Order Tray | Contact Us | Home | SIG Lists

[aprssig] ISS donwlink of SSTV! (and APRS beacons)

Robert Bruninga bruninga at usna.edu
Fri Oct 10 23:06:36 UTC 2008


> Where are the details on this?  
> What frequency?  What's the ground track?

ISS is presently passing over the northern hemisphere during the
mid-morning to mid-evening giving plenty of pass opportunities
for northern hemisphere stations during the day and evening.

Downlink will be 145.800 I assume.

Cheap plug:
But if someone in each state was running APRSdata or DIGI_NED
both of which put out APRS objects whenever the ISS (or other
mobile satellite) is in view, this real-time info would show up
on the front panel of everyone's mobile APRS radio when it was
in view and people coiuld QSY to the frequency listed there on
the radio..

Also their DX STATION list in these radios would get an updated
satellite schedule every 10 minutes.

Of course, I talk about it, and I have not had APRSdata on the
air in 5 years either... Keep hoping somone will write a windows
version... Maybe APRS-KIOSK can do it?

Bob, Wb4APR
> Scott
> N1VG
> 
> Robert Bruninga wrote:
> >> ISS SSTV Operations Planned for October 12
> >> from 18:00-21:00 UTC.  This is your opportunity...
> > 
> > Due to hightened interest to the general Ham radio community
for
> > this mission, I again suggest that all Shuttle Audio
> > Retransmission Faclities consider adding an old TNC and
> > 144.39MHz APRS beacon to their system.  This TNC will alert
all
> > surrounding mobiles (with APRS display radios D7, D700,
D710,
> > VX8R, HAMHUD's, etc) that the retransmission is on the air
and
> > what frequency to tune.
> > 
> > Just load the correct beacon text, set the rate to 1 minute
and
> > connect the TNC's XCD (external carrier detect) to the
re-trans
> > PTT line, then whenever the re-trans is on the air, then a 1
> > minute announcement beacon will show up on  all surrounding
> > radios.
> > 
> > You may have to invert the sense of the XCD line.  Here is a
web
> > page on this APRS local alert system:
> > www.aprs.org/On-Air-beacons.html
> > 
> > I appologize for repeating myself, but no sense in adding
this
> > system after the Shuttle is back on the ground!  Now's the
time!
> > 
> > Here Is how it can look on the front panel of an APRS radio
to
> > mobiles in the area:
> > 
> > +------------+
> > | 147.45NAN  |
> > | SAREX ReTX |
> > | SSTV ops   |
> > | Goddard    |
> > +------------+
> > 
> > Where 147.45NAN is the retrans freq for the WA3NAN radio
club at
> > NASA Goddard, for example.
> > 
> > A nice reminder that HAM Radio is again active in SPACE!
> > 
> > Who will put out these beacons unless YOU hook it up for
your
> > local audio-retrans guy?
> > 
> > Bob, Wb4APR
> > 
> > 
> > _______________________________________________
> > aprssig mailing list
> > aprssig at lists.tapr.org
> > https://lists.tapr.org/cgi-bin/mailman/listinfo/aprssig
> > 
> > 
> 
> 





More information about the aprssig mailing list