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Re: LF: VLF in VO

To: "[email protected]" <[email protected]>
Subject: Re: LF: VLF in VO
From: IZ7SLZ <[email protected]>
Date: Tue, 24 Nov 2015 18:40:36 +0100
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Hi Joe,

This are EbNaut results of your carrier well received here in JN80NU (QRB=5400 km):

found *******
list rank 0
reference phase    0    0    0    0
carrier RMS 4.628e+005 noise RMS 1.827e+004
carrier S/N 28.07 dB in 822.4 uHz
carrier Es/N0 0.23 dB
carrier Eb/N0 12.06 dB
info bit period 30.48 seconds
symbol error rate 55/608 = 9.046 %
Es/N0 from symbol errors -0.4 dB
Eb/N0 from symbol errors 11.2 dB
Shannon capacity 1870.5 bits/hour
Shannon efficiency 6.3 %
symbols file C:\Users\Utente\Desktop\EbNaut\11240012-symbols.csv
elapsed 2 seconds

In the attached files, there are also the capture of the SpectrumLab session and the "phase/squared spectrum" plots from showrawsym3a.exe (sw by Markus DF6NM).

Receiver here is still recording also for this night.


73 all,
Domenico / iz7slz




On 11/24/2015 12:22 AM, Domenico IZ7SLZ wrote:
Hi Joe and all Group.

I'm also recording around 137777.00 Hz and i will try to read Joe's EbNaut message tomorrow morning.
Just confirm with an email the starting  time of each  transmissions and if you are using same format of yesterday (no. of characters, symbol duration, code).

Carrier seems  coming OK since 23.00UT


GL and 73, Domenico / iz7slz



On 23 November 2015 at 19:50, <[email protected]> wrote:
Following last night's misadventure, the VLF/LF/MF exciter
seems to be recovering.  On VLF,  CW on 8.277 kHz was heard
at just over 1 km using a crude DC receiver and a miniwhip.
NAA on 24 kHz was loud.

Another attempt will be made to code the EbNaut for LF tonight
and hopefully the bizzare exciter behaviour of last night
was due to a bug from my incompetent programming.

73
Joe VO1NA







Attachment: VO1NA signal on 11_24_2015.jpg
Description: JPEG image

Attachment: Screenshot 2015-11-24 18.09.58.png
Description: PNG image

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