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Re: VLF: EbNaut tonite, 'SMS' via VLF

To: [email protected]
Subject: Re: VLF: EbNaut tonite, 'SMS' via VLF
From: Markus Vester <[email protected]>
Date: Thu, 25 May 2017 21:52:01 -0400
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Unfortunately not, the spectrum has been decimated to 0.1524 Hz bandwidth before the export. I could do sinc interpolation by zero-padding the spectrum but I guess that won't help much.

However I should have mentioned that SpecLab FFT recordings are usually delayed by a four sample latency. In this case it is ~26 seconds behind the file timestamp, which would surely prevent a successful decode if not accounted for in the start offset.

Best 73,

-----Ursprüngliche Mitteilung-----
Von: Paul Nicholson <[email protected]>
An: rsgb_lf_group <[email protected]>
Verschickt: Fr, 26. Mai 2017 2:08
Betreff: Re: VLF: EbNaut tonite, 'SMS' via VLF

> The transmission was recorded at DL0AO using a synthetic
> cardioid antenna.

> here's our wav:
> (129 kB)

This doesn't seem to want to decode. Do you have a version with
higher sample rate?

Paul Nicholson

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