The Radars tend to be located in remote location with poor communications. A permanent Internet connection is not possible, instead a Serial Line Internet Protocol) connection is created over a conventional telephone line. As APL has to pay the bill, the SLIP connection is not held open permanently and is only created when someone wishes to view data from a Radar.

As a security measure, the SLIP connection can only be created by registered users who have a valid account at this site. However, while the SLIP connection is up, any user can log into the Radar. Once all the users have logged out the connection is automatically dismantled.

The Radars that support the Real Time Display are listed at the top of this page. In addition there is a demonstration version of the display that uses off-line data read from a file. The Display Applet can be started by clicking on the appropriate link. However if the SLIP link is down you will not receive any data from the Radar.

Instructions on how to use the display are available here.

The status of the link is shown in the black boxes. If the last attempt at a connection failed then the indicator will read "At Fault", however this may simply be caused by a bad line and you can still attempt to make a new connection. When the indicator reads "Up" Real Time data is available and can be viewed using the display.