I think you will find that much of the increased QRN
comes from thunderstorm activity, not just in the US
but also the Caribbean and Africa. This is the time
of year for them.
73,
Doug
W6JD
----- Original Message -----
From: "Rod N0RC" <
[hidden email]>
To: <
[hidden email]>; "qrp-l" <
[hidden email]>
Sent: Monday, July 19, 2004 11:28 AM
Subject: [Elecraft] Elevated Ap
> Folks,
>
> A few days ago someone asked [on the Elecraft Reflector] about where we
> were in the solar cycle. I pointed out a chart at:
>
http://sec.noaa.gov/SolarCycle/>
> It didn't strike me until later how the last graph demonstrated an
> increase in the Ap index. I've been poking around various space-WX/solar
> sites trying (without success) to answer some questions:
>
> 1. Is this elevated Ap index typical of a post solar-max cycle?
>
> 2. Will the Ap continue to rise until the solar-min?
>
> 3. Ap & K indices are interrelated (K is a function of A), so why
> hasn't the K index been elevated?
>
> 4. For the last several months I've noticed an increase in the QRN
> level at my QTH. Does this elevated Ap index account for the uptick in
> QRN? (I thought my urban, RF polluted, environment was the cause,
> starting to wonder now)
>
> 5. Is there any literature available that discusses all this in
> layman's terms?
>
> TIA
>
> --
> 73, Rod N0RC
>
>
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