Hi all,
He is right now in JM96 in the Mediterranean on route to Bulgaria.
73 OZ1MY
Ib
___
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Hi all,
Another question AO 73
I made my first contact on AO 73 this weekend with KB2M. I read on the BB
that the frequency was about 10 Khz higher for the uplink and that the
linear transponder wss not stable yet. I did not expect the Doppler to be
shifting as much as it was on both the
Sorry David for my mistake.
Are my Keps okay?
- Original Message -
Hi Richard.
If you could make the subject something like AO-73 it helps your message get
stored in the correct place in the AMSAT archives which are stored in thread
and date order.
AO-73 will typically
I noticed over the years that satellite beacon downlinks transmit their
telemetry in a form that must be translated by a telemetry app to their
engineering values. Since the information is transmitted from the satellites
why not provide the engineering values in the downlink without the extra
step
I also worked AO-73 for the first time this weekend (thanks all involved
for the new sat) and noticed the frequency shift also. As the bird came up I
found my D/L at about 5k higher than the advertised center frequency. What
was different was that by the end of the pass, the D/L ended up about
Wow! 2 watts or so EIRP from inside. That's incredible. What was the
elevation of the satellite at the time?
73,
Paul, N8HM
On Sun, Dec 8, 2013 at 11:39 PM, Wyatt Dirks wyattdi...@msn.com wrote:
Well tonight I was trying a few things on ao-73. But mid pass I got bored
if you will and I
David,
It is much more efficient in terms of the information transmitted, hence power
and bandwidth, to use
the raw binary/hex for transmission. It also saves the programming and memory
in the satellite CPU.
The combination frees up resources which can be otherwise used. It works well
given
Answer: Engineering efficiency..
There is far more computing power on the ground than the satellite. Also,
KISS principle. Also, calibration can be done without modifying flight
code. And finally, it is far more compact to send binary or hex than
human readable decimal.
Bob, WB4aPR
Hi,
In the case of FUNcube the on board sensors give their readings as n bit
values when they are interrogated. This data is agregated into a data frame
for transmission using forward error correction to improve the s/n ratio.
The problem with on board conversion is that you would have to store
Hello,
Listened for Trailblazer (possible 39382)
during this morning's pass. Heard a few
CW characters on 437.428 at 1432 UTC,
which could have been AAuSat-3, but no
1200 AFSK.
Nothing heard from DragonSat on 145.870.
DO-64 was on and loud near the end of
the 2013-064 train pass.
73 Armando
On 12/9/13, Alan wa4...@gmail.com wrote:
David,
It is much more efficient in terms of the information transmitted, hence
power and bandwidth, to use
the raw binary/hex for transmission. It also saves the programming and
memory in the satellite CPU.
The combination frees up resources which
Hi All,
Just to confuse ..FUNcube-1 transmits some telemetry in RAW and some in
human readable format. The latter comes from the GOMspace EPS which is
powering our baby!
cheers
Graham
G3VZV
-Original Message-
From: Alan
Sent: Monday, December 09, 2013 2:44 PM
To: 'Dave Marthouse'
Following is from the American Geophyiscal Union website (time is San
Franscisco time)
http://fallmeeting.agu.org/2013/media-center/press-conferences/#juno
Science from Juno’s Earth Flyby
Tuesday, 10 December
10:30 a.m.
In October, the Jupiter-bound Juno spacecraft did a flyby of Earth
Nothing heard from DragonSat on 145.870. (9600 baud AX.25)
A crude test of a Dragonsat model with the antenna un-released was still
radiating on the order of 26 to 36 dB down.
From now on, instead of FM, we are going to listen with an SSB receiver
and see if we hear the 30 second chirps.
The $50sat team is asking for help form our friends in the southern hemisphere
in capturing telemetry form $50sat. We are trying to determine the charging
characteristics of the power system. The three team members all live above 40
degrees north and the satellite does not warm up enough during
Hello to all
Tomorrow, the engineering faculty of the University of Cienfuegos (UCF) will be
celebrating its XII Anniversary. There will be some conferences and
presentations about engineering issues. Each researching group will talk about
their future goals and projects. I am member of one of
This is great
Rich
W4BUE
- Original Message -
From: Hector Luis HLMS. Martinez Sis hmarti...@ucf.edu.cu
To: AMSAT-BB AMSAT-BB@amsat.org
Sent: Monday, December 09, 2013 3:38 PM
Subject: [amsat-bb] Satellite demonstration at the University of Cienfuegos
Hello to all
Tomorrow, the
Hello all.
I got the interest bug of working the radio satellites. But with all this
new satellites going up, im a little overwhelmed about information on what
each one does or frequencies ect. Basically is there a satellite for dummy
site that lists what each birds information is??.. currently
On 12/9/13, Todd Bloomingdale tbloomingd...@gmail.com wrote:
Hello all.
I got the interest bug of working the radio satellites. But with all this
new satellites going up, im a little overwhelmed about information on what
each one does or frequencies ect. Basically is there a satellite for
Todd, pls take a look here : http://ww2.amsat.org/?page_id=1869
(baby steps are ok in this endeavor)
GL, TK
K7TRK
-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Todd Bloomingdale
Sent: Monday, December 09, 2013 1:06 PM
To:
... Todd, pls take a look here : http://ww2.amsat.org/?page_id=1869
All excellent articles, indeed. But Todd is right where I was several years
ago. If he were to take
the cited references as his source for info, he'd be programming freqs for
birds long deceased ...
For current info (as of a
..stop the madness...!
-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Clint Bradford
Sent: Monday, December 09, 2013 6:36 PM
To: AMSAT BB
Subject: [amsat-bb] Re: Satellite question
... Todd, pls take a look here :
For the past week or so, I don't seem to be receiving the Daily Digest
of AMSAT-BB, as I was before. I've tried all the usual fixes, without
success:
1.) Checked spam filter settings, junk folder, and made sure that
AMSAT-BB was on my white list.
2.) Checked the trash folder and message
fyi, SO-50 is only workable during daylight passes, its battery is dead and
only works on solar power. hope this helps, I know it threw me for a few nights
There are only 10 types of people in the world:
Those who understand binary and those who don't
In today's email world 97% of all
To follow up on Bob's comment. If you send the raw analog sensor data
to the ground you can
- Fix mixed up channels if you got them wrong before launch. This
happened with the 1990 AMSAT Microsats and I've seen it since then in
other birds.
- Change calibration values if found to be wrong
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