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24 lines
1.0 KiB
Plaintext
24 lines
1.0 KiB
Plaintext
Do not confuse FST4 with FT4, which has a very different purpose!
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FST4 is is designed for making 2-way QSOs on the LF and MF bands.
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Operation with FST4 is similar to that with other _WSJT-X_ modes: most
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on-screen controls, auto-sequencing, and other features behave in
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familiar ways. However, operating conventions on the 2200 and 630 m
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bands have made some additional user controls desirable. Spin boxes
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labeled *F Low* and *F High* set lower and upper frequency limits used
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by the FST4 decoder, and these limits are marked by dark green
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angle-bracket symbols *< >* on the Wide Graph frequency scale:
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image::FST4_Decoding_Limits.png[align="center"]
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{empty} +
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image::FST4_center.png[align="center"]
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It's best to keep the decoding range fairly small, since QRM and
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transmissions in other modes or sequence lengths will slow down the
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decoding process (and of course will be undecodable). By checking
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*Single decode* on the the *File | Settings | General* tab, you can
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further limit the decoding range to the setting of *F Tol* on
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either side of *Rx Freq*.
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