[ADXA] Fwd: [RttyDigital] SFI=343 - Wow

[Earl]

  FYI !! Copied from another reflector.  From Frank W3LPL

*From:*rttydigital at groups.io [mailto:rttydigital at groups.io] *On Behalf 
Of *Frank Donovan
*Sent:* Friday, February 17, 2023 5:36 PM
*To:* rttydigital
*Subject:* Re: [RttyDigital] SFI=343 - Wow

The SFI measurement always takes place at exactly the specified time.

Occasionally the SFI is wildly high (and invalid) when the measurement 
takes place during a solar flare

*2023-02-17*

	

18:00:00

	

2459993.239

	

2267.739

	

165.0

	

161.1

	

145.0

*2023-02-17*

	

20:00:00

	

2459993.322

	

2267.742

	

343.1

	

335.0

	

301.5

*2023-02-17*

	

22:00:00

	

2459993.406

	

2267.745

	

182.0

	

177.7

	

160.0

The 1800Z SFI was 165

The 2000Z SFI was 343 (invalid)

The 2200Z SFI was 182

https://www.spaceweather.gc.ca/forecast-prevision/solar-solaire/solarflux/sx-4-en.php

73

Frank

W3LPL

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