[Elecraft] K2 Recommended Side Tone Freq

Sun Dec 29 20:17:06 2002

Hi

The side tone generator circuit is done in the MPU and is a square wave.
There is a shaping circuit on the output of the MPU to make the sidetone
into a sinewave. This circuit works better a the higher frequencies above
500 Hz. You can use the lower frequencies it's just the output on the
sidetone will need to be adjusted a little louder for the same signal level
and the sinewave will not be as pure. I know a ham that likes 440 Hz an it
works fine. The default is 600 Hz but you can put it anywhere you like from
400 to 800.

Don Brown
KD5NDB

----- Original Message -----
From: "Nigel Hayton" <[email protected]>
To: <[email protected]>
Sent: Sunday, December 29, 2002 7:02 PM
Subject: [Elecraft] K2 Recommended Side Tone Freq

> Greetings
>
> I will soon be building #3029 and as one getting back to "hands on"
> construction after a long break - the last one was 45 years ago and had
> two 6L6s in the final - I have found the wealth of information on the
> list very helpful   -   Thank you.
>
> An aspect I would like to understand better.
>
> On page 71 Owners Manual Rev D Oct 22 2002
>
> "pitch can be set from 400 to 800 Hz, although 500-600 Hz is
> recommended."
>
> What is the reason for this recommendation?   Is because of a technical
> reason related to the K2 or is it based on CW operators experience in
> actual band conditions.   The Code teaching program I am using to
> refresh my CW skills suggests to use 750 to 800Hz.
>
> Any advice and suggestions would be appreciated,
>
> 73
>
> Nigel
>
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