On 2018-07-03 5:16 PM, Wes Stewart wrote:
Hence, I dubbed the mode, "Imaginary" since it hears things that
aren't there.
Not true. It takes advantage of large polynomial encoding that allows
the decoder to "get the message" in spite of missing or damaged bits.
That's no different than *an experienced CW operator* will "copy"
callsigns through noise and QRM by picking up one or two characters
at a time from multiple repeats.
73,
... Joe, W4TV
On 2018-07-03 5:16 PM, Wes Stewart wrote:
In a message to this group back in February I wrote:
Quoting G4WJS: "For FT8 the net effect is that
up to about 5 seconds of a message may be missing yet still
be decoded. The amount missing can be either a truncation or
parts of the message below the decoding threshold. The FT8
message is structured with sync symbols at the start, middle
and end so missing the start or end may have less impact
than missing other parts since mostly sync symbols may be
lost and they contain no message information."
Hence, I dubbed the mode, "Imaginary" since it hears things that aren't
there.
Wes N7WS
On 7/3/2018 12:36 PM, Wayne Burdick wrote:
Overheard yesterday on 40 meter SSB, in reference to FT8: “Given the
level of automation and whatnot, maybe they should call it ‘magic
radio’ instead of ‘ham radio’.”
New contest category?
Wayne
N6KR
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