[Elecraft] Good experiance using the K3-100 on battery power

[Leigh L. Klotz, Jr WA5ZNU]

On WB6ZQZ's advice I got one of 40A "RV charger" power supplies on eBay 
and use it with a Group 24 battery from Tempost.  I bought the charger 
refurb and saved some money.  It made a faint noise on some bands with 
no antenna attached, so I put a big #31 ferrite toroid on the output and 
it's quite quiet now.
http://www.eham.net/reviews/detail/6848

Leigh/WA5ZNU
> Jim Brown K9YC wrote:
> ...In my shack at home and on Field Day, I've always run my ham gear from 
> a big Costco deep cycle battery that is float charged from a little 
> regulated 10A supply ($10 at a hamfest). It's a poor man's UPS, and 
> works fine. ...