Some more on the QMX mid band high noise.
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First let me describe the issue. Turn on the QMX. Very loud static/noise. After about 10 seconds, the noise becomes intermittent, and then goes away entirely.? At that point the QMX works perfectly.? The noise is about 20 dB louder than the ambient band noise. Until today, I was just going to live with it.
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Today, I did a SOTA activation with my QMX. The noise continued for several minutes. I thought, uh-oh, I'm screwed. The noise then stopped, and all was well. I did a few on/off cycles to see what would happen. The noise would last about 10 seconds.? There is one key difference between today, and all previous uses of the QMX. The QMX was in my backpack for about 2 hours. The outdoor temperature was 45-50 degrees. This is the coldest I have used the QMX.
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Questions:
1) Is this the same noise others have been hearing ?
2) Has anyone found it to be something other than the PCM1804 ?
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73,
Steve, N2IC