D-RATS Dan Smith - KK7DS SeaPac 2009. Outline What is D-STAR? What is D-RATS? Goal Messaging Files and Images Positional Awareness Network Connectivity.

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Presentation transcript:

D-RATS Dan Smith - KK7DS SeaPac 2009

Outline What is D-STAR? What is D-RATS? Goal Messaging Files and Images Positional Awareness Network Connectivity Implementation

What is D-STAR? Purely digital mode Simultaneous voice and data High-speed (DD) and Low-speed (DV)‏ Repeater and gateway infrastructure All DV radios can do ~950bps data No modem required Just a serial port (no framing, ECC, etc)‏ Not 8-bit safe

What is D-RATS (Goal)‏ All-in-one tool for D-STAR data ops Provide real uses for the slow data channel Oriented at EmComm No dependence on infrastructure Originally targeted for simplex All network interaction at endpoints

What is D-RATS? (Changes in 0.3)‏ Improved User Interface Provide more BBS-like behavior ( still at endpoints! )‏ -client-like messaging interface FTP-client-like file transfer interface Better event capture and logging transport of forms (interface with WinLink)‏ Mapping improvements, dynamic data, speed Multiple data ports (multiple radios, networks)‏

What is D-RATS? (Messaging)‏ Free-form multicast chat messages Checksum-protected No ACK/NAK from remote stations (yet)‏ Structured messages Use XML to convey structure and content XSL at the endpoints for presentation gateway Crafted headers for reply and forward Ad-hoc setups at the end points (no infrastructure)‏

What is D-RATS? (Files and Images)‏ Arbitrary file transfers with sliding window, compression, and resume “File server” for remote retrieval Integrated resize/resample of image files

What is D-RATS? (Positional Awareness)‏ Captures and sends ICOM GPS strings Distance and direction calculation Integrated map display External GPS to multiplex the port Moving stations updated in real-time Free maps!

What if I don't have D-STAR?

Ratflector Connect to other D-RATS users via Internet Easy and clean for testing Data-only reflector Configure D-RATS serial port for:  net:ref.d-rats.com:9000 Anyone can set one up for private or public use

TNC – The gateway drug to D-STAR data Use a KISS-mode TNC with D-RATS Gives you point-to-point data transfer No AX.25  Simpler to setup  Lower overhead Interface with D-STAR users through stations running both formats

Implementation Written in Python/GTK Runs on Linux, Mac, and Windows Full session stack protocol OpenStreetMap.org for free maps

References D-RATS Website D-RATS Mailing List