[Elecraft] K2 Iambic b Strange Effect

[David A. Belsley]

Nigel:
   As has been noted in other posts, this property of the K2 is indeed a 
feature, called autodetect, to allow one to use a pair of diodes to 
attach a straight key (or external keyer) at the same time as pair of 
paddles.  It is very clever, but also can cause problems.

   What has not been mentioned in previous answers to your post is the 
fact that this feature can be turned off in the menus, although this is 
done with one of the trickier menu operations (the extended menu 
operations).  If you are not using the autodetect, turn it off as 
follows:

tap menu, and turn VFO knob till you get InP (input).  Press and Hold 
menu to get to the InP parameter-select mode.  Now press DISPLAY.  You 
will see a very short display that says "ADET Off" or "ADET On"  
(autodetect off or on), and each successive press of DISPLAY will 
toggle between the two.  Leave it when it says "ADET Off", and there 
you are.

best wishes,

dave belsley, w1euy



On Sep 4, 2004, at 10:29 PM, Nigel wrote:

> Greetings from Down Under.
>
> With the help and encouragement of the NZ K2 guru Ron, ZL1TW, I have 
> finally
> got on the air with K2 Nr 3029.   Getting back on air after 40 years I
> decided to learn iambic keying so have used my K2 in test mode often 
> for
> practise.   I find that on some occasions when I have closed both 
> paddles at
> "exactly" the same time and held them squeezed I get a steady tone 
> rather
> than alternating dots and dashes.
>
> I can repeat this in operating mode and have confirmed that power is 
> being
> delivered into a dummy load like if a straight key was held down.   
> Needless
> to say it does not happen very often and is an operator error which I
> correct, but wondered if others had experienced this too?   I have 
> found
> that by pointing both index fingers at the paddles, one on either side 
> then
> aiming to push them together simultaneously is a way of effecting this 
> and
> even then it will take maybe 10 or so tries to make it happen. (BTW 
> this is
> not how I send ;-))
>
> My K2 has firmware 2.03d   1.07.  has the Temp-compensation PLL mod 
> fitted
> but not the Keying bandwidth mod.  Installed are KNB2, KAF2 and KAT2.  
>   InP
> = PDLn, Iab = b and the keyer is set to 15wpm.
>
> Regards
>
> 73s,  Nigel ZL2DF
>
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