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24238

SUMMARY: Geomagnetic Sudden Impulse

Space Weather Message Code: SUMSUD Serial Number: 207 Issue Time: 2015 May 06 0206 UTC SUMMARY: Geomagnetic Sudden Impulse Observed: 2015 May 06 0143 UTC
SWPC Product Subscription Service
7:11 PM
#24238
 
24237

CANCELLED SUMMARY: Geomagnetic Sudden Impulse

Space Weather Message Code: SUMSUD Serial Number: 206 Issue Time: 2015 May 06 0205 UTC CANCEL SUMMARY: Geomagnetic Sudden Impulse Cancel Serial Number: 205
SWPC Product Subscription Service
7:10 PM
#24237
 
24236

SUMMARY: Geomagnetic Sudden Impulse

Space Weather Message Code: SUMSUD Serial Number: 205 Issue Time: 2015 May 06 0201 UTC SUMMARY: Geomagnetic Sudden Impulse Observed: 2015 May 06 0143 UTC
SWPC Product Subscription Service
7:00 PM
#24236
 
24235

SUMMARY: X-Ray Event exceeded X1 (R3)

Space Weather Message Code: SUMX01 Serial Number: 113 Issue Time: 2015 May 05 2238 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2015 May 05 2205 UTC
SWPC Product Subscription Service
3:37 PM
#24235
 
24234

Re: preparing for my next experiment with vlf, inverse Compton scatt

FWIW, a vacuum-enthusiast newsletter, /the Bell Jar/, might help guide your experiments. I don't know if he is still active since I stopped vacuum work years
Tom Becker
May 4
#24234
 
24233

Re: preparing for my next experiment with vlf, inverse Compton scatt

... No high vacuum is possible in plastic conduits, use glass or silver soldered brass, high vaccum wax and grease. Go to "https://archive.org/" and read this
Claudio Pozzi
May 4
#24233
 
24232

Re: preparing for my next experiment with vlf, inverse Compton scatt

Thanks for the insight I believe this to be good information. I will look into making a degassing chamber and attempt the transfer of the electron gun in a dry
Kevin Burress
May 4
#24232
 
24231

Re: preparing for my next experiment with vlf, inverse Compton scat

There are several technical problems with your proposed setup. First, the vacuum is not nearly good enough for the electron guns to work. Picture tubes run
David Sarraf
May 4
#24231
 
24230

Re: preparing for my next experiment with vlf, inverse Compton scatt

Oh. I was hoping that since the wavelength is so long then looking at it as a sine wave the photons might be able to make it in the tube (there has been
Kevin Burress
May 3
#24230
 
24229

Re: preparing for my next experiment with vlf, inverse Compton scatt

 Hi Keven I admire your enthusiasm however it is alway best to measure twice and cut once or Google twice in this case . Max resolution of light is limited
john heath
May 3
#24229
 
24228

Re: Staircase Event, 2015-04-30

Hi Paul, Thanks! I did not use the lower frequencies since bearings below 15 kHz are not accurate with those small ferrite sticks. Anyway, approx. 65 km from a
pws
May 2
#24228
 
24227

Re: Staircase Event, 2015-04-30

... I calibrated that quadrant using Novosibirsk Alpha F2, true bearing 50.3, measured 50.5; Krasnodar Alpha F1, true bearing 91.3, measured 91.3; JXN 16.4
Paul
May 2
#24227
 
24226

Re: Staircase Event, 2015-04-30

Thanks Peter. All so for your excellent website. I use it sometimes to compare SID events against my modest VLF receive setup. 73 Frits W1FVB / PE1SDF ... --
Frister
May 1
#24226
 
24225

Re: Staircase Event, 2015-04-30

Hi Frits, ... Assuming that signal came from the East: Checking my bearings against RJH99 at 25 kHz I found a deviation of +4 deg. So true bearing is 45 deg.
pws
May 1
#24225
 
24224

Re: Staircase Event, 2015-04-30

Nothing noted here in North America but I did notice that 22.6 kHz was active from about 2015-04-30 0940 through 1157, perhpas the French HWU / Rosnay with a
Graham
Apr 30
#24224
 
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