[aprssig] ISS donwlink of SSTV! (and APRS beacons)
Joseph M. Durnal
joseph.durnal at gmail.com
Fri Oct 10 18:19:11 CDT 2008
I'm not sure if he is running APRSdata or DIGI_NED but we have a
station here in western Maryland that puts out an APRS object for the
ISS and a couple of satellites.
73 de Joseph Durnal NE3R
On Fri, Oct 10, 2008 at 7:06 PM, Robert Bruninga <bruninga at usna.edu> wrote:
>> 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
>> 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
>> > 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
>> > surrounding mobiles (with APRS display radios D7, D700,
>> > VX8R, HAMHUD's, etc) that the retransmission is on the air
>> > what frequency to tune.
>> > Just load the correct beacon text, set the rate to 1 minute
>> > connect the TNC's XCD (external carrier detect) to the
>> > 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
>> > page on this APRS local alert system:
>> > www.aprs.org/On-Air-beacons.html
>> > I appologize for repeating myself, but no sense in adding
>> > system after the Shuttle is back on the ground! Now's the
>> > Here Is how it can look on the front panel of an APRS radio
>> > 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
>> > local audio-retrans guy?
>> > Bob, Wb4APR
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