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. regards, --Andy On Thu, 6 Dec 2018 at 12:20, C. Bassa <cgbsat_at_gmail.com> wrote: > Hi Andy, > > On Thu, Dec 6, 2018 at 1:07 PM AjK <kirkham.andy_at_gmail.com> 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 > _______________________________________________ Seesat-l mailing list http://mailman.satobs.org/mailman/listinfo/seesat-lReceived on Thu Dec 06 2018 - 06:23:41 UTC
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