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QMX RX "carrier" noise


 

Today giving CW receiving a try, hunting around for NJ Skeeters, I noticed a nasty carrier noise when tuned to 14.060100 Mhz. Switched to dummy load, it's still there. Swapped antenna to my FTdx10, it's not there, so it's something internal to my QMX. It's also on 14.052100, 14.035100, and so on. Rather than attach a 4MB 7 second video, I've attached some screenshots, using JTDX to give a visual. The two in CW mode are when I tune to 14.060100. The other one is 14.074 in digi mode.? What did I do wrong, and how do I fix?


 

Normal for now. It is alpha firmware after all. Eventually Hans will sort it out

-Mike/w1mt

On Sun, Aug 27, 2023 at 14:35 Rick NF6G <rdante@...> wrote:
Today giving CW receiving a try, hunting around for NJ Skeeters, I noticed a nasty carrier noise when tuned to 14.060100 Mhz. Switched to dummy load, it's still there. Swapped antenna to my FTdx10, it's not there, so it's something internal to my QMX. It's also on 14.052100, 14.035100, and so on. Rather than attach a 4MB 7 second video, I've attached some screenshots, using JTDX to give a visual. The two in CW mode are when I tune to 14.060100. The other one is 14.074 in digi mode.? What did I do wrong, and how do I fix?


 

In future firmware the SMPS frequency will be automatically adjusted to move the harmonics out of the way.

73, Mike KK7ER?


 

Thank you Mike and Mike. I didn't know this had not yet been implemented in firmware.? All part of the fun. Each FW update is like a little gift.