[Elecraft] KX3 on Data Contest, is utopia?

[Wayne Burdick]

On Jun 7, 2014, at 11:50 PM, iz6gvc <iz6gvc at libero.it> wrote:

> Hi Wayne,
> my first doubt is that many OMs that I've asked this question have answered
> that the KX3 is less selective with big signals near the operating frequency
> respect to the K3.
> 
> Is a fact or between this two great radio the difference is only on the
> case?

The K3 does have narrower roofing filters available. The KX3's CW/DATA roofing filter bandwidth is effectively 1 kHz (500 Hz after I/Q demodulation). The K3 has several narrower bandwidths available: 500, 400, 250, and 200 Hz. The 200-Hz filter is especially effective at rejecting close-in CW/DATA QRM.

73,
Wayne
N6KR