Latest symbol  Antenna
Latest Packet:
Position Packet
Receive Time:
Latest Comment:
KP4BW 446.470 MHz PL 141.3 [AllStar Link 41073] Chicago, IL
Receive Time:
(Received in latest packet)
Latest Position4:
41.7425, -88.1815
Receive Time:
(Received in latest packet)
Nearby locations:
Naperville , United States 3.48 miles
Warrenville , United States 5.22 miles
Woodridge , United States 6.77 miles
Plainfield , United States 8.07 miles
Latest PHG6:
Power 25 W, Height 39 ft, Gain 9 dB omni
(Calculated range: 15.88 miles)
Latest symbol
Search for KP4BW at QRZ.COM!

(Link to

Related stations/objects7:
Nearby stations/objects:
Symbol  KP4BW-12 0 yd
Symbol  KC9YFH B 1.55 miles
Symbol  KC9YFH-B 1.55 miles
Symbol  FW3026 1.89 miles
Symbol  EW2253 2.2 miles
Symbol  W9WKM 2.29 miles
Symbol  NE9MA-10 2.64 miles
Symbol  EW9853 3.29 miles
Symbol  EW4199 3.53 miles
Symbol  W9KJ-10 3.68 miles
Symbol  CW7164 4.4 miles
Symbol  KC9BST-1 4.69 miles
Symbol  DW4063 5.48 miles
Symbol  DW1973 5.78 miles
Symbol  DW9987 5.91 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. PHG stands for Power-Height-Gain (and directivity). The height is not the height above sea-level, it is the height above average terrain (HAAT = Height Above Average Terrain). PHG is used to calculate the relative RF range of a station. If this station has reported several positions or symbols the PHG data will only be used for the position and symbol used in the PHG-packet.
  7. If station has more than 30 related stations we will only show the 30 closest related stations.
Initial position
Current position