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 BI1BTZ B - show graphs
Map loading...
Source callsign: BI1BTZ-S
Comment: 440 Voice 435.07500MHz +0.0000MHz
Location: 40°01.98' N 116°20.16' E - locator ON80EA07HW - show map - static map
9.3 miles North bearing 340° from Beijing, Beijing, China [?]
16.5 miles Northwest bearing 302° from Tongzhou, Beijing, China
76.1 miles Northwest bearing 324° from Tianjin, Tianjin Shi, China
Last position: 2018-06-20 07:59:49 EDT (154d 1h35m ago)
2018-06-20 19:59:49 CST local time at Beijing, China [?]
Last path: BI1BTZ-S>APDG01 via TCPIP*,qAC,BI1BTZ-GS
Positions stored: 3
Stations near current position of BI1BTZ B - show more
callsign distance last heard - EST      callsign distance last heard - EST
BH1NMZ-70.8 miles 211°2018-11-19 08:53:55 BH1ONQ-91.7 miles 1°2018-11-18 04:08:35
BI1BDS-71.8 miles 234°2018-11-19 19:59:43 BI1BDS-92.3 miles 288°2018-11-19 20:14:33
BH1QNX-62.3 miles 250°2018-11-01 09:27:47 BI1ACW-102.4 miles 266°2018-11-06 08:53:20
BD1RT-92.7 miles 41°2018-11-09 11:30:11 BH1KAU2.7 miles 324°2018-11-10 07:01:00
BH1HWO2.7 miles 329°2018-10-23 22:21:16 BH1KAU-52.7 miles 324°2018-11-21 06:24:46
BI1HQL-132.7 miles 217°2018-11-21 08:33:50 BI1BDS-142.8 miles 288°2018-11-06 20:46:06
BI1HQL-102.8 miles 217°2018-11-21 08:33:48 BH1HWO-102.9 miles 320°2018-11-21 07:39:26
BH1XWF2.9 miles 193°2018-11-21 08:35:23 BI1BDS3.0 miles 289°2018-11-01 02:24:10
BG1CNX-13.1 miles 183°2018-11-21 08:31:15 BG4DPM B3.2 miles 114°2018-11-03 21:58:32
BG4DPM-B3.2 miles 114°2018-11-03 21:58:42 BG4DPM-N3.2 miles 114°2018-11-03 21:58:22
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.
FAQ · Blog · Discussion group · Linking to aprs.fi · AIS sites · Service status · Database statistics · Advertising on aprs.fi · Technical details · API · Change log · Planned changes · Credits and thanks · Terms Of Service · iPhone/iPad APRS