On Mon,9/22/2014 10:11 AM, David Kozinn, K2DBK wrote:
The powering up things is of concern to me even for domestic travel.
Depending on the radio, the receivers in most 12V rigs will at least
turn on and run from a fresh stack of 9 AA cells. A K3 draws only 1A in
RX mode, +100mA with the 2nd RX. A KX3 draws a quarter of that. Another
option is a low capacity LiIon battery pack. This 6Ah pack sells for
about $65 prewired with Power Poles and weighs less than 2#. Note that
it's current-limited at 2A by the protection circuitry.
http://www.batteryspace.com/custom-lfp-18650-battery-12-8v-6000-mah-77wh-2a-rate-w-pcb-7-2.aspx
Or this one -- 5Ah, but output current limited to 10A, for $80, a few
ounces lighter.
http://www.batteryspace.com/lifepo4-battery-12v-5ah-60wh-10a-rate-with-led-indicator---replace-sla-12v-4-5ah-lighter-weight-and-higher-capacity----un38-3-passed.aspx
Both of these batteries have passed the safety testing that makes it
legal for them to be on an aircraft. There are many cheaper alternatives
from the same vendor that have not passed that testing.
73, Jim K9YC
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