SDRSharp_20190102_124605Z_436980000Hz_IQ.wav

I found the reason “It can be decoded at -5 kHz lower tuning below the carrier”
that UZ7HO said. Looking of the reception figure above which received me on
2 Jan 2019, it will be decoded at that moment when the signal began to hear
in Soundmodem. You can see 9k6 spectrum in the FFT of SDR# at the beginning
of the signal. It’s the red arrow part in the figure above.

The red vertical line at the center of the 16 kHz width filter is -5 kHz lower
tuning below the carrier. In other words, it was decoding 9k6 in Soundmodem
when I put the red vertical line at 436.9958 MHz in SDR# FFT in the case of
the figure above. It meant that it was “-5 kHz lower tuning”.

Happy New Year

 
Andy, UZ7HO said you should tune your radio -4800hz below the carrier,
and I, JE9PEL confirmed this IQ.wav file had the highest decoding
possibility at 436.987 MHz below -7 kHz carrier. (1st Jan 2019)
SDRSharp_20181231_123947Z_436970000Hz_IQ.wav
je9pel_31122018_2341.kss