[Elecraft] Solar power for the K2

[Kenneth A. Christiansen]

I got into some wrong notes this morning. 600 MA is the amount adding 
the KPA-100 adds to the K3 during key down or transmit conditions. My 
earlier measurements were the right ones. I have the larger solar 
controller from Don Brown KD5NDB  and it works well with an AC power 
supply I use to keep my battery charged. I have been using this for 6 
years and now wonder if any advances have been made in solar cells so a 
ham can use them. I looked up a 70 watt solar panel on the internet and 
it was $500. I can't justify that and don't have any idea if it is even 
small enough to take car camping. Does anyone have any suggestions for 
solar power or do I just need to buy a second large battery?
Thanks and 73

Ken W0CZ