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  • AE5X
  • 4 ай бұрын
  • 1,418
  • 1

QMX thumping issues on CW

Running firmware 1.00.017, here is how the QMX sounds on CW 20-80m. The only change to settings I've made are to make the sidetone volume relative to AF gain (not absolute, as is the default). The thumping that you hear remains the same at all power levels, from 2 watts out to 6 watts out and is roughly the same with headphones as with the powered speaker used here.

Пікірлер: 10

  • @AnthonyJones-vk6xq
    @AnthonyJones-vk6xq4 ай бұрын

    60m and 40m i could just about live with, as for 80m 30m and 20m thats a different story. Love your 9A5N key, very very nice. Best 73.

  • @SOTA-plus
    @SOTA-plus4 ай бұрын

    I have the high band - same issue, but different affected bands. Glad to see it’s not just me! Fingers crossed Hans can figure it out. He’s a wizard.

  • @AndrewMurphy8383
    @AndrewMurphy83833 ай бұрын

    I would how some people would do back in old days of cw when you had to have a sounder

  • @ai5dd
    @ai5ddАй бұрын

    Do you have AGC enabled? Also, firmware version 19 came out recently and has an option to turn off thumping.

  • @AE5X

    @AE5X

    Ай бұрын

    Yes, shortly after this video FW .019 fixed the problem.

  • @jimford1132
    @jimford11324 ай бұрын

    My thumping seems to be about the same on all bands. I am using an amplified speaker (a ball sized one slightly smaller than a tennis ball). What AGC setting seems to help? I think for CW I could easily use no AGC because the band noise is not amplified with no signal (and less fatiguing) but a signal seems to pop out of the noise better.

  • @KX4UL
    @KX4UL4 ай бұрын

    I can hear what you are talking about. I have this radio but haven’t had a chance to try it yet. 40m is my favorite band with 20m and 30m being my next favorites. I doubt this issue will be a problem for me as such. I’ll be interested to see if this problem can be resolved. Great job on the video…72!

  • @AE5X

    @AE5X

    4 ай бұрын

    I'm not sure if each QMX displays the same behavior on the same bands. 80m seems to be commonly affected but others report significant thumping on 60 and 40 - I don't have a problem there. I have tried a few AGC setting that were suggested - they don't seem to make much difference. AGC settings in this rig are infinitely configurable - may too much! I'm lucky in that the most affected band on my QMX is a band I never use. Good luck and 72, John

  • @TridentMissileTech
    @TridentMissileTech3 ай бұрын

    Never really noticed on mine.