[Elecraft] help with my rigs center frequency

[Joe Subich, W4TV]

 > The default filter centre frequencies in CW and in AFSK A/FSK D can be
 > adjusted using the K3's PITCH control.

More specifically, one can adjust the default CW offset and the AFSK A
or FSK D *Mark* frequency. using the "Pitch" control.  CW pitch is the
center of the filter but AFSK A/FSK D pitch is half way between the two
tones - or 85 HZ *higher* that the "pitch" setting.

The typical pitch for RTTY is 2210 (2125 + 85) Hz.

In DATA A (PSK31, etc.) the filter defaults to 1500 Hz center (100 -
2900 Hz).

73,

    ... Joe, W4TV


On 3/31/2012 12:56 PM, Richard Ferch wrote:
> You can change the filter centre frequency in any mode by using the
> SHIFT control. Tapping this control will switch between SHIFT/WIDTH and
> LO/HI CUT modes, and will also briefly display the current FC or LO
> setting in the VFO B display. The default or "normal" FC is marked with
> an asterisk (*).
>
> The default filter centre frequencies in CW and in AFSK A/FSK D can be
> adjusted using the K3's PITCH control.
>
> Assuming you are using sound card software for PSK31, you will likely be
> using DATA A mode. The default filter centre frequency in DATA A is 1500
> Hz. The PITCH control is not available in DATA A.
>
> As a side comment, the SPOT control does produce a tone in DATA A, but
> the tone it produces is not at FC, it is at the CW sidetone pitch, which
> is irrelevant in DATA A.
>
> 73,
> Rich VE3KI
>
>
> KC6CNN wrote:
>
>> I have to set my center mark frequencies for CW, PSK31, and RTTY.
>>
>> CW is 600. Rtty is 2125 I think, But what is the center frequency on PSK31.
>
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