Station info for BI4AJM-15 – aprs.fi

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APRS igate – Statistics for 2025-12:
Comment:	E1[@144.640Mhz.南天门计划地球遥测站]
Location:	30°54.55' N 121°14.77' E - locator PM00OV98ME - show map 4.6 km Southeast bearing 129° from Maogang, Shanghai Shi, China [?] 7.8 km Southwest bearing 239° from Yexie, Shanghai Shi, China 40.2 km Southwest bearing 210° from Shanghai, Shanghai Shi, China 124.3 km Northeast bearing 56° from Hangzhou, Zhejiang Sheng, China
Last position:	2025-12-31 19:10:47 UTC (7m52s ago) 2026-01-01 03:10:47 CST local time at Maogang, China [?]
Altitude:	10 m
Device:	Telemetry devices
Last path:	BI4AJM-15>APE32I via TCPIP*,qAC,APRSTH
Positions stored:	640
Other SSIDs:	BI4AJM-14 BI4AJM-3 BI4AJM-2 BI4AJM-7 BI4AJM-D BI4AJM-1 BI4AJM-5
Stations heard directly:	11 on radio path – show map
Last heard a station directly:	2025-12-31 19:11:39 UTC (7m ago)
Normal receiver range estimate:	40 km (Updated: 2025-12-31 17:11:39 UTC)
Position packets heard directly:	4174 on radio path
Position packets sent to APRS-IS:	4318 – show map

callsign		pkts	first heard - UTC	last heard	longest	(tx => rx)	longest at - UTC

Only position packets which were originated by the station are shown here. The range statistics show some extra long hops, because some digipeaters do not correctly add themselves to the digipeater path. Please check the raw packets.

callsign		pkts	first heard - UTC	last heard	longest	(rx => tx)	longest at - UTC

Only stations from which a position packet has been heard are shown here. The range statistics show some extra long hops, because some digipeaters do not correctly add themselves to the digipeater path. Please check the raw packets.

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.