[Lowfer] Early morning VLF

[hvanesce at comcast.net]

Mike,

I checked some of the KiwiSDR user forums and found waterfall settings Slow
= 7 fps and Fast = 23 fps. I'm guessing that fps means frames per second
(updates of the screen per second). Do you know if your waterfall rate was
set on Slow, Medium or Fast for your screenshot yesterday morning?

I'm guessing "Slow", but even in that case the SNRs of your 6 displayed
signals speak well of the KiwiSDR and the noise at your location. 

Do you happen to know if the waterfall rate setting was "Slow"?

Thanks,

Jim AA5BW


-----Original Message-----
From: lowfer-bounces at mailman.qth.net [mailto:lowfer-bounces at mailman.qth.net]
On Behalf Of N8OOU
Sent: Wednesday, January 10, 2018 4:15 PM
To: lowfer at mailman.qth.net
Subject: Re: [Lowfer] Early morning VLF

Jim,

I'm sorry to say I don't know the answers to the spectrum question. The
spectrum display is created by the KiwiSDR radio, and it does not display
those specs like you see in Argo or Spectrum Lab.  I had no luck from a
search of the Kiwisdr User forum. I think it is a question for the
developer.

I will say the waterfall has a rate control (slow, medium, fast), but I
think that is simply the speed at which a new line is painted. I don't
believe any integration is occurring.

I have had the radio for a little over a month, so I am still learning about
it myself.

73   de   N8OOU - Mike Meek

On 01/10/2018 02:03 PM, hvanesce at comcast.net wrote:
> Hello Mike,
> 
> Nice to see 7 MSK signals in your spectrogram. What was the bin width 
> (or noise bandwidth or integration time) for the spectrogram?
> 
> 73,
> 
> Jim AA5BW
> 
> -----Original Message-----
> From: lowfer-bounces at mailman.qth.net 
> [mailto:lowfer-bounces at mailman.qth.net]
> On Behalf Of N8OOU
> Sent: Wednesday, January 10, 2018 2:26 PM
> To: lowferlist
> Subject: [Lowfer] Early morning VLF
> 
> My view of 15-40Khz this morning had the normal trio of NAA,NLK, and NLM.
> Also seen was NWC AUS, NPM HI, and TFK/NRK Iceland. An unknown signal 
> at 31.2.  I had a medium MSK signal at 40.0, but as I was checking the 
> online databases, the signal faded/ended. The database says that 
> should have been JJY Japan.
> 
> The screen capture is here;
> https://www.dropbox.com/s/70jyskhhy4yj5t0/VLF01101805AM.png?dl=0
> 
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