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 KM4RZT-4 - show graphs
Comment: Testing truck antenna.
Location: 42°51.75' N 71°17.25' W - locator FN42IU57LA - show map
5.4 miles West bearing 261° from Hampstead, Rockingham County, New Hampshire, United States [?]
7.3 miles West bearing 283° from Atkinson, Rockingham County, New Hampshire, United States
36.7 miles North bearing 342° from Boston, Suffolk County, Massachusetts, United States
38.5 miles North bearing 342° from South Boston, Suffolk County, Massachusetts, United States
Last position: 2025-01-24 13:20:28 EST (16d 11h56m ago)
2025-01-24 13:20:28 EST local time at Hampstead, United States [?]
Course: 35°
Speed: 2 MPH
Device: aprs.fi: iPhone/iPad app (app, ios)
Last path: KM4RZT-4>APFII0 via WIDE1-1,WIDE2-1,qAR,KA1GJU-3 (good)
Positions stored: 41
Other SSIDs: KM4RZT-H KM4RZT-7 KM4RZT-9 KM4RZT-9 KM4RZT-i KM4RZT-1
Stations near current position of KM4RZT-4 - show more
callsign distance last heard - EST      callsign distance last heard - EST
EW90650.3 miles 67°2025-02-10 01:15:25 Lampton0.6 miles 61°2025-02-10 01:15:22
KB1UVD B1.9 miles 23°2025-02-10 01:01:58 KB1UVD-B1.9 miles 23°2025-02-10 01:02:08
N1QGM B2.4 miles 302°2025-02-10 01:04:53 N1QGM-B2.4 miles 302°2025-02-10 01:05:03
FW92062.8 miles 233°2025-02-10 01:09:02 W1ANC-92.9 miles 287°2025-02-01 16:45:35
AC1KJ-103.1 miles 283°2025-02-10 01:02:35 AA1WC3.2 miles 187°2025-01-25 16:06:05
KK7FJX B3.2 miles 186°2025-01-24 07:19:33 KK7FJX-B3.2 miles 186°2025-01-24 07:19:43
FW90773.3 miles 72°2025-02-10 01:16:32 EW03623.7 miles 236°2025-02-10 01:17:05
N7FMH-33.9 miles 240°2025-01-24 14:48:58 KB1PJD-44.1 miles 301°2025-01-26 17:33:04
W1WAH-104.1 miles 194°2025-02-10 00:47:27 W1WAH-14.2 miles 194°2025-01-13 19:35:39
W1WAH-74.2 miles 194°2025-02-05 13:29:04 W1WAH-94.2 miles 194°2025-02-08 20:24:46
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