Interesting. Reports for the reception of FW30 from DL0AO are sent to wsprnet a minute and a half before the end of the program
Yes we have magic powers and can look a little bit into the future ;-)
Actually the reason is that all decoders for the 2, 5 and 30 minute modes become active at the same time before the full and half hour, causing a large spike in the processor load. So we decided to shorten the 30 minute wav recording to 1690 seconds and start the jt9.exe decoder earlier. Theoretically this compromise sacrifices around 0.2 dB SNR.
73, Markus