Band change

w9mdb
Users

Posts: 192

Band change Jun 14, 2022 16:05:10 GMT

Quote

Post by w9mdb on Jun 14, 2022 16:05:10 GMT

Doing a band change towards the end of a decode cycle (top of the minute)
The band does not get displayed for the last decode

This code will never execute the "> 14" clause as the decode line is printing out at 13 seconds
So perhaps this should be changed to > 12?

if (m_jtdxtime->currentMSecsSinceEpoch2() / 1000 - m_secBandChanged > 50

|| (m_jtdxtime->currentMSecsSinceEpoch2() / 1000 - m_secBandChanged > 14 && m_mode == "FT8")

|| (m_jtdxtime->currentMSecsSinceEpoch2() / 1000 - m_secBandChanged > 6 && m_mode == "FT4"))

{

band = ' ' + m_config.bands ()->find (m_freqNominal) + ' ';

}

Arvo ES1JA Administrator Posts: 364	Band change Jun 14, 2022 16:37:37 GMT Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Arvo ES1JA on Jun 14, 2022 16:37:37 GMT In general after doing band change in middle of period next decode may have decodes from both bands, in other words is not clear to which band decodes belongs, so it is safe not showing band in separation line.

w9mdb
Users

Posts: 192

Band change Jun 14, 2022 16:46:49 GMT

Quote

Post by w9mdb on Jun 14, 2022 16:46:49 GMT

13 seconds since epoch and band change is not in the middle of the decode period at all.
You definitely will not be decoding the old band.

Let's say
Epoch = 0
Band change a bit after 0
m_secBandChanged = 13 (end of decode period)
Matter of fact that could be > 12 or > 11 and you would still be decoding the new band....not enough info on the old one.
So if you change band in the first few seconds of the decode period the new band wins.

Another related problem...the pskreporter call is using the "current" freq when the call is made instead of the freq at the start of the decode period which could be 1-3 seconds or so after the deocode starts.
I think the freq at the start of decode should be saved and then used for PSKReporter. We are getting some false band reporting now when doing band changes related to all of this timing.

Band change

Post by w9mdb on Jun 14, 2022 16:05:10 GMT

Post by Arvo ES1JA on Jun 14, 2022 16:37:37 GMT

Post by w9mdb on Jun 14, 2022 16:46:49 GMT