[Lowfer] 15db drop in HBG today, 2003-01-07-0600

Tue, 7 Jan 2003 18:14:59 -0500

Dex (and anyone else interested):

Referencing my earlier note about POES, I looked up the time you are
referring to and there WAS a fairly significant POES event at that time. At
the 0526 measurement the level was 12.3 GigaWatts, about average for all the
readings up to that point. Then at the next reading (0604 GMT) The level had
shot up to 59.4 GW, the highest reading so far today. Then it dropped down
to 14.5 GW 15 mins later. I have to believe that the two observations (yours
and POES) are related.

I am currently struggling with Excel to get a decent chart put together for
you. I am about to give up and find some nice, simple, charting software.

73,
Mike
wa1ptc

> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of Dexter McIntyre
> Sent: Tuesday, January 07, 2003 4:35 PM
> To: RSGB LF; lowfer
> Subject: [Lowfer] 15db drop in HBG today, 2003-01-07-0600
>
>
> There was a sudden 15 dB drop in the 75 kHz HBG signal received here in
> NC at just before 0600 UT.  Looks like it was down for about half and
> hour then suddenly came back up to normal.  The noise floor, which
> usually fluctuates with propagation changes, remained constant during
> this time.  Transmitter maintenance maybe?
>
> Plot can be seen at:
>
> http://www.w4dex.com/75khz/hbg07dec02.jpg
>
> Near real time plot can be seen at:
>
> http://www.w4dex.com/75khz/hbg.jpg
>
> Dex
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