I bought a wall wart, cheep when if first got my BITX40.. from ALLELECTRONICS.COM because-- always a because --it was cheep, had the power connector on it and-----AND--- I also needed to order other items for my build ---and ALLECLECTONICS.COM had them.. Matching knobs both 1/8 and 1/4 diameter for the pots, a speaker, and other odds and ends.. such a 12MHz crystals 4 for a $1....which I will experiment with the BITX40. They have a flat rate shipping so..
The point I am making is that I've been using that wall wart since...you can't but the parts to build one for what I got this.. Besides if I get ambitious, venturing further, a battery based system would be in order..
