This is the help file for Virtual Radar browser configuration


Dumaguete ADS-b Radar

Everything you need to know about VRS 2.1 and How To Do It.
First Time Configuration of VRS 2.1
First Time Configuration of VRS 2.1(Continued)Updated 5-15-2015


VirtualRadar Server (VRS), a program copyrighted by Andrew Whewell allows ADS-b aircraft tracking sites to share their data over the internet beyond their tracking computers. Unfortunately, it has been a mystery on how to present this information to the user this data is presented to. The default presentation was just marginally controlled by the ReBroadcaster. This has changed with the new version of VRS. This set of pages will allow the internet user make some sense what is being presented. Most unfortunately will not do this.

When one is initially referred to a VirtualRadar site, one is presented three sections on the main page. These are the Google map, List area and a Detail area.



Google Map

In the upper right hand corner of the map is a selector for the type of map which initially selected by the ReBroadcaster. The second selector with the word Menu is beside it. This is the selector that will allow you to make sense of what is being presented by the ReBroadcaster.



Selecting Options produces a screen with several tabs which effect one or more of the subdivided areas of the screen. As a starting point in a separate browser tab, open the site you have been referred to and set the configuration you see on the example screens here. Any changes will be written to your browser cache and will display properly as you set them here when you return to the referred URL



Missing Information in Google map, List, Detail & Report Views

ADS-b in many parts of the world is still optional and not all of the aircraft are equipped or the pilots do not wish to be tracked. ADS-b transponders on aircraft and receivers on the ground have about 250 nmi line of sight radius. Trees, buildings and mountains impact this radius. Receivers within the general area with different lines of sight aggregately can provide end to end tracking over a given area. If an aircraft disappears only to reappear after a short while it is probably due to one of the line of sight phenomena.

All basestation databases which provide information are basically local to the receiver you are watching. Just like any hobby, some will keep their database up to date. Others will have areas which are unpopulated. With the new version I keep my database.sqb up to date every night and offer it to those running VRS by email. The zipped size is about 13 megs and can be requested at ahomeboy2000AThotmail.com. I also have logos continuously added since last year.

Mode-S Only Aircraft Missing From the VRS Map

ADS-B aircraft transponders transmit latitude-longitude etc. If the aircraft is missing a callsign, the route is unknown and will not display on the VRS map since its coordinates are unknown. Likewise some older planes do not have the avionics to support ADS-B. They will still be listed in the List Area. Through the use of MLAT, FR24 is able to provide some information and tracking for Mode-S only flights for short periods when they are being tracked by four FR24 receivers for three moments in time . For the Philippines and most of Asia, MLAT5 is the name of the server whose name for bookmark purposes is T-MLAT5. The FR24 map of the Philippines is here. Flights tagged as UNKNOWN when clicked on will see MLAT5 is the attributed radar. ADS-B aircraft on the tarmac adjusting their ADS-B transponders will also be identified as UNKNOWN attributed to a local radar.

Receiver Range

The ability of an internet viewer to see a receiver range plot is determined by the Rebroadcaster. If it has been enabled, a selection is added to the Google map Menu selector called Receiver Range. If only one receiver is available when you select it, enable All Altitudes. If for example two receivers are available select All Altitudes for both and also 30000 for one of them. That will enable one to be a different color for the range plot on top or below the range plot of the other receiver. Be aware the Receiver Range is a historical plot and returns to startup state if the serving site goes down or if the server reboots on the previous version. VRS version 2.1 saves these plots on your server every 60 minutes and when the internet viewer accesses your page the full historical plot is displayed.

The Reports

If the ReBroadcaster has enabled Reports in the configuration, Reports are made possible through the Database Writer plugin and create reports from the receiver or Merged receivers. The Reports likewise plot from midnight to midnight unless the server goes down or reboots. If for some reason you stop and restart the VRS server, the reports will show the flights detected just from that time instead of from Midnight. Not configuring the Database Writer for a receiver or Merged receivers will result a report that has no flights detected.

My browser settings have reset the next time I access the webpage.

If you use cache cleaning software like Ccleaner or delete your browser cache all your settings you have made will be lost and you will have to reinvent the wheel viewing previous versions of Virtual Radar Server sites. In the configuration of the cleaner software exclude your default browser and you won't have problems.