w4kek/WSJT-X
1
0
Fork 0
mirror of https://github.com/saitohirga/WSJT-X.git synced 2026-07-28 13:04:25 -04:00
Code Issues Packages Projects Releases Wiki Activity

Editing of new FST4/FST4W text in the User Guide.

Browse Source
This commit is contained in:
Joe Taylor
2020-09-24 10:42:39 -04:00
parent 4a327c2c42
commit 3799ddc3f7
5 changed files with 75 additions and 74 deletions
Download Patch File Download Diff File Expand all files Collapse all files
doc/user_guide/en/tutorial-example5.adoc
+18 -19
View File
@@ -1,24 +1,23 @@
FST4 is is designed for making 2-way QSOs on the LF and MF bands. Do
not confuse it with FT4, which has a very different purpose! Most
on-screen controls, auto-sequencing, and other features behave in FST4
as in other modes. However, operating conventions on the 2200 and 630
m bands make it desirable to have additional user controls that set
the active frequency range for decoding. Spin boxes labeled *F Low*
and *F High* set lower and upper frequency limits for the FST4
decoder.
image::FST4_center.png[align="center"]
Decoding limits are marked by dark green angle-bracket symbols *< >* on
the Wide Graph frequency scale:
Do not confuse FST4 with FT4, which has a very different purpose!
FST4 is is designed for making 2-way QSOs on the LF and MF bands.
Operation with FST4 is similar to that with other _WSJT-X_ modes: most
on-screen controls, auto-sequencing, and other features behave in
familiar ways. However, operating conventions on the 2200 and 630 m
bands have made some additional user controls desirable. Spin boxes
labeled *F Low* and *F High* set lower and upper frequency limits used
by the FST4 decoder, and these limits are marked by dark green
angle-bracket symbols *< >* on the Wide Graph frequency scale:
image::FST4_Decoding_Limits.png[align="center"]
In general the specified range should be no larger than you need, since
detected transmissions in modes other than the selected FST4 sequence
length will be undecodable and will slow down the decoding process.
{empty} +
If *Single decode* on the the *File | Settings | General* tab is
checked, the decoding range is further limited to the *F Tol* range
around *Rx Freq*.
image::FST4_center.png[align="center"]
It's best to keep the decoding range fairly small, since QRM and
transmissions in other modes or sequence lengths will slow down the
decoding process (and of course will be undecodable). By checking
*Single decode* on the the *File | Settings | General* tab, you can
further limit the decoding range to the setting of *F Tol* on
either side of *Rx Freq*.