I'm testing out the demo version of Proclaim and playing around with signals, but I am not able to either push them out or connect to them. Is this only available after I've purchased the On Air licence? Just wondering...
No, signals should be able to be broadcast from a non-licensed group.
Do you have an active internet connection on both the Presentation computer and on your mobile device? You'll need one on both to broadcast and receive signals.
Be sure that you are running the Bible! app and have Location Services enabled to pick up signals, as well as going On-Air on the presentation computer (signals are not broadcast in Preview mode).