Birdsong Recording on the VLF Antenna Element

[Jonathan]

On May 17th at 6:37PM local time, a bird that was on the VLF Active Antenna was chirping birdsong and the mechanical vibrations from the bird’s body transferred to the antenna and was recorded as a chirping sound in the VLF spectrum data. Here is the spectrogram showing four distinct chirps:

Attached is the audio recording. Can anyone identify the bird?

Jonathan

KC3EEY

[Don Westacott]

Jonathan

 

I would propose the bird is the Northern Cardinal.

 

Don Westacott VE6HQ

 

From: ham...@googlegroups.com <ham...@googlegroups.com> On Behalf Of Jonathan
Sent: Thursday, May 18, 2023 2:19 PM
To: Unknown <ham...@googlegroups.com>; TangerineSDR Listserv <tanger...@lists.tapr.org>
Subject: [HamSCI] Birdsong Recording on the VLF Antenna Element

 

On May 17th at 6:37PM local time, a bird that was on the VLF Active Antenna was chirping birdsong and the mechanical vibrations from the bird’s body transferred to the antenna and was recorded as a chirping sound in the VLF spectrum data. Here is the spectrogram showing four distinct chirps:

 

Attached is the audio recording. Can anyone identify the bird?

 

Jonathan

KC3EEY

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[Tom McElroy]

Hmm, 

I did a FFT* of the waveform and concluded that is was this:

https://www.youtube.com/channel/UC0syBXIuG7k5s_p6mWnrUPw

*Fethered Friend Transform. 

73

Tom - W4SDR

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