[Elecraft] CW listening pitch

[Joe Subich, W4TV]

Ted,

> I have the 700Hz/5-pole, the 400 Hz/8-pole, and the 200 Hz/5-pole.

The only real concern in selecting a preferred pitch is that the K3
will set the center of your CW filter so that Fc-[BW/2] is no lower
than 200 Hz.  If you select a center frequency less than 550 Hz,
your 700Hz filter will be offset to the high side.  For example, if
you select 450 Hz the 700 Hz filter will cover 200-900 Hz not 100
to 800 Hz.

That's not a big issue with wider filters but just something to be
aware of when selecting filters and nominal sidetone frequencies.
I tend to prefer 490 (it's close to B4 [493 = B4]) which works with
any of the normal Elecraft CW filters (500, 400, 250 or 200).

73,

    ... Joe, W4TV


On 2015-02-28 2:29 PM, Ted Edwards W3TB wrote:
> I like to use the CWT function when operating CW and then the Spot button
> to zero-beat.
> I have been using 700 Hz as the pitch but would like to hear a lower
> frequency audio tone for my own preference.
>
> What is the mind of the Reflector on a best tone frequency and related to
> whether it has any impact on the roofing filter selections?  I have the
> 700Hz/5-pole, the 400 Hz/8-pole, and the 200 Hz/5-pole.
>
> And thank you all ahead of time for your answers.
>