Good Morning, Everyone.
OK...so as I woke up this morning at 6 am, I was greeted by the beep from
the Orbitron program letting me know that the ISS was close. This
morning...overhead...it was perfectly clear. I could see the Moon and Venus
(I think). To the south were Lake Effect Snow clouds...and in the early
dawn sky they appeared JET BLACK. At approximately 6:15, the ISS flew past
and was absolutely glowing from the sun rising and the black background.
Again, truly an awesome sight.
John Marranca, Jr
PBX Technician/Shop Steward CWA Local 1122
BN Systems, Inc
Orchard Park, NY
The value of sending an Email via APRS Satellite in an emergency
is that it is a set-and-forget outward bound communcations mode.
Perfect for real emergencies.
You don't need anything but a 2m radio and a TNC. No special
software. No special hardware, no satellite predictions, and no
time consuming operating.
Just set the Email message in your TNC beacon, turn it on, and
then return to all the emergency tasks at hand. Think Katrina.
You wanted to report your status, but had no time for the tedium
of "operating" to find a means to get your traffic out. There
was just too much else to do...
In real emergencies, those affected have far too much else to do
than to try to make a satellite contact to report back their
location and status. But using an APRS beacon allows you to set
up your outgoing message (or email), with no knowledge required
about satellite pass times. Sooner or later an APRS satellite
will pass over your location and your beacon and EMAIL will get
in without any effort on your part.
Your emergency health and welfare email will not only get
relayed by the satellite to a SATgate, but should then be
automatically emailed to the intended recepient. You did not
need any special software, no satellite predictions, no special
hardware other than a TNC and 2m radio.
This is the ideal first-response health-and-welfare-status
reporting mechanism. Put your beacon on the air and then do all
the rest of the emregency work you have to do, and do not get
burdened with having to sit and "operate" to try to get your
The Satellite Simulated Emergency Test web page shows you how to
use any TNC to set up your outgoing EMAIL...
Try it with your old TNC. Anyone can do it. But the format
must be correct for the packet that you place in your BECONTEXT:
BT :EMAIL :[email protected] your_message_goes_here...
Where 4 spaces are required after the word EMAIL and then the
"email(a)address.com" must be the intended recepient.
Its only one line. But in an emergency, ONE LINE is
exceptionally valuable, and has a great chance of getting
Not only will it get delivered (if the infrastructure works) but
you can also just check the downlink yourself to see if it got
Try it this week while PCSAT is working!
> I just wonder how successful digi'ing via PCSAT using a TH-D7 has been?
I tried Sunday during a 60 degrees pass with
- THD7 full battery (=2.5W)
- 4 elements DL6WU hand held beam
With this setup I can work AO51 always noise-free.
But I could not get a single packet over PCSAT. I think
this is not so much due to PCSAT, but more due to the
fact that it sees 10..20 stations transmitting at the
same time... only the strongest one wins :-(
Sunday I also saw MAILBOX traffic, that can also reduce
the APRS success rate !
Would be interesting to read more reports.
The good news is of course that Europe is a big PCSAT user group !
No problem. :) I managed to get the ax25 stuff
installed and working on my linux box; at least
in receive. Now that I know that works, I'll have to
build an interface for the transmit side. Thanks
for your offer of help, and to everyone else that
Bob - AE6RV
--- George Henry <ka3hsw(a)earthlink.net> wrote:
> Oops... Missed that you were looking for something for Linux.
> ----- Original Message -----
> From: "Bob Stewart" <bob(a)evoria.net>
> To: "Amsat-BB" <amsat-bb(a)amsat.org>
> Sent: Monday, November 05, 2007 4:26 PM
> Subject: [amsat-bb] Re: Email via Satellite Simulated Emergency Test
> > --- Robert Bruninga <bruninga(a)usna.edu> wrote:
> >> You don't need anything but a 2m radio and a TNC. No special
> >> software. No special hardware, no satellite predictions, and no
> >> time consuming operating.
> > Bob can you or anyone tell me if there are software TNCs for
> > soundcards out there? I know almost nothing about APRS or
> > even where to turn to get useful information. Unfortunately,
> > buying a TNC is simply not going to happen at this time. I am
> > a Linux user.
> > Bob - AE6RV
iam have icom ic-pcr1500 need software doppler for my rig
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I took these shots this morning from my front yard here in Orlando.
Not great, but interesting. I believe on photo 3, you can see the two
individual spacecraft. Just used my Olympus C750UZ. No zooming used.
I like photo 1 a lot since you can view the Big Dipper and polaris in
relation to the spacecrafts. The direction of travel is top left angling
down to lower right.
From: sarex-bounces(a)AMSAT.Org [mailto:[email protected]] On Behalf Of
Sent: Monday, November 05, 2007 9:07 AM
To: Arthur Rowe; SAREX(a)AMSAT.Org
Subject: [sarex] Re: A Fantastic Monday Morning Sky Show
Quite a sight this morning - the moon, Venus, and the ISS and the Shuttle
several degrees apart going from SW to NE almost straight
overhead. WOW! perfect viewing conditions.
Sent via sarex(a)amsat.org. Opinions expressed are those of the author.
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--- Trevor <m5aka(a)yahoo.co.uk> wrote:
> The BBC document is still on their website but it's moved to this URL:
This document is a year later than the one I originally mentioned and has
changed in some areas.
It references a Wind Farm RF planning tool
The site says:
"This tool is provided for the guidance of Wind Farm developers. The results of
a query are a rough estimate of populations that may suffer interference from
wind farms built at the locations specified, ..."
73 Trevor M5AKA
Yahoo! Answers - Got a question? Someone out there knows the answer. Try it
In a message dated 04/11/2007 15:41:26 GMT Standard Time,
Does anyone know if retired birds are switched ON or OFF once they get
boosted into a retirement orbit ? Could still be useful to us even from there.
Richard Limebear G3RWL
After the 15 year (ish) period, the satellite is normally switched off as it
can no longer point its high gain antennas at the correct point on the earth
after the station keeping fuel has run out.
For us it just means we need switchable antennas that can be swapped 15
years after launch.
In every day use I suspect there could well be some loss of service during
eclipse. On GEO sats the DC power required to run the transponders normally
is a little less than the power from the solar array.
However, when the satellite enters eclipse, the TV etc transponders are run
from the batteries. I suspect that at this point, AMSAT would be switched off
or into some low power mode until the eclipse has passed. The extra battery
power needed for operation of AMSAT and the commercial transponder during
eclipse would require a significant mass increase of the on-board batteries.