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APRS station JA4WTZ-9 - show graphs
Comment: 433.000MHz 145MHz、DCR 受信中
Location: 34°41.11' N 135°39.37' E - locator PM74TQ84RK - show map
8.5 km Southeast bearing 129° from Kadoma, Ōsaka, Japan [?]
9.8 km Southeast bearing 123° from Moriguchi, Ōsaka, Japan
14.1 km East bearing 94° from Ōsaka-shi, Ōsaka, Japan
43.2 km East bearing 91° from Kōbe-shi, Hyōgo, Japan
Last position: 2025-07-21 07:37:22 UTC (1d 4h17m ago)
2025-07-21 16:37:22 JST local time at Kadoma, Japan [?]
Altitude: 175 m
Course: 316°
Speed: 7 km/h
Device: Open Source: APRSdroid (app, Android)
Last path: JA4WTZ-9>APDR16 via TCPIP*,qAC,T2SWEDEN
Positions stored: 196185
Other SSIDs: JA4WTZ-7 JA4WTZ-5 JA4WTZ
APRS igate – Statistics for 2025-07:
Stations heard directly: 1 on radio path – show map
Last heard a station directly: 2025-07-21 06:39:38 UTC (1d 5h15m ago)
Position packets heard directly: 100 on radio path
Position packets sent to APRS-IS: 122 – show map
Stations heard directly by JA4WTZ-9
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.
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.
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