I don¡¯t have a QMX+ yet but what I intend to do is build it for 9V and install a linear voltage regulator so that I can supply it from 12V, 13.8V power supplies, 12V lead-acid batteries (could be 13V+) or LiPo¡¯s (up to 12.6V).
My reasoning is that, within reason, I don¡¯t need to worry about which source of power I use and the QMX+ will have a steady 9V supply.
The down side is that power is wasted in the regulator.
It¡¯s a personal choice, but it suits my requirements.
Comments welcome.
73/72
John
M0JBA
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On 14 Sep 2024, at 16:08, Mike, KL7MJ via groups.io <alaskamike@...> wrote:
I built all of my Q*X radios for 12v. My thought was that if I built it for 12 and only had a 9v battery I would be ok, but if I built it for 9 and only had a 12v battery I would be out of luck (or possibly out of a radio).
73,
Mike, KL7MJ
