Re: Off Topic: Request for UNID identification

From: AjK via Seesat-l <>
Date: Thu, 6 Dec 2018 12:22:44 +0000
HI Cees

OK, that makes sense. I need to learn more about this. I will widen my
bandwidth and retry, I will let you know how I get on :)

Thanks for your feedback and advice.


On Thu, 6 Dec 2018 at 12:20, C. Bassa <> wrote:

> Hi Andy,
> On Thu, Dec 6, 2018 at 1:07 PM AjK <> wrote:
> > If this is the case this is the first satellite detection I could
> confirm which seems strange since I have previously tried, and failed, with
> the ISS
> My guess would be that this is because you focus on a narrow band
> around the GRAVES frequency. This means that satellites will only be
> visible at that frequency if the velocity between the transmitter and
> the satellite as well as the velocity between the satellite and your
> receiver, is very close zero. This would normally occur near
> culmination (closest approach). For the ISS orbit at 51.6 deg
> inclination, this usually occurs outside of the GRAVES radar beam.
> Since Tiangong-2 is at lower inclination, you are more likely to see
> that around 143.050MHz. My suggestion would be to look at a larger
> bandwidth, or focus on frequencies about 50kHz above or below the
> GRAVES frequency.
> Regards,
>     Cees
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Received on Thu Dec 06 2018 - 06:23:41 UTC

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