Station info - map view · info · telemetry · weather · raw · status · beacons · messages · bulletins · browse · moving · my account
Callsign, ship name or locator: Clear       
It is possible to search using wildcards (*?) after a prefix. Example: OH*
APRS object WB4CDH B - show graphs
Map loading...
Source callsign: WB4CDH-S
Comment: 440 Voice 446.87500MHz +0.0000MHz
Location: 20°00.00' N 86°00.00' W - locator EL70AA00AA - show map - static map
70.6 miles Southeast bearing 120° from San Miguel de Cozumel, Quintana Roo, Mexico [?]
82.3 miles Southeast bearing 122° from Playa del Carmen, Quintana Roo, Mexico
Last position: 2020-09-27 01:00:57 EDT (18s ago)
2020-09-27 00:00:57 EST local time at San Miguel de Cozumel, Mexico [?]
Last path: WB4CDH-S>APDG01 via TCPIP*,qAC,WB4CDH-GS
Positions stored: 44
Others sourced by WB4CDH-S: WB4CDH C
Stations near current position of WB4CDH B - show more
callsign distance last heard - EDT      callsign distance last heard - EDT
WB4CDH-B0.0 yards 0°2020-09-27 01:01:07 WB4TCH B0.0 yards 0°2020-09-07 10:30:00
WB4TCH-B0.0 yards 0°2020-09-07 10:30:10
About this site
This page shows real-time information collected from the Automatic Position Reporting System Internet network (APRS-IS). APRS is used by amateur (ham) radio operators to transmit real-time position information, weather data, telemetry and messages over the radio. A vehicle equipped with a GPS receiver, a VHF transmitter or HF transceiver and a small computer device called a tracker transmits it's location, speed and course in a small data packet, which is then received by a nearby iGate receiving site which forwards the packet on the Internet. Systems connected to the Internet can send information on the APRS-IS without a radio transmitter, or collect and display information transmitted anywhere in the world.
User guide · FAQ · Blog · Discussion group · Linking to · AIS sites · Service status · Database statistics · Advertising on · Technical details · API · Change log · Planned changes · Credits and thanks · Terms Of Service · iPhone/iPad APRS