I don't own a KX3, but it appears the internal batteries are a
limitation. By contrast, the KX2, which I do own, uses an 11 V internal
Li-Ion (Li-FePO, I believe) battery, and is designed to provide full
output at that voltage. (The KX3 requires at least 12 V.) One
possibility for the KX3 would be to do as I did for my old KX1, which
was to replace the internal batteries with four AA Li-Ion cells, plus a
low dropout linear regulator to limit the voltage to 15 V. The batteries
would have to be removed to be recharged, and a second set would be
required for longer operation. The scheme works well with the KX1, and I
can't think of any reason it wouldn't work with the KX3. Obviously, an
external battery pack of 4 larger cells could be used the same way. Of
course, the usual safety precautions must be taken, as with any Li-Ion
batteries, and there could be warranty issues.
That said, I expect KX3 owners would appreciate it if Elecraft offered
an internal Li-Ion battery for the KX3.
73,
Scott K9MA
--
Scott K9MA
[email protected]
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