开云体育

New Chat: QMX weird behavior

#chat-notice

Group Notification #143348 A new chat has been created: All, ? I've built the QMX rev 4 60-15m transceiver.? ?I've ran all the terminal test and analysis sweep with positive results.? ? I've even made an FT8 contact on 15m, and CW contact on 20m.? ?However, the radio has had a behavior repeated multiple times that I don't know where to start to investigate. ? When I reach over to adjust a knob, push a button, or simply touch the case, the radio's screen will loose all characters, and audio will go to a loud hiss.? Powering off and then on resolves the issue.? ?The issue has repeated itself possible 8 to 10 times over the past ~10 hours of on time. ? Any ideas on what might be causing the issue, and/or how to resolve. ? Regards, Wilson Little (NT5AT) ? ? ? By: NT5AT - Wilson <wilsonlittle66@...> View/Join This Chat Do not reply to this message to post to the chat. You can participate in chats only through the group's website.
Mike Krieger All Messages By This Member #143351 Check the soldering on the volume encoder pot. I added a small wire between the board and pins to be sure of a positive connection. Mike Krieger toggle quoted message Show quoted text On Thu, Apr 17, 2025 at 12:22?PM Group Notification <[email protected]> wrote: A new chat has been created: All, ? I've built the QMX rev 4 60-15m transceiver.? ?I've ran all the terminal test and analysis sweep with positive results.? ? I've even made an FT8 contact on 15m, and CW contact on 20m.? ?However, the radio has had a behavior repeated multiple times that I don't know where to start to investigate. ? When I reach over to adjust a knob, push a button, or simply touch the case, the radio's screen will loose all characters, and audio will go to a loud hiss.? Powering off and then on resolves the issue.? ?The issue has repeated itself possible 8 to 10 times over the past ~10 hours of on time. ? Any ideas on what might be causing the issue, and/or how to resolve. ? Regards, Wilson Little (NT5AT) ? ? ? By: NT5AT - Wilson <wilsonlittle66@...> View/Join This Chat Do not reply to this message to post to the chat. You can participate in chats only through the group's website.
ajparent1/kb1gmx All Messages By This Member #143358 Most likely ESD, static discharge.? touch something else first see if it goes away. ? Could also be bad soldering. ? -- Allison ------------------ Post online only,? direct email will go to a bit bucket.

Previous Topic Next Topic