[Elecraft] P3 Ubdate

[Joe Subich, W4TV]

> 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.
>