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 KC1SDV-9 - show graphs
Comment: 146.670MHz 146.520
Mic-E message: Off duty
Location: 42°23.15' N 71°36.25' W - locator FN42EJ72LO - show map
3.9 miles Northwest bearing 310° from Marlborough, Middlesex County, Massachusetts, United States [?]
5.0 miles North bearing 22° from Northborough, Worcester County, Massachusetts, United States
27.8 miles West bearing 274° from Boston, Suffolk County, Massachusetts, United States
28.5 miles West bearing 277° from South Boston, Suffolk County, Massachusetts, United States
Last position: 2024-10-11 16:36:22 EDT (24d 11h48m ago)
2024-10-11 16:36:22 EDT local time at Marlborough, United States [?]
Altitude: 305 ft
Position ambiguous: Precision reduced at transmitter by 1 digits, position resolution approximately 202.3 yards.
Course: 123°
Speed: 0 MPH
Device: Yaesu: FTM-300D (rig)
Last path: KC1SDV-9>TRRS1Z via W1MRA*,WIDE2-1,qAR,N4GIH-2 (good)
Positions stored: 555
Stations near current position of KC1SDV-9 - show more
callsign distance last heard - EST      callsign distance last heard - EST
W1CJV-92.1 miles 64°2024-11-04 20:14:08 W1CJV-73.0 miles 58°2024-10-30 17:30:05
W1HS-143.1 miles 165°2024-10-15 08:41:34 KC1OED C3.3 miles 357°2024-11-04 09:43:42
KC1OED-C3.3 miles 357°2024-11-04 09:43:52 W1MRA-B3.3 miles 146°2024-11-05 03:10:42
W1MRA B3.3 miles 146°2024-11-05 03:10:57 W1MRA3.3 miles 146°2024-11-05 03:23:37
KJ6SML3.4 miles 216°2024-11-05 03:15:07 W1KU-73.5 miles 213°2024-10-31 23:32:57
N2IOF-93.8 miles 120°2024-10-31 23:15:40 446.6753.8 miles 136°2024-10-27 20:00:33
449.9253.8 miles 136°2024-11-04 22:40:02 W1KU-23.9 miles 202°2024-11-05 03:14:24
FW32603.9 miles 108°2024-11-05 03:20:18 W1RBO4.2 miles 70°2024-11-05 03:15:05
GW08834.2 miles 28°2024-11-05 03:20:22 EW79874.2 miles 92°2024-11-05 03:20:11
KB1EMU-64.2 miles 11°2024-11-03 14:26:18 KB1EMU-104.2 miles 11°2024-11-05 03:22:29
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