'connecting' to another station since those won't be used for APRS. Forget about all of the packet features that have to do with Packet transmission, with all packets intended to be received by all stations Radio into 'Packet Mode' by pressing the FUNC key, followed by the SQL

Simplex, the standard APRS frequency in the US. Set the DR-135 radio to operate on 144.390 MHz Operate stand-alone after it is configured. You'll need a computer to set the radio up but the radio/TNC can Our objective here is to have the radioīurp out APRS-compatible strings that make your station visible to neighboringĪPRS stations. The TNC should be set to match the starting TNC settings (click hereįirst, we'll set up the TNC and radio for basicĪPRS operation from a fixed location. Roughly how it works but you won't need detailed understanding of the commands. You'll need to read the TNC manual to understand To verify that your TNC/radio is talking to the computer,Ĭycle power on the radio and you should see a power-up reset message that looks 'HyperTerminal' (under Programs, Accessories, Communications). I used the standard MS Windows terminal emulation program In other words, go elsewhere to find out how to troubleshoot a serialĬonnection. Here as serial connections are notoriously messy but relatively well-understood. A serial cable with 9-pin connectors on both ends and a terminalĮmulation program are normally required. then the radio configuration is handled for youįirst, you need to get the TNC inside the DR-135TP talking to See the introductoryĪrticle at for more information on APRS.Īlso, this article is mainly concerned with how to configure the radio and TNCįor basic operation using terminal emulator commands. You may learn something about APRS in this article but it is not intended My main use of this radio and the focus for this article isĪPRS. The APRS specification is available from the TAPR web site. APRS® is a registered trademark of Bob Brunina WB4APR, which stands for Automatic Position Reporting System. Instruction manual can be found on the Alinco web site. Thin, so perhaps this will help someone else getting started. The documentation that comes with the radio is a bit Getting my Alinco DR-135TP (with optional internal EJ-41U TNC) to function onĪPRS® and packet radio. This document captures some of the things that I learned while

I don't know what, if any, changes have been Here's what I learned about getting this toĪpplies to the original Alinco DR-135TP.a newer version has been recently Using an Alinco DR-135TP 2M transceiver on APRS

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