Maybe you are not tuning to where the signal is?? The CW bandwidth is quite narrow, even at 500.
Try this: listen to a 750Hz signal so you know exactly what it sounds like.? One way to do this is to put your QMX in 'practice mode' and key the keyer - the sidetone you hear will be 750Hz based on your settings.
Now put the rig in USB or DIGI mode, and tune to a CW signal, changing the tuning until you hear that exact same 750Hz tone frequency.
Then switch to CW mode, and in order to hear that same signal, tune UP in frequency by 750Hz (your CW offset).? That will center the CW signal in your filter.
It is a good idea after setting the CW passband value to check the CW? offset in the menu - if you haven't chosen your filters exactly right, QMX will auto-shift your CW offset to keep the filter properly centered.? And that active CW offset is how far you need to tune UP in CW mode to hear the same signals as you hear in DIGI/USB mode.
?
I hope this helps.? CW mode shifts the RX frequency by the CW offset so you can hear the carrier at your desired offset (which is set to the same as your sidetone freq).? All modern multimode transcievers do this.
I hope my explanation wasn't too confusing.
Stan KC7XE
