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 K4HCO-9 - show graphs
Comment: 146.520MHz On N3JLT Repeat
Location: 38°48.44' N 77°38.31' W - locator FM18ET33JS - show map
0.3 miles South bearing 199° from Haymarket, Prince William County, Virginia, United States [?]
1.6 miles Northwest bearing 301° from Gainesville, Prince William County, Virginia, United States
32.9 miles West bearing 260° from Washington, D. C., Washington, D.C., United States
64.4 miles Southwest bearing 239° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2025-01-25 15:37:34 EST (13h8m ago)
2025-01-25 15:37:34 EST local time at Haymarket, United States [?]
Altitude: 213 ft
Course: 27°
Speed: 37 MPH
Last telemetry: 2023-06-18 13:18:36 EDT (587d 16h27m ago) – show telemetry
Ch 1: 410, Ch 2: 630, Ch 3: 0, Ch 4: 0, Ch 5: 0
Device: Open Source: APRSdroid (app, Android)
Last path: K4HCO-9>APDR16 via TCPIP*,qAC,T2EDM
Positions stored: 53681
Packet rate: 35 seconds between packets on average during 1460 seconds.
Other SSIDs: K4HCO-10 K4HCO-2 K4HCO-Y
Stations near current position of K4HCO-9 - show more
callsign distance last heard - EST      callsign distance last heard - EST
FW21230.6 miles 157°2025-01-26 04:40:51 FW43312.9 miles 156°2025-01-26 04:30:54
N3UC3.6 miles 340°2025-01-26 04:45:16 FW91334.7 miles 320°2025-01-26 04:46:00
EW70604.9 miles 329°2025-01-26 04:40:23 FW94635.1 miles 126°2025-01-26 04:44:26
KJ4YNM-25.6 miles 121°2024-12-31 15:43:03 DW73255.8 miles 173°2025-01-26 04:45:53
KE7EX-56.1 miles 122°2025-01-17 14:05:59 KE7EX-106.1 miles 122°2025-01-25 23:11:23
WC4J6.2 miles 99°2025-01-26 04:43:35 DW13546.3 miles 345°2025-01-26 04:46:08
WC4J-146.4 miles 100°2025-01-05 16:06:39 GW31146.7 miles 14°2025-01-26 04:36:48
KN4GDX B7.2 miles 237°2025-01-26 04:28:04 KN4GDX-B7.2 miles 237°2025-01-26 04:28:14
W4BRM7.2 miles 333°2025-01-26 04:33:50 W4OVH-C7.3 miles 103°2025-01-26 04:36:03
W4OVH-B7.3 miles 103°2025-01-26 04:36:02 W4OVH B7.3 miles 103°2025-01-26 04:36:17
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