You will need to download the Field Broadcast Pinger to view these broadcasts. This will sit in the bottom right hand corner of your desktop and when a broadcast goes live it will 'ping' loudly and display the incoming broadcast in a window in the middle of your screen.
The Pinger is simple to install. Just click the link above and follow the on screen prompts. If you have problems try this direct link but first you will need to install Adobe AIR runtime if you do not already have it. The Pinger can be uninstalled at any time like any other software.
Further Information about the software