Patience, persistence, and the ability to take 220 VAC and get up to do it again.
Ham radio is fun and good communications. See my Ham Radio page.
Good Hunting... from Varmint Al
That'll set your teef on edge, if you have 'em.
DISCLAIMER: Relying on the bounce off the wall/ceiling to restart your heart is contraindicated. High voltage is dangerous. Batteries not included. Your mileage may vary.