[aprssig] Packet Radio Tone Generation
vk4tec at tech-software.net
Sat Dec 18 05:12:04 CST 2004
Working the numbers for 1200 Baud packet generation using a PIC.
Does this look right ?
1200 Baud = 1200 possible symbol changes per second
1 Symbol change possible every 833 uS
Tones used are 1200 Hz and 2200 Hz
How then does 1200 and 2200 fit into the scheme ?
Does one cycle of 1200 Hz equate to enought for one symbol ?
2200 does not seem to fit cleanily assuing zero crossing
Cheers Andy VK4TEC
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