[TangerineSDR] TangerineSDR Digest, Vol 36, Issue 1

[Robert VA3ROM]

Forgot to add that my Flex-1500 + GPSDO monitoring the WWV 10 MHz carrier
showed a sharp +3 Hz frequency shift spike at the time the M2.0 solar X-ray
flare hit. I suspect that the SID event went farther up the EM spectrum. I
use a slightly modified version of Steve Cerwin, WA5FRF's Spectrum
Laboratory script for this purpose.

73,
Robert, VA3ROM


On Sat, Mar 5, 2022 at 12:20 AM <tangerinesdr-request at lists.tapr.org> wrote:

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>    1. VLF SID Event on Three VLF Transmitters! (Jonathan)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sat, 5 Mar 2022 00:19:39 -0500
> From: Jonathan <emuman100 at gmail.com>
> To: TangerineSDR Listserv <tangerinesdr at lists.tapr.org>, Unknown
>         <hamsci at googlegroups.com>
> Subject: [TangerineSDR] VLF SID Event on Three VLF Transmitters!
> Message-ID:
>         <
> CAOY0kB0dFYzAr_vJ0tLBT5ej1OmG_YZ86y79ATz_OLrBhOfq3A at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> A VLF SID event was observed on *THREE* VLF transmitters (NAA at 24 kHz,
> NLK at 24.8 kHz, and NAU at 40.8 kHz) at just after 17:30 UT on 3/2/2022 at
> the Springbrook Township, PA VLF observatory site! Here are relative
> amplitude and phase plots. You can see the sudden enhancement of
> propagation and change in phase below of NAA:
>
>  NLK:
> NAU:
> The affect on NAU is smaller, but observed VLF SIDs are path dependent.
> Phase data from NAU is erroneous.
>
> Here are the plots with a 75 minute time span showing the a better view of
> the sudden propagation enhancement.
>
> NAA:
> NLK:
> NAU:
> Again, phase data for NAU is erroneous.
>
> What is so exciting is that this SID was observed on three VLF
> transmitters! Normally, you don?t see that very often!
>
> Jonathan
> KC3EEY
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> End of TangerineSDR Digest, Vol 36, Issue 1
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