Re: QMX TX'ing with a 3kHz pan adapter in HDSDR (just tested in CWT)
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Hi Zhenxing
I don't think you need to switch off and restart QMX. Whenever you edit configurations in QMX, with a few exceptions, all the new settings take effect when you exit the configuration menu and return to normal operating mode (or in the case of terminal access, when you exit the top level configuration menu). The mentioned few exceptions are some things like the recent CW Filter settings, which take effect immediately as you alter the selection, so that you can hear the difference.?
I don't see any particular reason not to send out the whole 48ksps raw IQ to USB, during ordinary CW operation of the transceiver. Do you? There isn't any computational penalty or anything, all I need to do is add a switch to select where the USB Audio is taken from in the signal processing chain: the final demodulated filtered result as heard in the earphones, or the raw I Q baseband at the start.?
On Thu, Aug 1, 2024 at 2:44?AM Zhenxing Han N6HAN via <spica.han= [email protected]> wrote: No I believe you have to restart QMX to switch between I/Q and non-I/Q mode to make the virtual usb sound card reflect the changes.
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BTW I always thought 3k was too narrow, but after trying it out, I now think it¡¯s actually pretty usable. Definitely better than nothing. On icom ic7300 and ic705, the most zoomed-in spectrum display is 5k wide. And if you think about it, when you¡¯re contesting, the band is gonna be crowded so you can just search 1kHz after another. And if you¡¯re POTA hunting or SOTA chasing, you¡¯re most likely scrolling back and forth on a few well known narrow frequency ranges anyway. With wide-open filter, your ears notice them easily and with a narrow band scope you locate and tune to them immediately and accurately. So I¡¯d say it¡¯s much more useful than people would assume.?
73 Zhenxing N6HAN
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