WSJT-X/doc/user_guide/en/odds_and_ends.adoc
Joe Taylor 341f636232 More editing of User Guide.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7335 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2016-11-22 20:33:50 +00:00

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=== Decoded Lines
Displayed information accompanying decoded messages generally includes UTC,
signal-to-noise ratio in dB, time offset DT in seconds, and
audio frequency in Hz. Some modes include additional information such
as frequency offset from nominal (DF), frequency drift (Drift or F1),
or distance (km or mi).
There may also be some cryptic characters with special meanings
summarized in the following Table:
[[DECODED_LINES_TABLE]]
.Notations used on decoded text lines
[width="50%",cols="h,3*^",frame=topbot,options="header"]
|===========================================
|Mode |Mode character|Sync character|End of line information
|JT4 | $ | *, # | f, fN, dNC
|JT9 | @ | |
|JT65 | # | |
|JT65 VHF| # | *, # | f, fN, dNC
|QRA64 | : | * | R
|ISCAT | | * | M N C T
|MSK144 | & | | N
|===========================================
Sync character::
`*` - Normal sync +
`#` - Alternate sync
End of line information::
`C` - Confidence indicator [ISCAT and Deep Search; (0-9,*)] +
`d` - Deep Search algorithm +
`f` - Franke-Taylor or Fano algorithm +
`M` - Message length (characters) +
`N` - Number of Rx intervals or frames averaged +
`R` - Amount of _a priori_ information used by decoder +
`T` - Length of analyzed region (s)
=== Reference Spectrum
WSJT-X provides a tool that can be used to determine the detailed
shape of your receiver's passband. Disconnect your antenna or tune to
a quiet frequency with no signals. With WSJT-X running in one of the
slow modes, select *Measure reference spectrum* from the *File* menu.
Wait for about a minute and then hit the *Stop* button. A file named
`refspec.dat` should appear in your log directory.
[ ... more to come ...]