Thank you for your response. You suggested something like a "tune" mode that reduces power to 25 percent. Can the radio be operated in that mode? Is the power reduction continuously variable? I will take time to study the manuals somewhat to see how that looks in operation. It would be ideal if I could that.
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About fiddling with the supply voltages..I really want to avoid that. I have poor luck and lots of effort to get some digital gear that I can use with my radios that does not scream in the radio's ears. All of it runs on 5 volts or my "12 volt" (12 to almost 14 volts). That includes a Raspberry Pi and a couple of accessories on 5 volts and a small screen about the size of my iPad on the same 12volt batteries the radios use.
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I won't re-use the Anderson Power Poles for any other battery system to avoid the inevitable mixup. But I could use something like polarized plugs sold for automotive use on lithium battery packs with 3 series cells for something around 10 to 11 volts. No digital hash and no power wasted in a dropping resistor or diodes. Just more stuff to drag around on portable ops.
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This with other replies has me reconsidering a QMX+. I will look through the manual as before I ask any more questions about it.
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73,
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Bill ?KU8H
