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 station BI4UMD-R - show graphs
Comment: 70cm MMDVM Voice (C4FM) 438.80000MHz -5.0000MHz, BI4UMD_Pi-Star_RPT
Location: 32°12.00' N 119°42.00' E - locator OM92UE48AA - show map
5.4 miles Southwest bearing 216° from Xinba, Jiangsu Sheng, China [?]
7.3 miles West bearing 248° from Sanmao, Jiangsu Sheng, China
54.8 miles East bearing 80° from Nanjing, Jiangsu Sheng, China
81.2 miles Northwest bearing 320° from Suzhou, Jiangsu Sheng, China
Last position: 2024-03-04 09:03:18 EST (90d 17h39m ago)
2024-03-04 22:03:18 CST local time at Xinba, China [?]
Altitude: 0 ft
Device: Jonathan, G4KLX: ircDDB Gateway (D-Star)
Last path: BI4UMD-R>APDG03 via TCPIP*,qAC,BI4UMD-RS
Positions stored: 7
Other SSIDs: BI4UMD BI4UMD-7 BI4UMD-5 BI4UMD-N BI4UMD-Y BI4UMD-2 BI4UMD-10
Stations near current position of BI4UMD-R - show more
callsign distance last heard - EDT      callsign distance last heard - EDT
BG4XTW-84.9 miles 34°2024-06-03 03:13:29 BH4WAL-35.2 miles 35°2024-06-03 03:42:22
BR4SYZ-105.3 miles 44°2024-05-21 10:52:56 BH4WAL-65.8 miles 67°2024-06-03 01:42:57
BG4XTW-106.0 miles 62°2024-06-03 03:32:55 BH4WAL B6.0 miles 65°2024-06-03 03:32:14
BH4WAL-B6.0 miles 65°2024-06-03 03:32:24 BI4TAM-86.3 miles 69°2024-05-30 04:08:20
BG4WAH-87.2 miles 74°2024-05-30 23:59:26 BH4WAL7.3 miles 69°2024-05-14 11:49:54
BG4XUK8.1 miles 72°2024-05-15 07:39:10 BH4WAL-118.2 miles 72°2024-06-02 22:57:29
BH4WAL-128.2 miles 72°2024-05-11 05:53:32 BH4WAL-58.2 miles 72°2024-06-01 07:48:22
BH4WCW-88.3 miles 190°2024-06-03 03:37:21 BG4WAH-109.3 miles 64°2024-06-03 03:41:47
BI4UMB9.9 miles 320°2024-05-31 08:09:41 BD4QKX-910.3 miles 73°2024-05-31 04:45:59
BH4WCW-1013.0 miles 201°2024-06-03 03:23:35 P-BD4TGF13.7 miles 266°2024-06-03 03:01:05
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 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