Regarding Observation 1914 I tried decoding with Direwold but only a single packet was decoded:
[0.3] <0xc0><0x80><0xb7>.<0xc0>STRaND1 MODEM BEACON - Help me OBC Kenobi<0x0d><0x0a><0xc0>
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dest `@[`) 10 c/r=0 res=2 last=0
source )0'" 6 c/r=0 res=2 last=1
000: c0 80 b7 2e c0 53 54 52 61 4e 44 31 20 4d 4f 44 .....STRaND1 MOD
010: 45 4d 20 42 45 41 43 4f 4e 20 2d 20 48 65 6c 70 EM BEACON - Help
020: 20 6d 65 20 4f 42 43 20 4b 65 6e 6f 62 69 0d 0a me OBC Kenobi..
030: c0 00 ..
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The Waterfall seems to contain more information though… Any ideas?