A couple participants here used the combox to coordinate a contact. HERE
There wasn’t much success because of lousy propagation, but it was instructive. We moved from frequency to frequency on the fly using the combox. (Which means you need to refresh! And you need to check back!)
Use this post to organize your contacts!
If you can, post with some times in UTC. Post frequencies and when you will be listening.
Work it out! We will learn as we go.
I will be on the road and away from my station. I might try Echolink.