FW: K2: Erratic action of the Hand Key "Autodetect"function

[Dan Barker]

OK, ok, ok. You made me look (I got to use my +2.50 diopter reading glasses
AND my big-arm, flourscent ring)!

My (hasn't ever glitched) diodes are 1N4148. I believe from Radio Shack.

http://www.junun.org/MarkIII/datasheets/1N4148.pdf

Dan / WG4S / K2 #2456

<snip>
Picked up a couple of 5711's
</snip>

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[Ron D'Eau Claire-2]

While we're on the subject, there are occasionally reports of a "reverse"
glitch too. That is, when sending with paddles using the internal keyer in
Iambic mode, instead of getting the expected alternating dit-dah (or
dah-dit) you get a steady key-down carrier as long as you squeeze the
paddles!

That's also *normal*. To do that, the operator needs to close (squeeze) both
paddles simultaneously! The logic is set up to detect a simultaneous closure
as a straight key input so it disables the keyer logic!

It's really quite rare. I played around with the K2's keyer (nice!) quite a
bit when I first built S/N 1289 and managed to make it happen only after
reading about it on the reflector. The closure of both paddles has to be
very nearly at the same instant.

Ron AC7AC



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