Cross Country Wireless APRS Messenger Lite program
The APRS Messenger Lite program provides a simple way to program an APRS TNC Digi Tracker and act as a simple receive only APRS igate
Serial terminal program to setup the serial or USB versions of the APRS TNC Digi Tracker
Can use any PC Comm port up to Comm 255 including USB serial comm ports
Receive only Igate for VHF APRS
Can be used with the AX25-SCS DSP TNC program
Tested on all versions of Windows from Windows 95 to Windows 7
APRS Messenger Lite version 1.02 can be downloaded as a freeware 1.0 MB zip file here.
This version has the facility to work with the AX25-SCS DSP TNC program so that it can be used without a hardware TNC as a very simple to set up Igate or it can be used with a hardware TNC and two receivers to send two APRS traffic streams to the APRS-IS. For example local APRS and APRS from the International Space Station or HF and VHF APRS This version will run on all versions of Windows and uses minimal CPU resources so will run well on older PC's.
APRS Messenger Lite has also been tested running on Linux on Ubuntu 10.04 running on Wine.
A Windows installer for the AX25-SCS DSP TNC program can be downloaded here. This will allow the installation of AX25-SCS and the drivers needed for Windows PCs.
Although the program is designed to promote the new USB version of our APRS TNC Digi Tracker it will work with other serial TNC's.
The APRS Messenger Lite Help file can be downloaded here.
How to use...Open the program, select the Comm port that the serial TNC or APRS TNC Digi Tracker is connected to.
The data speed is fixed at 4800 bd so incoming data can be read in the "Received Data" box as it arrives.
If nothing appears click on "Disp" to get the TNC to send some data to check the connection.
When it's receiving data OK, type your callsign and SSID in the "My callsign:" box and your APRS-IS passcode (same as the UI-View one) in the "APRS-IS passcode:" box.
Click on the "Connect to server" button and if you are connected to the internet it will start working as a receive only Igate sending local APRS packets to the APRS-IS system for worldwide display.
Contact Chris Moulding, G4HYG via info@no_spam_crosscountrywireless.net for more details or to provide feedback on the program.
Click to join cross_country_wireless
APRS is a registered trademark of Bob Bruninga WB4APR. Click here to view Bob's website.
Cross Country Wireless Ltd is licensed by the trademark holder so that our APRS TNC Digi Tracker can be offered as a commercial product.
APRS is an international network of amateur radio stations providing real-time GPS based vehicle or event position reporting, weather reporting and simple message handling for educational, experimental or emergency use. APRS uses a common radio frequency of 144.800 MHz throughout Europe. Digital repeating (digipeating) is used to extend the range of mobile and low power stations over a wider area. In addition to the radio network internet gateways provide a two-way port to the APRS-IS (APRS Internet System) so that stations local to the gateway can be seen worldwide on APRS viewing programs such as Xastir or UI-View.
APRS over PSK and GMSK is a new mode allowing mobile or fixed station APRS operation on HF from remote areas away from the coverage of the VHF APRS network. Using 10.1497 MHz as a common frequency in Europe and the USA a typical range of 400 to 2000 miles from fixed and mobile stations using modest equipment can be expected. There are several Igates operating in Europe and the USA transferring received packets and messages from 7.0497 and 10.1497 MHz to the APRS-IS.
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