Re: [wsjt-devel] FST4 Decode Bandwidth

2021-02-03 Thread Jim Brown
Thanks. Jim On 2/3/2021 4:54 AM, Steven Franke via wsjt-devel wrote: Next thought. I called CQ for quite a while set for FST4-60. No responses, but a guy near Phoenix (I'm near SF) posted me to PSKReporter, probably unattended. My question is with respect to decoding, if I set up for

Re: [wsjt-devel] FST4 Decode Bandwidth

2021-02-03 Thread Brian G3VGZ
Would 1838 not be a better choice, there's not much JT65 or JT9 these days and FST4 replaces them. Jim Brown wrote: > Makes sense. More questions, which came up first time I tried to use FST4 > on 160M, set up at 1839 kHz dial, 1050 Hz offset (I have a trash intermod > carrier at 1840). If I

Re: [wsjt-devel] FST4 Decode Bandwidth

2021-02-03 Thread Steven Franke via wsjt-devel
> > Next thought. I called CQ for quite a while set for FST4-60. No responses, > but a guy near Phoenix (I'm near SF) posted me to PSKReporter, probably > unattended. My question is with respect to decoding, if I set up for FST4-60, > would I also decode shorter period FST (and vice versa)?

Re: [wsjt-devel] FST4 Decode Bandwidth

2021-02-03 Thread Jim Brown
On 2/2/2021 3:48 PM, Steven Franke via wsjt-devel wrote: Increasing or decreasing the width of the search window will increase/decrease the number of spurious candidates, so a larger search window means longer total decoding time and higher false decode rate. That’s why we advise users to

Re: [wsjt-devel] FST4 Decode Bandwidth

2021-02-02 Thread Steven Franke via wsjt-devel
> On Feb 2, 2021, at 4:56 PM, Jim Brown wrote: > > With FST4, is there an advantage to using narrower decode bandwidth and/or > narrower frequency tolerance? > > Jim K9YC Jim, The GUI controls (FTol for FST4W and FLow/FHigh for FST4) determine the upper and lower limits of the candidate

Re: [wsjt-devel] FST4 Decode Bandwidth

2021-02-02 Thread Jim Brown
On 2/2/2021 3:18 PM, Bill Somerville wrote: if you mean a narrower waterfall/spectrum bandwidth for the former, then that doesn't make much difference. As always it is best to match your receiver's bandwidth. I was thinking of when the single decode is not checked. The frequency tolerance

Re: [wsjt-devel] FST4 Decode Bandwidth

2021-02-02 Thread Bill Somerville
On 02/02/2021 22:56, Jim Brown wrote: With FST4, is there an advantage to using narrower decode bandwidth and/or narrower frequency tolerance? Jim K9YC Hi Jim, if you mean a narrower waterfall/spectrum bandwidth for the former, then that doesn't make much difference. As always it is best