data on an interactive
[ Wait for
the Java Security Certificate window to appear. Click 'Yes'/'Run'
and then Scroll down the page where the maps are!
RF Feed via VU2MUE
on 144.800 MHz]
page demonstrates ham radio capability in penetrating the Internet
to serve useful purposes. This is a live APRS data feed page.
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
just get a feel of how APRS activity is going on at other parts
of the world here are a few links:
WA4DSY | |
SV1CNS | |
Radio & Beyond!
On the New Delhi map displayed below, we can see hams doing
communication [If they wish they may talk or otherwise exchange
APRS digital data using their radios]. If they transmit APRS
digital data on 144.800 MHz [which is
frequency], a radio hooked to the Internet can pick up the radio
signal and in-turn feed the data to the Internet. During this demo,
in a simulated exercise, the mobile station VU2MUE-9
[In most probability this may be during a demonstration
only. So if you don't see VU2MUE-9 on the map please feel free to
appears on the map from RF
originated data. There may be position reporting from
Non-RF originated stations also. The station WB4TLP
appearing with a WX icon is a ham
weather station feeding weather data to Internet and
these data are also available on the Internet map for utility.
How to use the map?
 Wait for the map to fully load [121 kb]
 If a message like 'allow
the Signed Java Applet to run' appears. Do that by clicking
'YES' or 'RUN'.
 Click on the map to activate
the JAVA controls [only for IE7].
 Initially VU2MUE would not
appear. This means that the automatic position beacon from VU2MUE
is not yet sent. Have patience till the beacon is sent. There are
different beacon rates used by different stations depending on speed
and necessity. The icon may also not come on the map if VU2MUE does
not position report.
 When VU2MUE-9
SSID of VU2MUE] appears on the map, 'CLICK' it. A small
text line below the map tells the position information of the mobile
station. It not only tells the position information but also tells
other information like Speed of the vehicle,
direction of travel [course], AMSL [Altitude,
i.e. Above Mean Sea Level] etc. If a text message
is sent, the message can also be read.
 To read messages. Press
the 'M' key. Pressing M key writes the messages
to the 'Java Console'.
Where to find the Java console?
The JAVA CONSOLE
can be opened from Internet Explorer Browser's TOOLS > SUN
opening the map?
If your browser is not JAVA enabled, the map would not load.
Download JAVA 2.0 Runtime environment. If you get an 'Error opening
Data' message in the browser status bar, it may be due to a LAN
proxy connection where the appropriate ports are not open.