[amsat-bb] Re: Fw: Response to my request of information about EduSat fromGAUSS team in Rome: Re: [CubeSat] Edusat operative or failure
m5aka at yahoo.co.uk
Wed Aug 31 13:38:32 PDT 2011
The Gauss website at
says regarding frequencies:
"The communication system uses frequencies in the 145MHz band to communicate from ground to satellite (uplink) and frequencies in the 435MHz band for communications from the satellite to earth (downlink). It also provides the S-band."
As I see it there are two issues.
(1) The failure to apply for IARU frequencies. Gauss of course are not alone in this, for example none of the Russian Federation's satellites have gone through IARU coordination. Clearly it is desirable that all Amateur Radio satellite groups go through coordination to minimize interference and enable us to make maximum use of our limited allocations.
(2) The use of 145 MHz for command uplink and 435 MHz for downlinks by satellites that are nothing to do with Amateur Radio and are using the Amateur Satellite Service spectrum for their own private use.
An earlier posting on this list indicated that the 435.750 MHz downlink (and presumably the 145 MHz uplink ?) would only be used when the satellite was in range of Italy.
A subsequent posting indicated that EDUSAT would also be commanded from the United States. I do not have a detailed knowledge of USA Amateur license regulations so I do not know if US Amateurs are permitted to control private non-Amateur spacecraft using Amateur Satellite Service frequencies.
73 Trevor M5AKA
--- On Wed, 31/8/11, i8cvs <domenico.i8cvs at tin.it> wrote:
> Edusat is a "Non amateur satellite" ? ......OK ,but it has
> received an
> experimental license on 435.750 MHz for communicating at no
> into the "Satellite Amateur Frequencies" without
> coordination from
> IARU..OK ?
> It is very strange that Edusat has received an experimental
> for communications into the Satellite Amateur Band without
> frequency coordination from IARU
> It is also very strange that the GAUSS group do not
> officially published
> the operating frequencies of Edusat stating that those
> published via internet are wrong frequencies.
> It seems that there is no coordination between our
> Autority in Roma and IARU as well between the GAUSS group
> IARU and the Radio Amateur community.
> In conclusion dear Giulio Edusat is a satellite not of our
> interest and
> please forget the above box for shoe.
> 73" de
> i8CVS Domenico
> ----- Original Message -----
> > From: "Gi. (Ab2vy)" <giuliop70 at aol.com>
> > To: "Amsat-bb" <amsat-bb at amsat.org>
> > Sent: Tuesday, August 30, 2011 7:18 AM
> > Subject: [amsat-bb] Response to my request of
> information about EduSat
> > fromGAUSS team in Rome: Re: [CubeSat] Edusat operative
> or failure
> > Hi to all, this is what I have received from GAUSS
> team in Rome about my
> > request of Info about Edusat, they talk about of "Non
> Amateur Radio
> > satellite"...
> > 73 de Giulio AB2VY
> > Sent from my BlackBerry® wireless device
> > -----Original Message-----
> > From: Group of Astrodynamics <gauss.group at gmail.com>
> > Date: Tue, 30 Aug 2011 00:11:38
> > To: <giuliop70 at aol.com>
> > Cc: <cubesat at cubesat.org>
> > Subject: Re: [CubeSat] Edusat operative or failure
> > Dear all,
> > this is the GAUSS group which is in charge of Edusat
> > We want to calm down Giulio: Edusat mission is
> carrying on flawlessly. We
> > have communicated with it and he told us that the
> weather is a bit chilly
> > but the panorama is great.
> > We have seen that many wrong informations are reported
> on the web. For
> > example, all the radio frequencies are wrong. Edusat
> is not a radioamateur
> > satellite and has an experimental license for
> > We didn't thought our satellite could be so
> interesting for the space
> > community. Thank you for giving us so much attention.
> > 2011/8/29 Gi. (Ab2vy) <giuliop70 at aol.com>
> > > Hi to all the members, knowing that Edusat is not
> pretty a cubesat..,
> > > looking for some informations or reports about
> the bird, because ,
> > > monitoring the spectrum of UHF and S-Band from
> the launch to today , NO
> > > Signals was received from ground stations
> in US and EU (same thing for
> > > Nigeriasat) is there a problem on the mission?
> > > Thanks for any reports
> > > 73 de Giulio AB2VY
> > >
> > > Sent from my BlackBerry® wireless device
> > >_______________________________________________
> > > CubeSat mailing list
> > > CubeSat at cubesat.org
> > > http://lists.cubesat.org/mailman/listinfo/cubesat
> > > Gruppo di Astrodinamica Università degli Studi
> > > Via Salaria, 851
> > > 00138 Roma
> > >
> > > website: www.gaussteam.com
> > > tel. 0039 06 88346436
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