[CW] "New" Keyer Feature Ever Needed?

Thu, 30 Oct 2003 22:46:03 -0500

Debouncing was also standard on the Curtis keyer chips.

Also an undocumented feature of the "hand key" input of the Curtis keyer
chips was that the weight control would "faten up" any closure of a key by
adding a additional closure time.

This has been used by some bug operators (including myself) to debounce a
bug and to provide weight to the dots under changing conditions.

A short article of Curtis keyers appears here:

http://www.arrl.org/news/features/2002/02/04/2/?nc=1

An interesting Time-Line of electronic keyers and paddles appears here:

http://www.iz1cqn.it/keyers.htm

73

DR
----- Original Message -----
From: "Richard Slone" <[email protected]>
To: <[email protected]>
Sent: Thursday, October 30, 2003 9:20 PM
Subject: [CW] "New" Keyer Feature Ever Needed?

> Hi All,
>   I am keyer shopping and just saw a feature that seems to make sense, but
I
> wonder if it is ever really needed.  The new Island Keyer II kit by
Jackson
> Harbor has a debounce setting for use in straight key modes.  It
compensates
> for mechanical key bounce by using a default of 25 ms for the minimum
> allowable time between make/break transitions of the key.   (The debounce
> value is selectable from 1 to 99 ms.)  In other words, if you close the
key
> and it bounces a little before staying closed, the keyer just outputs a
> single closure to the transmitter.
>   Has anyone ever found a need for this feature?  It doesn't seem to be a
> setting for the LogiKit CMOS4 which appears to be the most popular full
> featured keyer kit on the market.  If this feature was particularly
useful,
> it would seem that other keyers would have incorporated it by now.  Any
> thoughts?
>   Thanks & 73,
>   Richard, KG4VOX
>
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