Can I broadcast MIDI to multiple receivers in different locations?

 No. Each MIDIjet Pro transmitter will only communicate with a single MIDIjet Pro Receiver. You cannot have 1 transmitter sending to 2 receivers. MIDIjet Pro uses a two-way protocol - the transmitter and receiver are constantly exchanging status information. Furthermore, a transmitter is "bound" to a single receiver - see the user's manual for further details.