Thank you Dan,
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I've removed the battery pack out of the equation and I use my lab linear power supply which can deliver 1A. I let the QMX in receive mode and I slowly decrease voltage and suddenly it shuts off at around 10.5V.
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With the battery it was more erratic and sometimes I got a high voltage warning whereas the voltage was definitely below 12V.
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In the menu I have min voltage : 7V, max voltage : 13V, supply voltage : prevent TX
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I think there is probably something wrong with my QMX but I am at loss at what it could be...
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73,
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Yannig - F4IUJ
