[Elecraft] K2 key autodetect problems

[Chip Stratton]

Great ideas to investigate, guys. I'll have to look into it over the next
week. The problem never occurs with paddles unplugged, and I haven't seen
it happen when plugged directly into the key jack on the radio.

I'll report back when I figure it out, or if I don't!

73
Chip
AE5KA

On Tue, Mar 27, 2018 at 6:57 PM, Mike Harris <mike.harris at horizon.co.fk>
wrote:

> Hi Chip,
>
> Not saying this is your problem but my Bencher twin paddles started going
> random nuts. The contact gap is small, less than the thickness of a sheet
> of 70gm paper. During keying it would stick one side or the other. It
> turned out to be the screws fastening the contact pillars not being tight.
> I guess over the years the plastic insulating washers must have compressed
> allowing the pillars to imperceptibly move.
>
> Since tightening them, the only problem with the paddles is me.
>
> Regards,
>
> Mike VP8NO
>
> On 27/03/2018 15:36, Chip Stratton wrote:
>
>> I have the external circuit using two diodes to allow the K2 to detect
>> when
>> a straight key is used instead of the paddles. Occasionally with the
>> paddle
>> plugged in but not keyed, the K2 will  spontaneously start sending a
>> string
>> of dashes. This will terminate, sometimes only briefly, when I do key the
>> paddle. It happens even when K2 transmit power is turned all the way down,
>> and I've never had trouble with RF in the shack.
>>
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