack
and connect the dah contact to the straight key input ... or just
use a bug <G>.  Anyone want to try it (with a single lever paddle)?

73,

   ... Joe, W4TV


On 2014-12-07 6:10 AM, David Woolley wrote:
Re first bottom quoted paragraph, Windows doesn't come with a fully paid
version of MS Word.  It has Wordpad as its built in word processor.
There are differences in that Elecraft don't sell an standalone keyer,
but in my experience, multi-function products happen when marketing
departments cannot come up with any real innovations.

Re the second quoted paragraph, this is basically not true, as for
example demonstrated by
<http://fermi.la.asu.edu/w9cf/articles/ultimatic.pdf>.  Any well timed
twin paddle mode can be converted fairly easily.  In the case of
ultimatic, it would seem that an SSI approach is quite possible, but, if
you have access to the source code, and a spare pin, only a few extra
lines will be needed on any microprocessor based keyer.

The bug mode is a different matter, because the dashes are, essentially,
straight keyed.  However, if the K3 had bug mode added, I'd also expect
it to have straight key added, as the same problems would have to be
solved there.

There seems to be an Arduino based open source keyer at
<http://sourceforge.net/p/k3ngarduinocwke/code/ci/master/tree/> that
could, presumably, be adapted.

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