Phil,
I had posted this to the KX3 list a few months back. I have a Bioenno
LiFePO4 12V/12A (BLF-1212W) battery pack for my KX3 station. The battery
is powering the KX3, my KXPA100 at full power and a pair of West
Mountain Radio amplified speakers (the new PX3 was not in the mix). I
have been testing on 160M with the group I hang around with and I have
been doing a lot more transmission cycles than normal (usually on 3 or
4 hams in the group) so I am transmitting frequently. I terminated the
test when I reached 11V as indicated on the KX3 and this is the amount
of operating I was able to get on a single charge.
Day 1 3 hours
Day 2 2 hours
Day 3 2 hours
Day 4 2 hours
Day 5 1/2 hour plus 3 additional hours on receive.
Even at the end no untoward issues with the signal was reported. Pretty
pleased so far for such a small battery.
Gary Mitchelson
NC3Z/4 Pamlico County, NC FM15
www.mitchelson.org
On 5/26/2015 13:13, Phil Hystad wrote:
I don’t have a KXPA100 yet to go with my KX3 but when I get one (soon) it will
be used almost entirely in portable operation off batteries — in particular:
A123 Lithium battery packs. Currently have two 2.5 Amp-Hour packs and will be
buying at least one 7.5 Amp-Hour pack (maybe two).
Although many times I will be able to recharge my battery packs in the field
(maybe not always conveniently) I would like to know about how much time (in
real operating practice) I would expect from, let’s say 5 amp-hours of
available charge.
I could do computations and estimate duty cycle but I would also like to have
real-world experience if someone has done something similar.
My operating configuration would be: CW only and operating with enough power
out to make good contacts (maybe only 50 watts or so). Currently, I have been
limited to QRP to 10 watts on my KX3 and a number of times I had wanted more
power — thus my motivation for using this amplifier and battery power.
Thanks for any help you can provide — actual field experience preferred.
73, phil, K7PEH
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