[Elecraft] X-Dragon 20W Solar Panel

[David Ahrendts]

Well, let’s broaden the convo. Who successfully uses solar to operate KX3 QRP? What’s the system? 

> On Apr 21, 2015, at 10:24 AM, Fred Townsend <fptownsend at earthlink.net> wrote:
> 
> David: You mean take out the batteries and charge them one at a time? I
> don't think so.
> 
> The X-Dragon ads rate high on the snake oil scale. Note all ratings are max,
> not typical. They say 5v / 2.4a. Don't assume you can ever get those
> parameters at the same time. My guess it is 5V open circuit or 2.4 amps
> short circuit. Note also they never indicate how long it takes to charge a
> cell phone. They also proclaim high efficiency. How high is high? If you are
> an ant everything is high. You can bet whatever they measure is figuratively
> done while running downhill with the wind at your back.
> 
> There are appropriate  chargers out there. I would suggest a ham radio
> knowledgeable seller like Buddy Pole.
> 73
> Fred, AE6QL
> 
> -----Original Message-----
> From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of David
> Ahrendts
> Sent: Tuesday, April 21, 2015 9:10 AM
> To: Bob N3MNT
> Cc: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] X-Dragon 20W Solar Panel
> 
> Maybe charge your batteries to run the KX3.
> 
>> On Apr 21, 2015, at 9:05 AM, Bob N3MNT <bob at hogbytes.com> wrote:
>> 
>> Specs don't show it being able to power a KX3.
>> * Solar Power: 20W sunpower solar panel
>> * Transformation efficiency: 22%-25%
>> * Output 1: 5V2.4A(Max)
>> * Output: 2: 5V2.4A(Max)
>> 
>> 
>> 
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> 
> 
> David Ahrendts   davidahrendts at me.com   
> 
> 
> 
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David Ahrendts   davidahrendts at me.com