Latest symbol  D-STAR (D-PRS IGate)
Latest Packet:
Position Packet
Receive Time:
ircDDB Gateway (dstar) by Jonathan, G4KLX
Latest Comment:
440 Voice 446.10000MHz +0.0000MHz
Receive Time:
(Received in latest packet)
Latest Position4:
38.9336666666667, -77.3906666666667
Receive Time:
(Received in latest packet)
Nearby locations:
Oak Hill , United States 0.8 miles
Floris , United States 1.21 miles
Herndon , United States 2.49 miles
Oak Grove , United States 3.55 miles
Latest RNG6:
1 miles
Packet frequency:
917s (Latest 6 packets)
Latest symbol
Search for AC4BT at QRZ.COM!

(Link to

Related stations/objects7:
Symbol  AC4BT B
Nearby stations/objects:
Symbol  AC4BT B 0 yd
Symbol  DW8868 1.27 miles
Symbol  WA1EM-10 1.59 miles
Symbol  EW7355 1.95 miles
Symbol  rbc-rtc 2.48 miles
Symbol  N2LEE-10 2.98 miles
Symbol  KM4HRR-9 3.43 miles
Symbol  DW5776 3.96 miles
Symbol  DW4699 4.12 miles
Symbol  CW3816 4.23 miles
Symbol  FW2982 4.34 miles
Symbol  K3NHT B 4.53 miles
Symbol  K3NHT-B 4.53 miles
Symbol  DW8601 4.97 miles
Symbol  K4HAX-10 5.27 miles

  1. A packet is either recived from the regular APRS-IS servers or from the CWOP servers. Packets received from the APRS-IS servers are sent from ham radio operators, and packets received from the CWOP servers are sent from citizen weather stations.
  2. To get a better understanding of the APRS path I recommend reading the explanation written by wa8lmf.
  3. Used Aprs Device according to the APRS device identification database.
  4. Position accordning to the Google geocoding service, based on the reported latitude and longitude (if we get no valid position from the Google gecoding service we will show the latitude and longitude).
  5. This is the Maidenhead Grid Square Locator, used by ham radio operators to specify a location (using few characters).
  6. RNG is the "pre-calculated omni-directional radio range" of the station (reported by the station itself). If this station has reported several positions or symbols the RNG data will only be used for the position and symbol used in the RNG-packet. It seems like many D-STAR station use the RNG value to specifify D-STAR range.
  7. If station has more than 30 related stations we will only show the 30 closest related stations.
Initial position
Current position

© 2015-2019 Per Qvarforth SM4WJF
All Rights Reserved

In this tab we show all APRS packets of any packet type that has been added to the map.

In this tab we show APRS packets of type position that has been added to the map (note that any station may send a position packet).

In this tab we show all APRS packets of type object or item that has been added to the map.

In this tab we show APRS packets of type weather that has been added to the map (note that any station may send a weather packet, not only weather stations).

In this tab we show APRS packets of type direction finding, telemetry, message, query and status that has been added to the map.

Select date and time to show map data for (enter time for your locale time zone). The regular time length select box can still be used to select how old data that should be shown (relative to selected date and time).

*Note that the heatmap will still based on data from the latest hour (not the selected date and time).

Date and time:


APRS Direct

Current time is:


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