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WeatherLink

®

 for APRS 

Addendum 

 

Introduction 

This Streaming Data Logger is designed for use by Ham Radio Operators 
with a TNC modem capable of accepting APRS data packets.  The product 
will allow the user to transmit weather data over Ham Radio without the 
need for a PC. 
 
This product also contains the functionality of the WeatherLink for Vantage 
Pro Serial version.  Please consult the WeatherLink for Vantage Pro™ 
Getting Started Guide and on-line Help files for information on the use of the 
WeatherLink

®

 program (including its hardware requirements and typical 

installation), package contents, and optional accessories for this product. 
 

Hardware Installation and Requirements 

In addition to the requirements for WeatherLink, the streaming data 
capability of this product has the following additional hardware 
requirements. 
 

 

Ham Radio with attached TNC modem capable of accepting APRS 
data packets. 

 

Computer running any version of Windows™ with at least 3 MB free 
of RAM and 512 KB of free hard disk space. 

 
Please refer to the WeatherLink Getting Started Guide, page 7, “serial Port 
Installation” for detailed hardware installation instructions for connecting this 
product to the console and a PC.  To connect this product to a TNC modem, 
connect the cable plug at the end of the 8’ cable to the supplied 25-pin TNC 
Modem adapter.  Plug the adapter into the 25-pin port labeled Computer on 
the TNC modem.  If your TNC modem requires a 9-pin or RJ connection, 
these parts are not available from Davis Instruments. 
 
Note 1:  Davis highly recommends you use the same serial port on your 
computer for both WeatherLink

®

 and APRS

®

, however, you cannot 

communicate to both programs at the same time. 
 
Note 2: While APRS

®

 can communicate up to 9600 baud, WeatherLink

®

 and 

the Vantage Pro console may communicate at any baud rate including the 
default 19,200 baud. 
 
Note 3:  Due to its normal operation, this product will draw more current 
from the Vantage Pro™ Console and Weather Envoy™ than in typical use.  

Summary of Contents for WeatherLink APRS

Page 1: ...ta packets Computer running any version of Windows with at least 3 MB free of RAM and 512 KB of free hard disk space Please refer to the WeatherLink Getting Started Guide page 7 serial Port Installati...

Page 2: ...ity from the Start Menu under the WeatherLink directory Finding the Correct Serial Port The configuration software includes a procedure for locating the serial port to which your streaming data logger...

Page 3: ...ally set the com port and baud rate Consult your TNC modem and Ham Radio documentation to determine how to configure your streaming data logger to communicate APRS data to your Ham Radio Logger Type T...

Page 4: ...your Ham Radio The default value is 9600 This is also the recommended maximum value that you should set Transmission Rate Use this setting to determine how often to send APRS data packets Initially yo...

Page 5: ...5 Default Press this button to restore the data entries to their default values You must still hit OK to save the settings in the data logger...

Page 6: ...p Rainfall in hundredths of an inch in the last 24 hours Upper case P Rainfall in hundredths of an inch since midnight Lower case h Humidity in 00 100 omitted if missing Lower case b Barometric pressu...

Page 7: ...problems such as disconnected sensors or poor reception data may not be reported Hourly and last 24 hour rain will resume reporting totals normally after the data logger streaming function is interru...

Page 8: ...8 Product Number 06540 Davis Instruments Part Number 07395 218 WeatherLink for APRS Rev A Addendum 1 26 05...

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