IBB operates a network [map] of over 70 remote monitoring systems [RMSs] in order to determine and demonstrate the audibility of its own and others' broadcasts.

Each RMS consists of an antenna, a radio and a computer attached to the internet. A simple text file script is used by the computer to collect and encode sound samples and bandscan information from the radio.

Data collected by each RMS is then sent via email to one or more servers in Washington and overseas and made available through this webpage.

If you would like to hear samples of your broadcasts from the RMS network and can host a system for us, please email bw@his.com. RMS requests should be sent to us in the format on this page.

You can hear sounds and see bandscans by visiting this webpage.

There you will find columns representing the five areas we divide the world into -- africa, america, asia, europe and nea.

The picture to the right shows what the information means and which icon to click for sounds, bandscans and status.

Each area is handled by a separate server. Sounds and scans are selected through a two-step database query.

Tutorials for retrieving sounds and bandscans are also available.