Ham Radio Messaging using Arduino
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Uploaded by kc8grq on Aug 28, 2011
This is a very rough stage of what I would like to do with Ham Radio text messaging over the radio.
The plans are to use the AX.25 protocol at 1200 baud, similar to APRS.
http://Mark-Rodgers.com for my blog and more info.
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How is this project going? Having any success?
I thought the signaling system used the old Bell 101 on the physical layer. This consists of two tones played separately, never played polyphonically.
If you need polyphonic tones, output each tone on a PWN pin separately and combine them externally. For tones that require amplitude modulation, you have to generate them in software (I have code to do this, if you need it).
MadManMarkAu 3 weeks ago
Well done, I look forward to more videos.
OriginalModifier 1 month ago