Davis WeatherLink - APRS/CWOP Data Fields (Version
5.2 or later)
The the data fields used for APRS reporting are described below.
Sample APRS Output
CW0538>APRS,TCPXX*:@192243z3738.16N/12207.50W_274/010g...t065L776P000h61b10084.DsVP
APRS Data Fields
| Field# | Description | Text From OutputSample | Data Values |
| 1. | Call Sign or Citizen Weather Observers Program number (i.e. "CW0538"). Identifies the station. Entered in the APRS Setup dialog. It should be exactly 6 characters long. | CW0538 | |
| 2. | Message transmission path | >APRS,TCPXX*: | |
| 3. | Zulu, GMT or UTS time. Includes the day of the month, hour, and minutes. Uses the timezone and daylight savings settings of your windows operating system. | @192243z | 19th day of the month, 22:43 GMT |
| 4.a | Latitude. It’s entered in the Set Latitude & Longitude dialog box. | 3738.16N | 37° 38.16' N |
| 4.b | Longitude. It’s entered in the Set Latitude & Longitude dialog box. | /12207.50W | 122° 7.5' W |
| 5. | Current Wind direction (degrees). 0° = North | _274 | 274° |
| 6. | Wind speed (MPH). (The Vantage Pro sends 10 minute average wind speed) | /010 | 10 mph |
| 7. | Wind Gust (not reported by Vantage Pro) | g... | Not reported |
| 8. | Current Temperature (whole degrees F, last reported values) | t065 | 65° F |
| 9. | Luminescence (Solar Radiation). Requires solar radiation sensor. Data omitted if no solar radition sensor is present in the station.A capital L, "L", is used to report values between 0 and 999 w/m2. A lower case L, "l", used to report values from 1000 to 1999 w/m2. | L776 | 776 w/m2 |
| 10. | Rain since midnight (in 0.01 inch) | P000 | 0.0 inches |
| 11. | Current humidity (in percent, 00 = 100%) | H61 | 61% |
| 12. | Current Barometer (in 0.1 mb or 0.1 hPa) measured every 15 minutes | B10084 | 1008.4 mb |
| 13. | Weather station type ID ("DsVP" for Davis Vantage Pro) | DsVP | Readings taken by a Vantage Pro weather station |
The following APRS fields are not supported by the Vantage Pro:
· 5 minute wind gust.
· 1-hour rain.
· 24-hour rain.
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