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Re: Unidentified mystery signal



Hi Pieter,

This is FO-29. The voice is saying:
"This is JAS-2".

I have a very similar recording, if you would like to hear it. My  
recording was made when I was expressly tracking FO-29.

Sil - ZL2CIA

On 13/06/2005, at 9:17 AM, Pieter Ibelings wrote:


> Hi all,
>
> I just came across an almost forgotten recording that was made on  
> August 26, 2003 around 19:50 ET. The recording was made during  
> preparations to copy the Mars Global Surveyor at 55 million Km  
> away. The receive setup consisted of an Icom IC-R8500 phase locked  
> to a GPS standard and an RFSPACE SDR-14 connected to the 10.7 MHz  
> IF output. The antenna was the 85 foot (26 meter) parabolic  
> reflector at the Pisgah Astronomical Research Institute  
> (www.pari.edu).
>
> The mystery signal was heard around 438.293 MHz in FM mode. The  
> recording appears to say "This is DEF2" over and over again. The  
> actual azimuth and elevation of the antenna was not recorded. The  
> antenna was pointed to space. This antenna has a pretty narrow  
> beamwidth and the object appeared to fade in and out so it was  
> probably moving.
>
> I have uploaded a spectrograph of the RF signal out of SpectraVue,  
> It can be found here:
>
> http://www.rfspace.com/mystery/mystery.pdf
>
> There is also an MP3 recording of the signal here:
>
> http://www.rfspace.com/mystery/mystery.mp3
>
> Can anyone identify this signal?
>
> Regards,
>
> Pieter, N4IP
> http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/
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