Attached is a comparison of the QCX vs QMX CW filtering. These are actual measured responses. Not simulation or calculation. It's quite clear how much steeper the QMX filter edges are. Which is normal because QMX uses DSP filtering.
On Mon, Jan 1, 2024, 3:37?PM Danny Bower <m0sdb@...> wrote:
On Mon, Jan 1, 2024 at 12:10 AM, Peter GM0EUL wrote:
Are you sure there's something wrong with it? In my experience the CW filter on a QCX is very soft compared to my K2 and KX3.
Agree. The first time I used a radio without really sharp filtering it was quite a shock just how much activity I could hear above and below the frequency I was tuned on.?
The QMX is pretty good. I was using my Kanga Rooster yesterday though and there was a cacophony of dits and dahs either side of me.?
These days I don't think anything of it but it is distracting at first, particularly to a newcomer to CW :)
