[Elecraft] Idiom Press CMOS-4 ( emulation of other keyers)

[Wes Stewart]

--- On Mon, 3/9/09, dw <bw_dw at fastmail.fm> wrote:

> From: dw <bw_dw at fastmail.fm>
> Subject: [Elecraft] Idiom Press CMOS-4 ( emulation of other keyers)
> To: "Elecraft_List" <elecraft at mailman.qth.net>
> Date: Monday, March 9, 2009, 2:14 PM
> Hey All,
> 
> The CMOS-4 advertisement indicates that it can emulate
> other keyers.
> I'm guessing that means that it emulates their
> weighting
> characteristics??
> 
> The Logi-key.... the Curtis "A" timing..... and
> the Accukeyer.
> 
> Since I'm not familiar with those keyers, I wonder what
> distinct
> characteristics are being emulated.
> Are those keyers noted as having some peculiar
> characteristics?
> 
> Just wondering if anyone....off the top of your
> head......could
> recollect any special differences?

I built an Accu-Keyer in 1973. If you are an ARRL member you can see a rather poor copy of the original article here:

http://p1k.arrl.org/cgi-bin/topdf.cgi?id=62617&pub=qst

The Accu-Keyer has self-completing dots and dashes, dot and dash memories, iambic operation, dot and dash insertion and automatic character spacing. 

The Accu-Keyer spawned the Accu-Memory (http://p1k.arrl.org/cgi-bin/topdf.cgi?id=67877&pub=qst) which added memory storage.  I built a couple of these, giving one to my friend George, W6TC, and adding another couple of circuit boards full of TTL ICs to another one for myself that added automatic changeover sequencing, transmit/receive timing, etc. for automating my EME and meteor scatter schedules. It's still out in my storage building.  Another thing for my widow to dispose of.

The Logikey and Curtis stuff basically has the capability of emulating some or part of the features of the Accu-Keyer.

Wes N7WS