I received about the same number of similar comments off-list as you've seen on-list. (Thanks!) So at least twenty of us would eagerly buy such an upgrade to the KX3 (see my previous post, below).

I suspect that the Elecraft folks don't have the bandwidth to work on such a thing right now. If we want it bad enough, we might need to take it into our own hands.

If any of you out there have mad CAD skills, and are looking for a project, contact me off-list. Perhaps we can do a little feasibility study by drafting a preliminary design of a KXBC3 replacement.


On 10/6/20 2:28 PM, Paul Maciel wrote:
Hi Steve,

Yes, I would like to see this.  I no longer even bother installing the internal batteries but just carry along a Bioenno pack.

I have not heard of any 3rd party solutions.

---Paul AK1P

On 10/5/2020 5:47 PM, Steve KC6ZKT wrote:
The KX3 is my favorite of my HF radios right now. But one of my annoyances is the internal battery limitations.

I always wind up carrying an external 6_Ah or 10_Ah LiFePo4 battery into the field when I use this radio, an external charge controller, and solar panel. It's not a big problem, but it also should not be a big project to improve this situation. The KXBC3 has enough real estate to include a lithium battery charger, and even a solar charge controller in its space. The amount of battery energy that could fit in-place of the NiMH cells could approximately triple the capacity of the AA cells.

So I have these questions:

1) How many of you out there might buy an upgrade which replaces the KXBC3 board with a lithium battery manager, and a associated battery pack?

2) Are there any 3rd parties already making anything like this?


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