Location:	38°52.01' N 77°06.39' W - locator FM18KU78FA - show map 4.2 miles Southwest bearing 243° from Washington, D. C., Washington, D.C., United States [?] 5.3 miles Northwest bearing 323° from Alexandria, City of Alexandria, Virginia, United States 6.7 miles Northwest bearing 300° from Glassmanor, Prince George's County, Maryland, United States 39.5 miles Southwest bearing 222° from Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-01-08 20:11:26 EST (23d 23h7m ago) 2025-01-08 20:11:26 EST local time at Washington, D. C., United States [?]
Altitude:	238 ft
Speed:	26 MPH
Device:	Icom: IC-5100 (D-Star)
Last path:	W4JJ-9>API510 via DSTAR*,qAR,W4HFH-C
Positions stored:	724
Other SSIDs:	W4JJ-D W4JJ-N W4JJ-B W4JJ-C

callsign		distance	last heard - EST		callsign		distance	last heard - EST
W4JJ B		0.7 miles 114°	2025-01-04 18:12:38		W4JJ-B		0.7 miles 114°	2025-01-04 18:12:48
W4JJ-N		0.7 miles 114°	2025-01-05 22:39:52		W4JJ-D		0.7 miles 114°	2025-02-01 13:57:02
FW9822		1.0 miles 7°	2025-02-01 19:15:36		KM4DC-10		1.2 miles 239°	2025-02-01 18:23:48
CW8838		1.3 miles 150°	2025-02-01 19:13:46		KM4MLA-Y		1.8 miles 358°	2025-01-07 08:24:53
KK1ZZ		1.8 miles 12°	2025-01-29 20:33:34		FW1583		2.1 miles 268°	2025-02-01 19:11:37
WA1EM		2.2 miles 229°	2025-01-22 22:00:05		WA1EM		2.2 miles 228°	2025-01-20 08:02:04
WA1EM-10		2.2 miles 228°	2025-01-21 09:18:17		KK4MBI		2.2 miles 334°	2025-01-24 22:02:08
W4DSF-9		2.3 miles 340°	2025-01-04 13:27:55		KN4TSA-9		2.7 miles 155°	2025-01-22 18:17:57
K4AF-6		2.8 miles 84°	2025-02-01 14:49:46		KC7OVS-7		3.0 miles 106°	2025-01-29 16:39:29
W4HFH A		3.0 miles 179°	2025-02-01 19:14:12		W4HFH AD		3.0 miles 179°	2025-02-01 19:14:13

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.