On 05/29/2014 05:37 AM, Andreas Weller
wrote:
We long for the perfect HF channel that can actually carry this without errors :-)Very simple example: ./c2enc 1400 hts1a.raw - |openssl enc -rc4 -k Test|openssl enc -rc4 -d -k Test| ./c2dec 1400 - - |play -t raw -r 8000 -s -2 - I think you'd need a lot of FEC, and an encryption protocol that could recover from stream errors (unlike OpenSSL), perhaps one that was independent of adjacent frames. So, at least a 5X increase in bandwidth, and corresponding decrease in effective power and channel fade budget. I am not sure it would work over an SSB radio. Thanks Bruce |
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