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CX2SA > SATDIG 24.05.15 20:53l 786 Lines 28980 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: PSAT Elements are 6 minutes early (David Haworth)
2. Camsat launches (Nicholas Mahr)
3. PSAT and Bricsat FM PSK on same frequencies (Tom schuessler)
4. AMSAT (and ARRL) at the IEEE International Microwave
Symposium 2015 - report (Patrick STODDARD (WD9EWK/VA7EWK))
5. Re: CAMSAT announces mid-July launch with six U/V
transponders (Simon Brown)
6. Re: CAMSAT announces mid-July launch with six U/V
transponders (Simon Brown)
7. PSAT (Sil)
8. PSAT (Vincenzo Mone)
9. PSAT (Mvivona)
10. KX9X/2 QRV So50 Sunday 1730z (Sean Kutzko)
11. Re: PSAT and Bricsat FM PSK on same frequencies (Robert Bruninga)
12. Re: PSAT (Robert Bruninga)
13. Re: PSAT (Robert Bruninga)
14. PSAT Status (day 4) (Robert Bruninga)
15. Nine CAS-3 satellites to launch in July (M5AKA)
----------------------------------------------------------------------
Message: 1
Date: Sat, 23 May 2015 09:37:02 -0700
From: David Haworth <davidahaworth@xxxxxx.xxx>
To: Ken Swaggart <k.swaggart@xxxxxxx.xxx>, AMSAT BB
<amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] PSAT Elements are 6 minutes early
Message-ID: <3E372D7E-21B6-425C-833A-63DC34E524BD@xxxxxx.xxx>
Content-Type: text/plain; charset=utf-8
PSAT-1>APOFF,ARISS [05/23/15 16:08:09]:T#151,879,075,549,914,873,00011100
Received APRS packet a few minutes ago at 05/23/15 16:08:09Z with
Receiver: Kenwood TM-D710GA in Packet12 mode
PC logging: Connected to PC with RS-232, using HyperTerminal to log packets.
Antenna: Arrow 2 meter vertical 15? off the ground.
My grid is CN85TQ north of Portland, OR.
Do I understand corectly that PSAT-1 was digipeated through the ISS in this
case?
I did not see this in the recent activity on
http://ariss.net/index.cgi?absolute=1
20150523155003 : RS0ISS]CQ,qAR,9W2JDY-1:]ARISS - International Space Station
20150523154803 : RS0ISS]CQ,qAR,9W2JDY-1:]ARISS - International Space Station
20150523151605 :
PP5CAM-2]APUD01,RS0ISS*,SGATE,qAo,PY5UD:=2607.01SI04948.11W&** PP5CAM/PY5UD
H24 BRAZILIAN ISS SAT GATE **
20150523151246 :
PP5CAM-2]APUD01,RS0ISS*,SGATE,qAo,PY5UD:=2607.01SI04948.11W&** PP5CAM/PY5UD
H24 BRAZILIAN ISS SAT GATE **
20150523151106 :
PP5CAM-2]APUD01,RS0ISS*,SGATE,qAo,PY5UD:=2607.01SI04948.11W&** PP5CAM/PY5UD
H24 BRAZILIAN ISS SAT GATE **
20150523150828 :
LU2HAM-6]APRS,RS0ISS*,PCSAT,RS0ISS-4,W3ADO-1,WIDE3-3,qAo,LU2HAM-1:=3120.48S/06
418.04W`Sat Gate H-24 Cordob {UISS53}
20150523150800 : RS0ISS]CQ,qAo,LU2HAM-1:]ARISS - International Space Station
73,
Clear and dark skies without RFI,
David Haworth, WA9ONY
http://www.stargazing.net/david
> On May 23, 2015, at 9:13 AM, Ken Swaggart <k.swaggart@xxxxxxx.xxx> wrote:
>
> The keps certainly look good here in Oregon. I had a predicted PSAT AOS
out over the Pacific Ocean at 16:02:01Z and picked up the first PSK-31
beacon at 16:02:16Z.
>
> Ken, W7KKE
>
> -----Original Message----- From: Robert Bruninga
> Sent: Saturday, May 23, 2015 07:51
> To: AMSAT BB
> Subject: Re: [amsat-bb] PSAT Elements are 6 minutes early
>
> Today, (over USA) I am finding satellite to be 8.5 minutes behind the
> ULTRAsat3 TLE. And get a very good match. I am listening to the PSK31 *FM*
> downlink on 435.350 +/- 5 KHz and swinging the beam and watching Doppler to
> confirm I am tracking well.
>
> But Nico (below) sees it on time in Europe. I cannot explain the
> difference... I am using the elements with an EPOC of 15 140.6701389 (shown
> below) which were released at separation. There have been no updates yet.
> As soon as I get them I will post them.
>
> I did just turn on 3 USA and 3 European packet bulletins. And adjusted the
> MA spacecraft counter so that the right bulletins will come on over the
> right continents. DIGI will remain off since PSK31 is working so well!
>
> Bob, Wb4APR
> -----Original Message-----
> From: Nico Janssen
> Sent: Saturday, May 23, 2015 10:24 AM
>
> Yesterday and today I performed detailed doppler measurements on high PSAT
> passes, both on 70 cm and on 2 m.
> I found that yesterday the satellite was 10 seconds early and today 14
> seconds early, compared to the ULTRASat3 TLE set.
>
> I wonder why you think it is 6 minutes late. Maybe you were confused by the
> ASCII telemetry transmissions on 145.826 MHz of UoSAT-OSCAR 11, which passed
> about 6 minutes after PSAT?
>
> 73,
> Nico PA0DLO
>
>
> On 2015-05-22 20:21, Robert Bruninga wrote:
>> I am finding that PSAT is 6 MINUTES behind the predictions of the
>> previously provided original Launch TLE :
>>
>> ULTRASat3
>> 1 99993U 15140.67013889 .00040043 00000-0 10235-2 0 00009
>> 2 99993 055.0004 339.9238 0251027 182.3314 074.3075 15.12517086000014
>>
>> So until I get new ones. Just point at AOS and wait 6 miuntes.
>>
>> Also, I had said not to TX PSK31 on the 10m u plink until you heard
>> the downlink. Well, that was dumb advise, because the transponder
>> does not come up unless it hears PSK31!
>>
>> So the new rule is, Listen first. If not heard, TX anyway. If not
>> heard then, Fix your problem, and try again?
>>
>> We don?t know how the power budget will work out. So all we can do is
>> watch.
>>
>> Bob, WB4APR
>> _______________________________________________
>> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
>> to all interested persons worldwide without requiring membership.
>> Opinions expressed are solely those of the author, and do not reflect the
>> official views of AMSAT-NA.
>> Not an AMSAT-NA member? Join now to support the amateur satellite program!
>> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
expressed
> are solely those of the author, and do not reflect the official views of
AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
73,
Clear and dark skies without RFI,
David Haworth, WA9ONY
http://www.stargazing.net/david <http://www.stargazing.net/david>
davidahaworth@xxxxxx.xxx
------------------------------
Message: 2
Date: Sat, 23 May 2015 23:02:39 -0400
From: Nicholas Mahr <nicholasmahr1@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Camsat launches
Message-ID:
<CAGu+VYtGs=QmHuREE=_KDfGS6Yz8V6p7UD4QhYoFK4y8vHEkKg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Very glad to hear we will get 6 linear birds up there, I just hope the
orbit is higher... I hope one day they will get around the relay issue with
HO-68, that was a awesome satellite. But anyways great news!
------------------------------
Message: 3
Date: Sat, 23 May 2015 23:00:03 -0500
From: Tom schuessler <tjschuessler@xxxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] PSAT and Bricsat FM PSK on same frequencies
Message-ID: <A92551CF-C1F9-4D0E-9D51-54F15286263B@xxxxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Okay so I am a bit confused about how this will work with two satellites
both using FM modulation on the same frequency. FM has the capture ratio
effect which basically means that if one signal is about twice as strong as
the other that signal will capture the receiver and the other one may make a
little background noise but won't be properly demodulates. If both of them
are received at the same power level pretty much you just get noise a.k.a.
SO-50 on a crowded day. So if these two satellites are transmitting
simultaneously whichever one happens to be stronger at the moment will
capture the receiver. Regardless of whether one of them has a audio
frequency modulated on the carrier at 315 hertz while the other ones at 375
you're most likely going to not here both of them simultaneously Heard or
displayed on a PSK waterfall.
This may not be an issue in the future as the satellites drift apart from
each other but right now as it seems to me they are pretty darn close so if
they were both on they would be in the beam width of any directional antenna.
Aside from the frequency of the PSK carrier itself as modulated on the FM, I
would also have to assume that the call sign of the PSK data beacon is
hopefully different. The PSK I decoded this morning had a beacon call sign
of W3ADO-5. I would have to assume there is a different beacon call sign for
both. In my reading I have not seen what the difference between the two
would be.
Looking forward to soon trying to test an uplink on 28.120 and see if I can
hear myself. This looks like a good challenge.
73. Tom. N5HYP
------------------------------
Message: 4
Date: Sun, 24 May 2015 05:14:06 +0000
From: "Patrick STODDARD (WD9EWK/VA7EWK)" <amsat-bb@xxxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] AMSAT (and ARRL) at the IEEE International
Microwave Symposium 2015 - report
Message-ID:
<CAN6TEUet-b8CdfD=pcsmcV9jdPhMXtsRO_ZVzyNoxje0OB7JHA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hi!
On Thursday, 21 May 2015, I represented AMSAT and the ARRL at the IEEE
International Microwave Symposium 2015 that was at the Phoenix Convention
Center in downtown Phoenix. The ARRL had a booth in the symposium's
University Pavilion in the exhibit hall, manned by Ward Silver N0AX during
this week. Other hams helped Ward earlier in the week, and I was able to
take a day off and spend Thursday at the booth. Along with Ward, Hermann
Schumacher DF2DR, a professor from the University of Ulm in Germany, was
also there with me. Although this was not an amateur radio event, there were
lots of hams from around the world in the exhibit hall, and many students -
high school and university students. The high school students were from
different schools around the Phoenix area, and the university students were
from universities in the USA and other countries.
In addition to talking about the ARRL and amateur radio generally, Thursday
was promoted at the ARRL booth as the satellite day, complete with on-air
demonstrations in the afternoon. I brought my satellite equipment. I brought
some AMSAT Getting Started with Amateur Satellites books, frequency guides,
and Fox flyers to go with the ARRL literature. During the morning, I learned
that Hermann had worked AO-6 in the 1970s, but had moved away from satellite
operating. He enjoys SOTA operating on HF, and I think he's looking to give
the satellites another try when he returns home.
I had 3 demonstrations during the afternoon, starting with an SO-50 pass
just after 1930 UTC (12.30pm local time). I was able to work Dave W0DHB in
Colorado from outside the convention center, and then listen to the remainder
of the pass. Although I only logged one QSO, being able to hear the pileups
on SO-50 impressed the crowd.
The FO-29 pass around 2124 UTC was the most fruitful pass of the day. Not
only was it busy, I had my largest crowd of the 3 demonstrations. We walked
across the street from the convention center to a pedestrian bridge over
Washington Street, and had a good view of the sky from over the street. I
used one FT-817ND and my Elk log periodic antenna, and this was the first
time I had worked FO-29 half-duplex. I have heard others do this, and I
remember reading an AMSAT Journal article in 2005 by Drew KO4MA detailing
how to do this. It worked! I logged 6 QSOs with stations across the
continental USA, and the crowd enjoyed hearing the locations of those
stations. Thanks to K8YSE, AA5PK, N8HM, K0MDJ, KE4KOL, and N5AFV for calling
and being a part of this demonstration! This was a great way to show off the
coverage of our satellites, and how they could be used with a very simple
station like my FT-817ND and Elk antenna.
In the crowd for this FO-29 pass were a pair of university students from
Turkey, who are working on CubeSats at their university. They were not
familiar with amateur radio, and I have since e-mailed them information
about amateur radio, amateur radio organizations in Turkey, and more
information about AMSAT. I had taken a couple of pictures of them, and I
also included the pictures with my e-mail.
The later FO-29 pass, around 2310 UTC, yielded only one QSO, with Wyatt
AC0RA. I was standing on the same pedestrian bridge outside the convention
center, pointing my antenna to the west over downtown Phoenix on a 40-degree
pass.
For those keeping score, or logs, this symposium was in grid DM33xk. I have
uploaded my QSOs to Logbook of the World, and a few have turned into QSLs. I
will also send special QSL cards to everyone I worked during these satellite
demonstrations.
Hermann DF2DR assembled a short video that includes parts of the first two
demonstrations I gave, and some photos from the symposium. You can see this
video at:
https://www.youtube.com/watch?v=EYzzgkPrmuw
This symposium is a great example of a non-ham event where an amateur radio
presence can reach many who have never heard of the hobby. Simply hanging a
poster, or laying out flyers, with references to web sites would not have
had the same effect as a booth with hams ready and able to talk about the
hobby in general, and our satellites specifically. Thanks to Ward and Sean
Kutzko KX9X at the ARRL for inviting me to be a part of the ARRL's booth at
the symposium.
73!
Patrick WD9EWK/VA7EWK
http://www.wd9ewk.net/
Twitter: @xxxxxx
------------------------------
Message: 5
Date: Sun, 24 May 2015 07:57:19 +0100
From: "Simon Brown" <simon@xxxxxxxxx.xxx>
To: "'AMSAT BB'" <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] CAMSAT announces mid-July launch with six U/V
transponders
Message-ID: <005501d095ee$e0b09b90$a211d2b0$@xxxxxxxxx.xxx>
Content-Type: text/plain; charset="utf-8"
Ah,
Reading the full press release I see they are LEOs. Must learn to read proper.
Simon Brown G4ELI
http://v2.sdr-radio.com
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Douglas Phelps
Woo Hoo
------------------------------
Message: 6
Date: Sun, 24 May 2015 07:51:46 +0100
From: "Simon Brown" <simon@xxxxxxxxx.xxx>
To: "'AMSAT BB'" <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] CAMSAT announces mid-July launch with six U/V
transponders
Message-ID: <005401d095ee$19bfa710$4d3ef530$@xxxxxxxxx.xxx>
Content-Type: text/plain; charset="utf-8"
Woo Hoo indeed.
Do we know the projected orbit yet? If just LEO it's a welcome addition, if
MEO then even better.
Simon Brown G4ELI
http://v2.sdr-radio.com
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Douglas Phelps
Woo Hoo
------------------------------
Message: 7
Date: Sun, 24 May 2015 21:04:05 +1200
From: Sil <caleriffic@xxxxxxxx.xxx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] PSAT
Message-ID: <55619405.1000800@xxxxxxxx.xxx.xx>
Content-Type: text/plain; charset=windows-1252; format=flowed
Copied down here using very basic gear :
Fm PSAT-1 To APOFF Via ARISS <UI pid=F0 Len=34 >[08:46:39]
T#134,822,077,835,838,822,00011100
May 24, 2015 (Time is UT)
Sil - ZL2CIA
------------------------------
Message: 8
Date: Sun, 24 May 2015 11:35:17 +0200
From: "Vincenzo Mone" <vimone@xxxxx.xx>
To: "Amsat - BBs" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] PSAT
Message-ID:
<!&!AAAAAAAAAAAYAAAAAAAAALgqrd2N1rRAiaQvRd7pgRDCgAAAEAAAADwvLhQVj3hMnWJ2FMn1ZJ
UBAAAAAA==@xxxxx.xx>
Content-Type: text/plain; charset="us-ascii"
Hi to the list,
this morning i had a pass of the PSAT.
I could hear it on 435.350 MHz, with the Funcube Dongle Pro Plus, but
couldn't understand how to decode it.
I've tried in USB and could hear a sound that could not understand it
Also tried in FM but could hear just the background noise.
Please anybody can tell me where to listen?
Frequency and mode and also which program to use to decode it?
Any help will be really appreciated.
73's de Enzo IK8OZV
EasyLog 5 BetaTester
EasyLog PDA BetaTester
WinBollet BetaTester
D.C.I. CheckPoint Regione Campania
Skype: ik8ozv8520
**********************************
******* GSM +39 328 7110193 *******
****** SMS +39 328 7110193 ******
*** 2nd e-mail: vimone@xxx.xx ***
*********************************
------------------------------
Message: 9
Date: Sun, 24 May 2015 08:51:29 -0400
From: Mvivona <Mvivona@xxxxx.xxx>
To: "AMSAT-BB@xxxxx.xxxx <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] PSAT
Message-ID: <2156868C-DA28-4181-A926-CA253988ABE0@xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Heard a nice strong pass of PSAT this morning over Florida at 12:35Z.
Handheld with Arrow antenna. No decode setup yet. The IOS app "GoSatWatch"
tracked it perfectly on its way over. I plan on having decode setup for the
next high pass.
Michael Vivona
Sent from my iPad
------------------------------
Message: 10
Date: Sun, 24 May 2015 09:45:34 -0400
From: Sean Kutzko <kx9x@xxxxx.xxx>
To: "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] KX9X/2 QRV So50 Sunday 1730z
Message-ID: <B267ABB1-83EE-4DA8-B861-55691EC1B291@xxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Hi all-
I'll be on SO50 from FN22 again today from 1730-1745z. This is a 50 degree
westerly pass for me, and probably the last pass I will do from FN22. Hope
to work you.
Sent from Sean's iPad
------------------------------
Message: 11
Date: Sun, 24 May 2015 10:56:55 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] PSAT and Bricsat FM PSK on same frequencies
Message-ID: <835f099c08a7be546571f9704a1ed498@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
> ... how will this work with two FM satellites on the same frequency?
The idea is to serve users no matter which spacecraft is in view. And to
not have the users have to always change frequencies and track different
objects. Imagine a camper in the field. Just point your beam towards AOS
generally and set +5 KHz tuing and when a satellite comes into view, you
can use it.
Many things separate them:
1) Distance
2) Time
3) Doppler
4) Users antenna beamwidth
When they are 5 minutes apart, the beam headings will be over 90 degrees
apart (10 to 15 dB separation), the Doppler will be typically 10 KHz
(10-15 dB separation) for a total of 20-30 dB or more to prevent capture
effect.
Since an orbit is 95 minutes long, and the satellites will drift, then 95%
of the time, this condition of at least 5 minute separation, will be met.
PSAT PSK (W3ADO-5) was built over 3 years ago and is hardwired to power up
by default (maximum chance it will work despite spacecraft packet link or
other failures)
BRIC PSK (W3ADO-6) was built just last year and has independent control by
Brno designers (can be off while sats are adjacent) It also powers up by
default (again, for maximum availability in case of bus failure).
So I think the choice pretty much meets the goals of maximum availability
to users and as independent of spacecraft failures as we could make them.
Hope that Helps.
Bob, WB4aPR
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Tom
schuessler
Sent: Sunday, May 24, 2015 12:00 AM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] PSAT and Bricsat FM PSK on same frequencies
Okay so I am a bit confused about how this will work with two satellites
both using FM modulation on the same frequency. FM has the capture ratio
effect which basically means that if one signal is about twice as strong
as the other that signal will capture the receiver and the other one may
make a little background noise but won't be properly demodulates. If both
of them are received at the same power level pretty much you just get
noise a.k.a. SO-50 on a crowded day. So if these two satellites are
transmitting simultaneously whichever one happens to be stronger at the
moment will capture the receiver. Regardless of whether one of them has a
audio frequency modulated on the carrier at 315 hertz while the other ones
at 375 you're most likely going to not here both of them simultaneously
Heard or displayed on a PSK waterfall.
This may not be an issue in the future as the satellites drift apart from
each other but right now as it seems to me they are pretty darn close so
if they were both on they would be in the beam width of any directional
antenna.
Aside from the frequency of the PSK carrier itself as modulated on the FM,
I would also have to assume that the call sign of the PSK data beacon is
hopefully different. The PSK I decoded this morning had a beacon call
sign of W3ADO-5. I would have to assume there is a different beacon call
sign for both. In my reading I have not seen what the difference between
the two would be.
Looking forward to soon trying to test an uplink on 28.120 and see if I
can hear myself. This looks like a good challenge.
73. Tom. N5HYP
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to
all interested persons worldwide without requiring membership. Opinions
expressed are solely those of the author, and do not reflect the official
views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 12
Date: Sun, 24 May 2015 11:01:36 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: Sil <caleriffic@xxxxxxxx.xxx.xx>, amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] PSAT
Message-ID: <cedae146533cbb3718f636d4c09bf6d7@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Thanks!
You are first one to send in data in the dark.
It is COLD...
Solar panels 835 and 838 =-6C
Battery at 822 = 4C
But it must have been in the evening after sunset, because I think it gets
very cold before sunrise.
Bob
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Sil
Sent: Sunday, May 24, 2015 5:04 AM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] PSAT
Copied down here using very basic gear :
Fm PSAT-1 To APOFF Via ARISS <UI pid=F0 Len=34 >[08:46:39]
T#134,822,077,835,838,822,00011100
May 24, 2015 (Time is UT)
Sil - ZL2CIA
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. AMSAT-NA makes this open forum available to
all interested persons worldwide without requiring membership. Opinions
expressed are solely those of the author, and do not reflect the official
views of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
Message: 13
Date: Sun, 24 May 2015 11:03:13 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: Vincenzo Mone <vimone@xxxxx.xx>, Amsat - BBs <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] PSAT
Message-ID: <6740e43b5b814383feacf7dcf90cd2ad@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
UHF downlink is FM. Just send audio to any PSK31 software
Bob, WB4aPR
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Vincenzo
Mone
Sent: Sunday, May 24, 2015 5:35 AM
To: Amsat - BBs
Subject: [amsat-bb] PSAT
Hi to the list,
this morning i had a pass of the PSAT.
I could hear it on 435.350 MHz, with the Funcube Dongle Pro Plus, but
couldn't understand how to decode it.
I've tried in USB and could hear a sound that could not understand it
Also tried in FM but could hear just the background noise.
Please anybody can tell me where to listen?
Frequency and mode and also which program to use to decode it?
Any help will be really appreciated.
73's de Enzo IK8OZV
EasyLog 5 BetaTester
EasyLog PDA BetaTester
WinBollet BetaTester
D.C.I. CheckPoint Regione Campania
Skype: ik8ozv8520
**********************************
******* GSM +39 328 7110193 *******
****** SMS +39 328 7110193 ******
*** 2nd e-mail: vimone@xxx.xx ***
*********************************
_______________________________________________
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Message: 14
Date: Sun, 24 May 2015 12:57:52 -0400
From: Robert Bruninga <bruninga@xxxx.xxx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] PSAT Status (day 4)
Message-ID: <c2d75473055ece34c26f8e741db03fe0@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
PSAT PSK31 435.350 MHz FM downlink is full quieting with 6 bars using a
decent UHF Yagi.
But we have not seen any users other than those using the 28.120 PSK
channel on HF normally. We welcome people to experiment with it.
Everyone within the 28.120 to 28.123 MHz ten meter passband will be
uplinked and heard on the 435.350 MHz downlink.
The Naval Academy's PSAT seems healthy with plenty of power (we are
keeping the APRS digipeater off to allow max power for PSK31).
PSAT 's radio and packet system are a simple $250 APRS tracker
http://www.byonics.com/mtt4b sent to space. The PSK31 transponder is a
single 3.4" square circuit board made by Brno Universtiy in the Czech
Republic. The CPU for controlling bulletins and timing is a simple
Parallax Basic Stamp.
PSAT is actually only about a 1U cubesat but in a 1.5U package since the
flight was available and it gave us more power for our NON-SPACE solar
cells. We are using standard silicon that are only half as efficient as
multi-junction cells, but only cost 1% as much.
PSAT has a single 21" VHF and 72" long HF whip. It has two UHF 6"
orthogonal monopoles, all of very thin Nitinol wire.
More details will eventually follow as the page will be updated over the
coming weeks. http://aprs.org/psat.html
* PSAT packet telemetry is OK, Digipeater will be off (secondary mission)
* PSAT PSK31 transponder is ON with 28.120 MHz uplink! (primary mission)
* WOD data fixed. Spin data now available. Right now it is at 3 RPM with
+Z pointing 45 deg off Sun
* Launch TLE elements (below) are still very good
* http://PCSAT.APRS.ORG web page is now capturing PSAT telelmetry that
users inject into the APRS-IS
* BRICSAT telemetry has been heard but is cycling OFF due to low power
* BRICSAT PSK31 downlink (also FM) has also been heard barely (when ON)
* USS Langley not heard
FREQUENCIES:
PSAT: 145.825 - 1200 baud AX.25 telemetry - digi off
PSAT PSK31-5: 435.350 FM down, 28.120 SSB PK31 uplink - Brno University
Xponder
BRICsat: 437.975 - 9600 baud telemetry evry 20s
BRICsat PSK31-6 - same as PSAT but PSK TLM on 375 Hz (PSAT on 315 Hz)
USS Langley - 437.475 9600 baud telemetry <== CORRECTION
ULTRASat3 <these are still tracking well>
1 99993U 15140.67013889 .00040043 00000-0 10235-2 0 00009
2 99993 055.0004 339.9238 0251027 182.3314 074.3075 15.12517086000014
Bob, WB4APR
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Message: 15
Date: Sun, 24 May 2015 18:42:47 +0000 (UTC)
From: M5AKA <m5aka@xxxxx.xx.xx>
To: AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Nine CAS-3 satellites to launch in July
Message-ID:
<173989375.2041369.1432492967335.JavaMail.yahoo@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Alan BA1DU has provided some additional information on the July launch and
has confirmed that CAS-2A and CAS-2B, also with linear transponders, will be
launched at a later date.
Nine CAS-3 amateur radio satellites to launch in July
http://amsat-uk.org/2015/05/24/nine-cas-3-ham-radio-satellites/
73 Trevor M5AKA
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Subject: Digest Footer
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Sent via amsat-bb@xxxxx.xxx.
AMSAT-NA makes this open forum available to all interested persons worldwide
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AMSAT-NA.
Not an AMSAT member? Join now to support the amateur satellite program!
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End of AMSAT-BB Digest, Vol 10, Issue 146
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