BH9BZB I used a MA-12 antenna and a 20m feedline, a 15m 50-3 line, and a gum battery – all in one backpack!
BH9BZB pmxlbt With a battery, you can listen to calls at a ratio of 3:1, and it should last for about 3 hours. Personally, I think it's sufficient. The battery should be chosen based on your usage frequency.