ProPINN: Demystifying Propagation Failures in Physics Informed Neural Networks
Yuezhou Ma, Haixu Wu, Hang Zhou, Huikun Weng, Jianmin Wang, Mingsheng Long
Action editor: Lei Feng

ProPINN: Demystifying Propagation Failures in Physics Informed Neural Networks
Yuezhou Ma, Haixu Wu, Hang Zhou, Huikun Weng, Jianmin Wang, Mingsheng Long
Action editor: Lei Feng
RI1FJL, Franz Josef Land confirmed via LotW.
DXCC #303
#radio #amateurradio #dxing #dx #propagation #DXCC
📻 Band Conditions — SFI 101 · K-index 0 · Sunspots 82 Daytime: 80-40m Good | 30-20m Good | 17-15m Fair | 12-10m Poor Data: NOAA SWPC / hamqsl.com #hamradio #cbradio #propagation
🌞📡 NOAA’s 21 Sep forecast expects Kp no higher than 2 through 23 Sep, with no G1+ storms, S1+ radiation storms or R1+ radio blackouts expected. Solar flux: 105, 105, 100. Check the bands! gars.org.gg #HamRadio #Propagation #SpaceWeather
📻 Band Conditions — SFI 97 · K-index 0 · Sunspots 36 Daytime: 80-40m Good | 30-20m Good | 17-15m Fair | 12-10m Poor Data: NOAA SWPC / hamqsl.com #hamradio #cbradio #propagation
☀️📻 NOAA/SWPC’s 20 Sep 00:30 UTC forecast expects Kp no higher than 2 through 22 Sep, with no G1 storms expected. Daily risk is 1% for both R1–R2 radio blackouts and S1+ radiation storms. gars.org.gg #HamRadio #Propagation #SpaceWeather
📻 Band Conditions — SFI 96 · K-index 1 · Sunspots 0 Daytime: 80-40m Fair | 30-20m Good | 17-15m Fair | 12-10m Poor Data: NOAA SWPC / hamqsl.com #hamradio #cbradio #propagation
In the Blue Mountains of New South Wales, an endangered shrub is struggling with fertility. A team of scientists hopes the plant equivalent of IVF can help. #plant #propagation #botany #plants #conservation #ecology #cultivation #horticulture #industry #botanical #gardens
📻 Band Conditions — SFI 97 · K-index 1 · Sunspots 0 Daytime: 80-40m Fair | 30-20m Good | 17-15m Fair | 12-10m Poor Data: NOAA SWPC / hamqsl.com #hamradio #cbradio #propagation
☀️📻 UPDATE: NOAA’s 18 Sep 12:30 UTC forecast expects Kp no higher than 3 through 20 Sep, with mostly quiet conditions on 19 Sep and quiet conditions on 20 Sep. It gives a 1% daily chance of R1–R2 radio blackouts and S1+ radiation storms. gars.org.gg #HamRadio #Propagation
📻 Band Conditions — SFI 100 · K-index 1 · Sunspots 11 Daytime: 80-40m Fair | 30-20m Good | 17-15m Fair | 12-10m Poor Data: NOAA SWPC / hamqsl.com #hamradio #cbradio #propagation
🌞📻 NOAA/SWPC issued 17 Sep 12:30 UTC: G1 (Minor) geomagnetic storm conditions are possible 21:00–00:00 UTC today. Unsettled to active conditions are expected 18–19 Sep as effects wane. gars.org.gg #HamRadio #Propagation #SpaceWeather
Today is the day, it's Thursday...
#hamradio #swl #amateurrardio #dxing #dx #propagation #APRS #APRSTHURSDAY #FTM400
📻 Band Conditions — SFI 107 · K-index 1 · Sunspots 23 Daytime: 80-40m Fair | 30-20m Good | 17-15m Fair | 12-10m Poor Data: NOAA SWPC / hamqsl.com #hamradio #cbradio #propagation
☀️📻 NOAA’s 16 Sep 1230 UTC forecast expects active to G1 geomagnetic storm levels on 16–17 Sep from coronal-hole and CME influences, easing to unsettled–active on 18 Sep. No R1+ radio blackouts are expected. gars.org.gg #HamRadio #Propagation
📻 Band Conditions — SFI 104 · K-index 0 · Sunspots 46 Daytime: 80-40m Good | 30-20m Good | 17-15m Fair | 12-10m Poor Data: NOAA SWPC / hamqsl.com #hamradio #cbradio #propagation
📡 Propagation HF · 14–20 septembre 2026
🟠 15–17 septembre perturbés, surtout le 16.
📻 20 m à tester, 40 m en repli.
▶️ lesf4.github.io/propagation/
#Radioamateur #HamRadio #Propagation #HF #POTA #SOTA
13,880.6kHz USB WEFAX (Facsimile Tx for shipping).
DDK6 HAMBURG/PINNEBERG, GERMANY 10kW (1,300km)
36HR forecast surface pressure.
#radio #amateurradio #dxing #dx #propagation #DXCC #wefax
📻 Band Conditions — SFI 114 · K-index 2 · Sunspots 52 Daytime: 80-40m Fair | 30-20m Good | 17-15m Fair | 12-10m Poor Data: NOAA SWPC / hamqsl.com #hamradio #cbradio #propagation
☀️📻 PROPAGATION UPDATE: NOAA/SWPC’s 14 Sep forecast now expects isolated G1 (Minor) storming on 16 Sep, with Kp up to 4.67 late UTC. R1–R2 blackout chance is 10% daily through 16 Sep. gars.org.gg #HamRadio #Propagation