PDAs now need to be in a Z level with a functioning Relay/Comms Network in order to send messages. It will also send uncompressed (scrambled) messages like you would with the ordinary voice messages.
I've gotten rid of the "in world" check for blackboxes, when there can only be one.
You can now easily send test signals to see if Telecomms is functioning for an atom. test_telecomms()
git-svn-id: http://tgstation13.googlecode.com/svn/trunk@4222 316c924e-a436-60f5-8080-3fe189b3f50e