[Elecraft] Poor AM audio

[Gil G.]

Hello,

Is it the same with the KX3?

Thanks,

Gil.
--
PGP Key: http://keskydee.com/gil.asc

On Dec 30, 2012, at 11:11 AM, Don Wilhelm wrote:

> Dave,
> 
> AM is a double sideband signal, so the audio you receive will be only about half that of your filter setting.  The 2.7 kHz roofing filter is limiting the demodulated audio to about half the width of that filter - 1.35 kHz - so you will not hear any high audio frequencies no matter how wide you set the DSP bandwidth.  Even though the DSP bandwidth can be set higher, the internals of the DSP currently impose a 4.2 kHz limit on the audio response.
> 
> You will not be able to transmit AM until you install the 6 kHz filter (or with the latest firmware the 13 kHz filter can be used).
> In the meantime, for reception only, you can use the 2.7 kHz filter to listen in synchronous AM mode.
> 
> 73,
> Don W3FPR