Re: Hunting extras
We use a good commercial brand radio system (can't remember the brand, they belong to a friend). There are 4 of us and two use one channel and two use another. No one talks first, you key the mike and wait for a reply. If you don't get one, your partner is watch something and you keep waiting. If it's clear he'll answer.
"If you can't explain it to a six year old, you don't understand it yourself." Albert Einstein