APRS map
[ map refreshes every 10 minute]

APRS® is the Registered Trademark of
Bob Bruninga WB4APR US Naval Academy

javAPRS 2.7b24 © 2006 Pete Loveall AE5PL

Sorry, your browser doesn't do Java!

Map Courtesy: Google Visit: http://aprs.fi/
Clicking on a station shows its information in the status bar.
[distance and bearing from base station VU2MUE ]

This page demonstrates ham radio capability in penetrating the Internet to serve useful purposes. This is a live APRS data feed page. APRS® stands for Automatic Position Reporting System. But this is not to be mistaken just as a mere automatic vehicle tracking system. It is real-time two way digital radio communication where many of the vital information are exchanged almost automatically. Non-hams can monitor ham radio APRS digital communication using this type of Internet web page.

APRS benefits

  • Accurate position information about mobile & fixed stations.
  • Direction finding for precise beaming.
  • Tracking a mobile station [useful during emergency operation/tactical situation when prompt receipt of information about positions and progress of mobile stations is of utmost necessity for efficient coordination]
  • Line-of-Sight Distance and bearing of stations from base station available just at the click of a button.
  • Monitoring of 'radio to radio digital text messages' on an Internet browser. Non-ham family members of a ham can track him/her and read messages. During emergencies, if the Internet does not fail, this would help non-hams to monitor emergency messages.
  • Monitoring of real-time weather information originated from ham radio weather stations [Real-time Weather information like Wind Speed, Wind Direction, Temperature, Barometric Pressure, Humidity, Rainfall etc. are available on this map with just the click of a button.
  • Plotting of objects on the map. For example an accident site, crash site, intimation about a traffic jam for route planning, fire site, flood, cyclone, land-slide, road blockage or information about a ham radio event etc.
  • Allows important information to be exchanged without human intervention. This is important during a tactical or emergency situation, when we need to concentrate on other important jobs [for example 'Search & Rescue'].
  • Reduces voice traffic by avoiding repetitive conversations and thus economical use of the radio bandwidth. [e.g. What is your name/call-sign? [QRA/QRZ?]/Where are you? [ QTH? ]/Tell me your location so that I can turn my Yagi beam Antenna towards you/What is your e-mail?/Where are you going?/Are you busy?[ QRL?]/What is the height of your antenna/building?/How far you are from me?/In which direction you are now moving?/At what speed you are traveling?/what is the wind direction and wind speed?/What is the Temperature?/Is there any rainfall today?/What is the barometric pressure at your place......

javAPRS Commands (Case Insensitive) for the above map

zooms up (wider view)
zooms down (narrower view)
lists stations heard to the Java console
lists only weather station reports to the Java console
lists beacons to the Java console
lists ID reports to the Java console
lists last 25 messages to the Java console
centers map on clicked location
zooms in on clicked location
Arrow keys
scrolls map

Tips to adjust the map

It may not require to 'zoom in' the map [ ALT + CLICK the point/station you want to 'Zoom In' ] if too many stations don't clutter in a small area. In case if you 'Zoom In' too much and want to restore the map back to its normal size and position [without refreshing the page, because 'refreshing' removes all the stations till they position report the next time ], use the 'Page Up' or 'Page Down' keys' and may be combinations of Left/Right/Up/Down Arrow keys.

Once you get a significant portion of the map visible, CTRL + CLICK at the centre of the map. On the New Delhi map, this is the 'green area marked as NEHRU PLACE'. The map should be placed in its normal position within the applet area.