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Re: [CQ-Contest] Travelling for Contests or Dxpeditions

To: cq-contest@contesting.com
Subject: Re: [CQ-Contest] Travelling for Contests or Dxpeditions
From: Jim Brown <k9yc@audiosystemsgroup.com>
Reply-to: k9yc@arrl.net
Date: Mon, 22 Sep 2014 12:21:12 -0700
List-post: <cq-contest@contesting.com">mailto:cq-contest@contesting.com>
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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