[CQ-Contest] Travelling for Contests or Dxpeditions

[Jim Brown]

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