开云体育

QDX has become flaky

pgramsey, N9LFF All Messages By This Member #127525 I have an 18 month old QDX that has become increasingly erratic. ? Running WSJT-X, it will receive fine, but as soon as it switches to transmit it errors off with the double blink of the LED. ? The antenna is fine, SWR < 1.4. ? I've run my QMX on the same band with the same antenna and it works. ? It needs a power cycle to recover. Every now and then it will transmit, but the failure rate is probably something like 90%. ? Any thoughts?
Kirk Maskalenko All Messages By This Member #127527 开云体育 Suspect RF getting into the usb cable. Try a different usb cable, ones with a toroid choke. My qdx seems more prone as well. Kirk toggle quoted message Show quoted text On Aug 10, 2024, at 3:23?PM, pgramsey, N9LFF via groups.io <pgramsey@...> wrote: ? I have an 18 month old QDX that has become increasingly erratic. ? Running WSJT-X, it will receive fine, but as soon as it switches to transmit it errors off with the double blink of the LED. ? The antenna is fine, SWR < 1.4. ? I've run my QMX on the same band with the same antenna and it works. ? It needs a power cycle to recover. Every now and then it will transmit, but the failure rate is probably something like 90%. ? Any thoughts?
pgramsey, N9LFF All Messages By This Member #127530 Wow, great suggestion! I ran my cable six times through an FT240-31 and it instantly got better. I probably really need a new cable, but this got me back on the air. Thanks.? ? Another symptom of my problem was that the reported frequency kept changing, drifting from 14.0740 to 14.0735 to other odd values. That seems to have stopped, too.

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