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[aprssig] APRS next gen

Andrew Rich vk4tec at people.net.au
Thu Sep 20 19:23:57 UTC 2007


I have been playing with a few concepts

1. My current AX25 1200 baud takes about 3 seconds to tx a packet (on
average)

2. The 434 MHz transmitter I made up takes around 25 ms to send a packet.

3. ADS-B takes 112uS to transmitt.

I would like one day to play with PPM (Pulse Positon Modulation) for APRS.

Unfortunately I am no good at FPGA programming.



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Andrew Rich VK4TEC
vk4tec at people.net.au
http://www.tech-software.net



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