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Re: QMX (not-plus) power issue


 

Roy:

I did in fact post that it was a 12V QMX. I did not build it, however; I bought it from someone else who had.

I have to admit I had forgotten to pay attention to what the power source (an Anker power bank + 12V trigger cable) said my current draw was. That had come up before, so that's an oversight I should correct next time I get a chance. I do suspect it's higher than it should be, though. While I was using the power bank to also run the laptop (long story), that should not have drained this particular power bank to zero in the time I was using them; but it did.

Still, I should check the numbers. Not sure when I'll get a chance to do that experiment next, but I'll report back when I do.

On Fri, Sep 20, 2024, at 04:55, Roy - KI0ER wrote:
Some helpful numbers to post would be the voltage you built your QMX for, and what is the overall input current draw in receive mode of your QMX??
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For a 12v QMX you should see around 90 mA or so of current when it's on and idle (not transmitting).?
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If it's substantially more than 90mA then your power meter is likely correct, and one of the output power transistors is likely blown/defective.... As a first diagnostic guess.?
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73
de Roy - KI0ER
Littleton, Colorado USA

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