[Elecraft] K3 AFSK TX Filter

[Joe Subich, W4TV]

> I can leave the filter out but am wondering why it is blocking the
> audio?
The AFSK TX filter is a narrow audio filter that allows only the
defined mark and space tones to pass.  Check the PITCH setting in
AFSK A and make sure it matches the MARK setting in MMTTY (e.g.,
2125, 1275, 915Hz).

 > I am using MMTTY, so perhaps it is a setup issue within that program?

As above a conflict between the K3 and MMTTY.

73,

    ... Joe, W4TV


On 2019-02-24 1:40 PM, Ed G wrote:
> After switching on the AFSK TX filter in the CONFIG menu, I find that the filter essentially blocks all the soundcard audio from being transmitted by the K3, so that I have no output with the filter switched on. Line In gain settings are correct per recent suggestions by Joe, W4TV, and all other K3 settings are proper. When I turn off the AFSK TX filter, the K3 returns to operating normally in AFSK Data mode, with full power output.  I can leave the filter out but am wondering why it is blocking the audio? I am using MMTTY, so perhaps it is a setup issue within that program?
> --Ed—
> 
>