[amsat-bb] ISS Unattended Beacon Theory (UBT) - PROVE ME WRONG!

Robert McGwier rwmcgwier at gmail.com
Thu Apr 21 16:11:09 UTC 2016

That is what it is now Bob.  It is people on the ground doing the bleeping
and they are using it as a pseudo bent pipe transponder doing demod/remod
constantly unattended.  is that how it was intended to be used?

Tell me how to stop this behavior without turning off UI?  Or maybe you
feel this is not a real impediment to comms.  The originator of this thread
seems to feel it is.


On Thu, Apr 21, 2016 at 9:09 AM, Robert Bruninga <bruninga at usna.edu> wrote:

> Do you mean turn it into another BLEEPsat of our own making?..
> -----Original Message-----
> > Subject:  ISS Unattended Beacon Theory (UBT) - PROVE ME WRONG!
> >
> > We should turn off digipeating of UI frames.  One bit flip and it ends.
> > The ISS can beacon but this activity will end.
> > Bob
> On Tue, Apr 19, 2016 at 12:52 PM, <skristof at etczone.com> wrote:
> > A short exchange of name, QTH (Grid Square &/or state), then a QSL to
> > acknowledge. Kind of like JT65 except faster than growing grass.
> > I use... macros that can be set up with all the info, then sent with the
> > push of a button. It can be done if you're paying attention and catch
> > the breaks between beacons.
> > Steve AI9IN
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Bob McGwier
Founder, Federated Wireless, Inc
Founder and Technical Advisor, HawkEye 360, Inc
Research Professor Virginia Tech
Dir. Research:  The Ted and Karyn Hume Center for National Security and
Senior Member IEEE, Facebook: N4HYBob, ARS: N4HY
Faculty Advisor Virginia Tech Amateur Radio Assn. (K4KDJ)
Director of AMSAT

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