RE: VLF: First VLF detection DL > EA

[<hvanesce@comcast.net>]

Based on Marcus' request for all-day carrier at 17470.1000 Hz and Paul's report 
of -38.55 dB in 1Hz in Forest, Virginia, I'll keep a SpecLab window open at 
17470.1000. 

I installed a receiver with GPSDO at a new lower-noise* permanent location in 
Arlington, VA two days ago but it did not occur to me that the new lower noise 
level might accommodate detection of Stefan's 17470.1000 Hz signal.  
     * (15 dB lower noise so far, additional reduction likely this week)

-38.55 dB in 1Hz would seem to suggest 6 dB in 8 hours using EbNaut, but I 
haven't tried EbNaut and wonder (if the new lower-noise Arlington location has 
noise and path loss similar to that of Forest, VA) how much lower than 6 dB the 
SNR would be with an all-day carrier (instead of with EbNaut).

Does it seem worthwhile to perform 8-hour integrations for (and save raw data 
for) Stefan's 17470.1000 Hz carrier signals in the new Arlington, VA location? 

Any other suggestions for near-term detection of Stefan's 17470.1000 Hz carrier 
signals in Arlington, VA? If EbNaut is strongly suggested, is Windows OS 
incompatible? Long learning curve for an EbNaut newcomer?    

73,

Jim AA5BW


-----Original Message-----
From: owner-rsgb_lf_group@blacksheep.org 
[mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Paul Nicholson
Sent: Wednesday, December 6, 2017 4:49 PM
To: rsgb_lf_group@blacksheep.org
Subject: Re: VLF: First VLF detection DL > EA


 > How far could this signal travel! We are missing  > RX stations everywhere!

Forest, Virginia, is reporting Eb/N0 = -7.5dB on the 4 char transmission.  
That's -38.55 dB in 1Hz.

Distance is 6817 km.

Recommend starting a bit later, say 00:00 or 01:00, and maybe we do some 
stacking too?

--
Paul Nicholson
--