[amsat-bb] Re: Kenwood TS-2000 Birdies

[Alan Cresswell]

Hi Nate,

You will certainly have no problems at 437.405 with the TS-2000.  The birdie
only affects the spot frequency of 436.800.  You could in fact operate quite
happily on 436.805 if you needed to.

Alan
ZL2BX

-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Nathaniel S. Parsons
Sent: Tuesday, 15 September 2009 06:00
To: AMSAT-BB
Subject: [amsat-bb] Kenwood TS-2000 Birdies

Hi all,

I am a student on CUSat , one of Cornell
University's satellite project teams. You may remember me from my previous
call for help to resolve our antenna crises. I don't think I sent a
follow-up to the bb, but we were able to recover from that crisis in large
part due to your help, so thank you.

Recently, it has come to my attention that the TS-2000, the transceiver in
our ground station, has a birdie at 436.800MHz. To me, this seems very close
to the frequency coordinated for our satellite by the IARU, 437.405 MHz.
Should we worry about this, or will we be fine with the TS-2000?

If the consensus is that it's best to switch radios, what would be best for
us? We don't need anything more than VHF/UHF, and computer control.

Thanks,
Nate Parsons
KC2SVI
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[amsat-bb] Re: SumbandilaSat keps

[ps8rf Piraja]

Hello Kostas,

The keps of Sumbandila were not available so far. But the rocket launch is 
scheduled for 19:55 Moscow time.


73,

Pirajá, PS8RF

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[amsat-bb] Re: Kenwood TS-2000 Birdies

[Nick Pugh K5QXJ]

Your radio will work fine at 437.405 that is the radio in our ground station

Nick UL CAPE Team

-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Nathaniel S. Parsons
Sent: Tuesday, September 15, 2009 1:00 AM
To: AMSAT-BB
Subject: [amsat-bb] Kenwood TS-2000 Birdies

Hi all,

I am a student on CUSat , one of Cornell
University's satellite project teams. You may remember me from my previous
call for help to resolve our antenna crises. I don't think I sent a
follow-up to the bb, but we were able to recover from that crisis in large
part due to your help, so thank you.

Recently, it has come to my attention that the TS-2000, the transceiver in
our ground station, has a birdie at 436.800MHz. To me, this seems very close
to the frequency coordinated for our satellite by the IARU, 437.405 MHz.
Should we worry about this, or will we be fine with the TS-2000?

If the consensus is that it's best to switch radios, what would be best for
us? We don't need anything more than VHF/UHF, and computer control.

Thanks,
Nate Parsons
KC2SVI
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[amsat-bb] Re: SatPc32

[Nigel Gunn G8IFF/W8IFF]

Orbitron... it's also free.

WCP wrote:
> Thanks for help with SatPc32.Must be a better tracking program!
> Any suggestions?

-- 
Nigel A. Gunn,  1865 El Camino Drive, Xenia, OH 45385-1115, USA.  tel +1 937 
825 5032
Amateur Radio G8IFF W8IFF (was KC8NHF),  e-mail ni...@ngunn.net   www  
http://www.ngunn.net
Member of  ARRL, GQRP #11396, QRPARCI #11644, SOC #548,  Flying Pigs QRP Club 
International #385,
Dayton ARA #2128, AMSAT-NA LM-1691,  AMSAT-UK 0182, MKARS,  ALC, 
GCARES, XWARN.

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[amsat-bb] Re: Help

[Alan P. Biddle]

Jack,

Depends on what you mean by "loaded into SATPC32."  As far as the keps are
concerned, preliminary keps will probably appear here around the time of
launch, and then in the tle-new download file initially.  They will at first
be with some sort of obscure object name, which will eventually get an Oscar
number.  You will then select it in the Satellites window.

As for the Doppler tracking, you will need to add that to the DOPPLER.SQF
file as another poster has explained.  Based on the posted frequencies, I
have added the following to my file:

SumbandilaSat,435350,145880,FM,FM,NOR,0,0
SumbandilaSat,435300,0,FM,,NOR,0,0

The first will be the voice repeater and parrot, and the second the voice
beacon.  Note that to use the Doppler tracking, the name will need to match
the common name in the keps list.

When they release the needed tones to select the repeater or parrot, you
will need to go into the SUBTONE.SQF file and add them in.  Docs in the
file.

There really isn't any other way to switch between the two versions of
SATPC32 without shutting down the first and then starting the second.  The
compete for the same resources, including the CAT and tracking functions.

Alan
WA4SCA



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[amsat-bb] Re: SatPc32

[Tim - N3TL]

To WCP - can you provide a little more information?

You write, "Must be a better tracking program."   Better for what?  What is it 
that you're not able to do - or find unwieldy - in SatPC 32?

Here, I have installed and used SatPC 32, Orbitron, and Ham Radio Deluxe with 
it's Satellite Tracking module. 

I was interested in learning how all three handled computer-controlled Doppler 
tuning. From here, SatPC 32 is the easiest to get going for Doppler, and the 
easiest to fine-tune "on the fly" during a pass. HRD's Satellite Tracker is my 
favorite of the three, and I suspect it is nearly as easy to adjust on the fly 
as SatPC 32. To get it running, however, one has to launch the full HRD 
application; connect radio(s) to HRD; then launch the satellite tracker and 
connect radio(s) to it. It appears as though the software is asking the Atom 
processor in my netbook to use more muscle than it has, and I continue to have 
issues with the program locking up. I wish Simon would make it possible to ONLY 
launch Satellite Tracker and connect radios to it, without having them 
connected to HRD.

Until I got the computer and cables necessary to try computer-controlled 
Doppler tuning (i.e., when I just wanted to track the satellites and know when 
passes would include me in the footprints), I used Orbitron. I still choose it 
when that's all I'm interested in, and it provides an easy way to compile and 
print pass schedules that I find one of its most useful features. When I'm not 
worried about computer-controlled Doppler tuning, Orbitron is what I use.

As Mr. Gunn noted, it is free - but so is SatPC 32, if you don't mind entering 
coordinates every time you launch the program. HRD is free, too..

73 to all,

Tim - N3TL
Athens, Ga. - EM84ha



From: Nigel Gunn G8IFF/W8IFF 
To: WCP 
Cc: amsat-bb@amsat.org
Sent: Tuesday, September 15, 2009 7:38:50 AM
Subject: [amsat-bb] Re: SatPc32

Orbitron... it's also free.

WCP wrote:
> Thanks for help with SatPc32.Must be a better tracking program!
> Any suggestions?

-- 
Nigel A. Gunn,  1865 El Camino Drive, Xenia, OH 45385-1115, USA.  tel +1 937 
825 5032
Amateur Radio G8IFF W8IFF (was KC8NHF),  e-mail ni...@ngunn.net      www  
http://www.ngunn.net
Member of  ARRL, GQRP #11396, QRPARCI #11644, SOC #548,  Flying Pigs QRP Club 
International #385,
            Dayton ARA #2128, AMSAT-NA LM-1691,  AMSAT-UK 0182, MKARS,  ALC, 
GCARES, XWARN.

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[amsat-bb] AO-7 question

[Randy]

I , for the first time, tried to work AO-7.
I could hear the beacon.
The logs indicated it was in Mode A ?
And that's what I tried .. But heard nothing.
Not my own signal or anyone elses ..
Was it active over the US during the 9ish AM pass?

Randy - N2CUA


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[amsat-bb] Re: Kenwood TS-2000 Birdies

[Nathaniel S. Parsons]

Thanks for the quick replies, and esp. with the answer I was hoping for!

-Nate
KC2SVI

On Tue, Sep 15, 2009 at 6:09 AM, Nick Pugh K5QXJ wrote:

> Your radio will work fine at 437.405 that is the radio in our ground
> station
>
> Nick UL CAPE Team
>
> -Original Message-
> From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
> Behalf Of Nathaniel S. Parsons
> Sent: Tuesday, September 15, 2009 1:00 AM
> To: AMSAT-BB
> Subject: [amsat-bb] Kenwood TS-2000 Birdies
>
> Hi all,
>
> I am a student on CUSat , one of Cornell
> University's satellite project teams. You may remember me from my previous
> call for help to resolve our antenna crises. I don't think I sent a
> follow-up to the bb, but we were able to recover from that crisis in large
> part due to your help, so thank you.
>
> Recently, it has come to my attention that the TS-2000, the transceiver in
> our ground station, has a birdie at 436.800MHz. To me, this seems very
> close
> to the frequency coordinated for our satellite by the IARU, 437.405 MHz.
> Should we worry about this, or will we be fine with the TS-2000?
>
> If the consensus is that it's best to switch radios, what would be best for
> us? We don't need anything more than VHF/UHF, and computer control.
>
> Thanks,
> Nate Parsons
> KC2SVI
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>
>
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[amsat-bb] SumbandilaSat launch postponed!

[Tim - N3TL]

Hey everyone,

I just found the following on the AMSAT-South Africa home page:

Due to high winds at the launch site and some telemetry issues on the rocket  
the launch has been delayed for 24 hours and will now take place on 16 
September at around 15:45 UTC
 
73 to all,

Tim - N3TL
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[amsat-bb] AMSAT Field Day

[Tim - N3TL]

Congratulations to John, K8YSE, and Doug, KD8CAO, for their winning effort in 
the AMSAT Field Day competition - operating as W8DXA.

That's their mobile-antenna setup on the cover of the new issue of The AMSAT 
Journal, which arrived here today. 

It was nice to see an increase of entries this year. Here's hoping that trend 
continues well into the future. 

Thanks to Bruce, KK5DO, for taking the time to coordinate the AMSAT Field Day 
contest and for providing the article and final results to the Journal.

73 to all,

Tim - N3TL
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[amsat-bb] East Coast Launch tonight!

[Robert Bruninga]

If skies are clear, look for a rocket launch from Wallops
tonight between 7:30 to 7:57 PM.  

It should be visible over most of the mid-atlantic states.  It
is an optical tracking experiment, so will only launch if skies
are clear.  Alternate launch dates are clear nights from 16th
through the 20th.  The launch status can be followed on Twitter:
http://twitter.com/NASA_Wallops

This is not the one that will be deploying a CUBESAT built by
Students in Kentucky.  But it is a good exercise in preparation
for that launch sometime in October.  That future flight will
contain 1200 baud packet telemetry on the national APRS freuency
of 144.39 for maximum probability of detection.  That mission
will last 10 minutes as the rocket heads southeast to an
altitude of 350km before returning to earth minutes later.

People with beams are encouraged to point to Wallops on that
future flight for maximum probability of getting all packets.

Bob, Wb4APR

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[amsat-bb] Geosyro orbit.

[Joe]

Hi All,

I have a couple of questions,  How big is the earth from a geosyncronous 
(sp?) orbit.

Like the Moon from Earth is roughly 1/2 a degree.

What is the earth from a geo orbit? anyone know?

Joe WB9SBD
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[amsat-bb] Re: Geosyro orbit.

[Ken Ernandes]

The Earth is approximately 17.4-deg in diameter (8.7-deg radius) from 
Geosynchronous Earth Orbit (GEO).

73, Ken N2WWD




-Original Message-
>From: Joe 
>Sent: Sep 15, 2009 12:07 PM
>To: BB 
>Subject: [amsat-bb]  Geosyro orbit.
>
>Hi All,
>
>I have a couple of questions,  How big is the earth from a geosyncronous 
>(sp?) orbit.
>
>Like the Moon from Earth is roughly 1/2 a degree.
>
>What is the earth from a geo orbit? anyone know?
>
>Joe WB9SBD
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[amsat-bb] Cubesat launch Sept. 23rd

[Bruce Robertson]

According to this report
http://www.hindu.com/2009/09/13/stories/2009091360321100.htm PSLV-C14,
which will carry cubesats, is to launch on 23rd of Sept.
 UWE 2 (A AX25 and CW downlink on 437.385 MHz)
SwissCube 1 (A downlink frequency of 437.505MHz)
 BeeSat ( 70cm Transmit power: 0.5 W GMSK at 9600/4800 bits/s)
ITU-pSat (radio info?)

Bob mentioned KySat is going up pretty soon, too. Does anyone know if
it will have the capability to be configured as a FM transponder as
was planned a while back?

73, Bruce
VE9QRP
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[amsat-bb] Re: Geosyro orbit.

[Joe]

Thanks all that answered.

Reason asking is  as many of you already know on Dish Network TV,  they 
have this channel called Dish Earth,  Basically it's a nice color camera 
looking back at the earth.  it's full screen in size  so  I guess about 
a 20 degree field of view.

Part that is cool is to check it as the day goes by watching the phase 
of the earth change as the sun changes position.

And now thatwe are getting close to equinox  the sun actually passes 
behind the earth at about 2:30 AM.

I taped it last nigh to see what happens as it passes behind,  pretty 
cool  looks almost like the last phases of a total solar eclipse with a 
diamond ring effect etc.
And you can see just as it passes behind the gain on the camera opens 
wide open and lits of i'm assuming digital noise appears. or if not 
noise I'm thinking damaged pixles for they never change position.

But the bending of the sunlight is cool too the earth remains as a thin 
line around the horizion,  way cool,  and amazing how stable the orbit 
seems to be.  if there is any wobble due to an elliptical orbit  I can't 
see it,  it must be extremely small.

Too bad we cant convince these geo bird people to share some of their 
power,  imagine how wide of a linear transponder we could have for the 
same power this one camera thats running 24/7 has to consume.  YIKES!

Joe WB9SBD

Ken Ernandes wrote:

>The Earth is approximately 17.4-deg in diameter (8.7-deg radius) from 
>Geosynchronous Earth Orbit (GEO).
>
>73, Ken N2WWD
>
>
>
>
>-Original Message-
>  
>
>>From: Joe 
>>Sent: Sep 15, 2009 12:07 PM
>>To: BB 
>>Subject: [amsat-bb]  Geosyro orbit.
>>
>>Hi All,
>>
>>I have a couple of questions,  How big is the earth from a geosyncronous 
>>(sp?) orbit.
>>
>>Like the Moon from Earth is roughly 1/2 a degree.
>>
>>What is the earth from a geo orbit? anyone know?
>>
>>Joe WB9SBD
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>>
>>
>
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>  
>
>
>
>
>No virus found in this incoming message.
>Checked by AVG - www.avg.com 
>Version: 8.5.412 / Virus Database: 270.13.99/2372 - Release Date: 09/15/09 
>05:59:00
>
>  
>
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[amsat-bb] Re: Geosyro orbit.

[Alan VE4YZ]

I can't believe I couldn't Google this, so

Earth Radius at equator = 6378 km
GeoSynch orbit = aprox 36000 km above sea level or aprox 30, from center
of earth

Angle = 2TAN 6378/3 = aprox 24 degrees.

 

-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Joe
Sent: September 15, 2009 11:07 AM
To: BB
Subject: [amsat-bb] Geosyro orbit.

Hi All,

I have a couple of questions,  How big is the earth from a geosyncronous
(sp?) orbit.

Like the Moon from Earth is roughly 1/2 a degree.

What is the earth from a geo orbit? anyone know?

Joe WB9SBD
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[amsat-bb] Re: Geosyro orbit.

[Alan VE4YZ]

Duh, distance from center of earth is 42000km   ( add, don't subtract dummy
)

So it is 2TAN 6378/42000 = about 17 degrees.

 

-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Alan VE4YZ
Sent: September 15, 2009 11:42 AM
To: 'Joe'; 'BB'
Subject: [amsat-bb] Re: Geosyro orbit.

I can't believe I couldn't Google this, so

Earth Radius at equator = 6378 km
GeoSynch orbit = aprox 36000 km above sea level or aprox 30, from center
of earth

Angle = 2TAN 6378/3 = aprox 24 degrees.

 

-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Joe
Sent: September 15, 2009 11:07 AM
To: BB
Subject: [amsat-bb] Geosyro orbit.

Hi All,

I have a couple of questions,  How big is the earth from a geosyncronous
(sp?) orbit.

Like the Moon from Earth is roughly 1/2 a degree.

What is the earth from a geo orbit? anyone know?

Joe WB9SBD
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[amsat-bb] Re: Geosyro orbit.

[Alan VE4YZ]

Ah Hen, , you beat me fair and square and got the correct answer the first
time too :-)


-Original Message-
From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On
Behalf Of Ken Ernandes
Sent: September 15, 2009 11:26 AM
To: Joe; BB
Subject: [amsat-bb] Re: Geosyro orbit.

The Earth is approximately 17.4-deg in diameter (8.7-deg radius) from
Geosynchronous Earth Orbit (GEO).

73, Ken N2WWD




-Original Message-
>From: Joe 
>Sent: Sep 15, 2009 12:07 PM
>To: BB 
>Subject: [amsat-bb]  Geosyro orbit.
>
>Hi All,
>
>I have a couple of questions,  How big is the earth from a 
>geosyncronous
>(sp?) orbit.
>
>Like the Moon from Earth is roughly 1/2 a degree.
>
>What is the earth from a geo orbit? anyone know?
>
>Joe WB9SBD
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[amsat-bb] Re: Cubesat launch Sept. 23rd

[Graham Shirville]

Hi Bruce,


BEESat reported to be on 436.000MHz - not coordinated by IARU
ITUpSat has a 100mW 70cm CW telemetry beacon coordinated by IARU on 
437.325MHz
see www.amsat.org.uk/iaru

73

Graham
G3VZV


- Original Message - 
From: "Bruce Robertson" 
To: "AMSAT-BB" 
Sent: Tuesday, September 15, 2009 5:35 PM
Subject: [amsat-bb] Cubesat launch Sept. 23rd


> According to this report
> http://www.hindu.com/2009/09/13/stories/2009091360321100.htm PSLV-C14,
> which will carry cubesats, is to launch on 23rd of Sept.
> UWE 2 (A AX25 and CW downlink on 437.385 MHz)
> SwissCube 1 (A downlink frequency of 437.505MHz)
> BeeSat ( 70cm Transmit power: 0.5 W GMSK at 9600/4800 bits/s)
> ITU-pSat (radio info?)
>
> Bob mentioned KySat is going up pretty soon, too. Does anyone know if
> it will have the capability to be configured as a FM transponder as
> was planned a while back?
>
> 73, Bruce
> VE9QRP
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[amsat-bb] Re: Cubesat launch Sept. 23rd

[Wouter Jan Ubbels]

Hi Bruce,

yes, PSLV-C14 will carry ISIlaunch01, a cluster launch of four 1U CubeSats.
For all frequency info, please refer to

http://www.isispace.nl/index.php?option=com_content&task=view&id=80&Itemid=84

and the websites of the satellite teams.

Integration progress can be followed on:

http://blog.isilaunch.com/

And of course, all help is appreciated in early operations tracking and
assigning the correct TLE's to the different objects as soon as possible!

We will try to keep everyone posted, more info will be posted as it becomes
available.

73 on behalf of the ISIlaunch team,

Wouter Jan Ubbels PE4WJ
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[amsat-bb] Re: Cubesat launch Sept. 23rd

[i8cvs]

Hi Wouter, PE4WJ

What about DELFI - C3 for the promised amateur use ?

73" de

i8CVS Domenico

- Original Message -
From: "Wouter Jan Ubbels" 
To: "amsat...@amsat. Org" 
Sent: Tuesday, September 15, 2009 7:02 PM
Subject: [amsat-bb] Re: Cubesat launch Sept. 23rd


> Hi Bruce,
>
> yes, PSLV-C14 will carry ISIlaunch01, a cluster launch of four 1U
CubeSats.
> For all frequency info, please refer to
>
>
http://www.isispace.nl/index.php?option=com_content&task=view&id=80&Itemid=8
4
>
> and the websites of the satellite teams.
>
> Integration progress can be followed on:
>
> http://blog.isilaunch.com/
>
> And of course, all help is appreciated in early operations tracking and
> assigning the correct TLE's to the different objects as soon as possible!
>
> We will try to keep everyone posted, more info will be posted as it
becomes
> available.
>
> 73 on behalf of the ISIlaunch team,
>
> Wouter Jan Ubbels PE4WJ
> ___
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> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

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[amsat-bb] Re: Cubesat launch Sept. 23rd

[Wouter Jan Ubbels]

Hi Domenico,

Delfi-C3 has been in amateur transponder mode from the end of July 2008 till
mid-October 2008, after which we sadly have had to conclude that the
transponder had failed. We do not know the exact failure cause, but it is a
failure in the receive section of the transponder. Sad but true, it is the
only component to have failed on the satellite so far... :( everything else
is running ok apart from some minor quirks like regular downlink drop outs
which are related to the databus and are not critical. I have only been able
to make a handful QSO's on the transponder myself, would have loved to make
many more!
After this sad conclusion, we have decided to switch the satellite back to
science mode, a mode in which it transmits payload data on 145.870 1200Bd
AX.25 BPSK to at least give it a useful life which will hopefully last for
many more years to come!

73,

Wouter Jan Ubbels PE4WJ


On Tue, Sep 15, 2009 at 7:46 PM, i8cvs  wrote:

> Hi Wouter, PE4WJ
>
> What about DELFI - C3 for the promised amateur use ?
>
> 73" de
>
> i8CVS Domenico
>
> - Original Message -
> From: "Wouter Jan Ubbels" 
> To: "amsat...@amsat. Org" 
> Sent: Tuesday, September 15, 2009 7:02 PM
> Subject: [amsat-bb] Re: Cubesat launch Sept. 23rd
>
>
> > Hi Bruce,
> >
> > yes, PSLV-C14 will carry ISIlaunch01, a cluster launch of four 1U
> CubeSats.
> > For all frequency info, please refer to
> >
> >
>
> http://www.isispace.nl/index.php?option=com_content&task=view&id=80&Itemid=8
> 4
> >
> > and the websites of the satellite teams.
> >
> > Integration progress can be followed on:
> >
> > http://blog.isilaunch.com/
> >
> > And of course, all help is appreciated in early operations tracking and
> > assigning the correct TLE's to the different objects as soon as possible!
> >
> > We will try to keep everyone posted, more info will be posted as it
> becomes
> > available.
> >
> > 73 on behalf of the ISIlaunch team,
> >
> > Wouter Jan Ubbels PE4WJ
> > ___
> > Sent via amsat...@amsat.org. Opinions expressed are those of the author.
> > Not an AMSAT-NA member? Join now to support the amateur satellite
> program!
> > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>
>
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[amsat-bb] dreamer

[Jerry]

   Hi :  I guess you could say I miss AO-10   . RS birds   AO-40

   FO-20  .

 I could go on and on.

  When I see all the cube sats launched and FM birds  I say to 

  Myself why didn,t they pull all the resources together to
launch

  One HEO.

   I guess I will have to keep dreaming that this might happen.

 The Dreamer

   Jerry w0sat

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[amsat-bb] Re: dreamer

[Samudra Haque]

IF dreaming season is now open.. :-)

has any amateur satellite mission been conceived (and implemented)
where the satellite is permitted/designed for in-orbit maneuvering
with other spacecraft ? Simple example: Sat A, flies in formation with
Sat B. Complex example: Sat A, changes orbit to rendezvous with Sat B.
Could be useful to avoid debris and other spacecraft, or could be very
useful in "joining" missions with additional tasks as Mission A Sat A
performs operations on/with Mission B Sat B.

concept: "operations" is flexible term: example: fix other spacecraft.

Since these "cubesats" or "microsats" are often launched in clusters,
I would have thought this should be a common topic by now? Any URLs
that describe the maneuvering tasks in-orbit for any class of amateur
spacecraft, please highlight them for education.

Thanks,

Samudra, N3RDX

On Tue, Sep 15, 2009 at 3:07 PM, Jerry  wrote:
>       Hi :  I guess you could say I miss AO-10   . RS birds   AO-40
>
>               FO-20  .
>
>                 I could go on and on.
>
>              When I see all the cube sats launched and FM birds  I say to
>
>              Myself why didn,t they pull all the resources together to
> launch
>
>              One HEO.
>
>               I guess I will have to keep dreaming that this might happen.
>
>                     The Dreamer
>
>                       Jerry w0sat
>
> ___
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> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>

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[amsat-bb] Re: dreamer

[PE0SAT]

On Tue, September 15, 2009 21:07, Jerry wrote:

> Hi,

Hi Jerry,

> I guess you could say I miss AO-10, RS birds, AO-40, FO-20

> I could go on and on.

> When I see all the cube sats launched and FM birds  I say to
> Myself why didn,t they pull all the resources together to
> launch One HEO.

> I guess I will have to keep dreaming that this might happen.

> The Dreamer

I experience the same dream :))


> Jerry w0sat

73's Jan - PE0SAT

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[amsat-bb] Re: dreamer

[k0vty]

On Tue, 15 Sep 2009 15:19:59 -0400 Samudra Haque
 writes:
> IF dreaming season is now open.. :-)

If I may add to your maneuvering suggestion Samudra,
--
I like to see a selection of deorbiting concepts tried.
This to be done in a manner similar to previous satellites have been
launched from the ISS. 
Maybe one launched every other day while the ISS is over head during a
space walk 
so TLM and tracking beacons are available for info collection.
As long as the LEO concept is in need of de orbiting and not the HEO bird
it
appears at the rate cube sats are being launched deorbiting will get very
serious shortly.

Dreamer

Joe  (K0VTY)
-- 
> has any amateur satellite mission been conceived (and implemented)
> where the satellite is permitted/designed for in-orbit maneuvering
> with other spacecraft ? Simple example: Sat A, flies in formation 
> with
> Sat B. Complex example: Sat A, changes orbit to rendezvous with Sat 
> B.
> Could be useful to avoid debris and other spacecraft, or could be 
> very
> useful in "joining" missions with additional tasks as Mission A Sat 
> A
> performs operations on/with Mission B Sat B.
> 
> concept: "operations" is flexible term: example: fix other 
> spacecraft.
> 
> Since these "cubesats" or "microsats" are often launched in 
> clusters,
> I would have thought this should be a common topic by now? Any URLs
> that describe the maneuvering tasks in-orbit for any class of 
> amateur
> spacecraft, please highlight them for education.
> 
> Thanks,
> 
> Samudra, N3RDX
> 
> On Tue, Sep 15, 2009 at 3:07 PM, Jerry  wrote:
> >   Hi :  I guess you could say I miss AO-10   . RS birds   
> AO-40
> >
> >   FO-20  .
> >
> > I could go on and on.
> >
> >  When I see all the cube sats launched and FM birds  I 
> say to
> >
> >  Myself why didn,t they pull all the resources 
> together to
> > launch
> >
> >  One HEO.
> >
> >   I guess I will have to keep dreaming that this might 
> happen.
> >
> > The Dreamer
> >
> >   Jerry w0sat
> >
> > ___
> > Sent via amsat...@amsat.org. Opinions expressed are those of the 
> author.
> > Not an AMSAT-NA member? Join now to support the amateur satellite 
> program!
> > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
> >
> 
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> author.
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> program!
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[amsat-bb] Re: dreamer

[Vince Fiscus, KB7ADL]

At 02:07 PM 9/15/2009 -0500, "Jerry"  wrote:
>Hi :  I guess you could say I miss AO-10   . RS birds   AO-40
>
>FO-20  .
>
>  I could go on and on.
>
>   When I see all the cube sats launched and FM birds  I say to
>
>   Myself why didn,t they pull all the resources together to
>launch
>
>   One HEO.
>
>I guess I will have to keep dreaming that this might happen.
>
>  The Dreamer
>
>Jerry w0sat



Don't feel bad, I have the same dream.  :-)

My last Satellite contact was on AO-40 with WB6LLO.  I just listen now...
and wait.

KB7ADL

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[amsat-bb] Re: dreamer

[Alan P. Biddle]

Jerry,

A lot of very talented, determined people are working against stiff odds to
actually bring that about.  They share the dream, as well as the solder
burns which come with the territory.

Alan
WA4SCA



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[amsat-bb] Re: dreamer

[JoAnne Maenpaa]

> ... in-orbit maneuvering with other spacecraft ... Sat A, changes 
> orbit to rendezvous with Sat B ...

Two cubesats, BEVO1 (University of Texas) and AggieSat-2 (Texas A and M
University) deployed earlier this summer were the first phase of developing
this type of rendezvous capability:

http://www.nasa.gov/mission_pages/station/science/experiments/DRAGONSat.html
http://www.youtube.com/watch?v=FqM3Wq_ijw8

After deployment the two satellites did not separate from each other.

--
73 de JoAnne K9JKM
k9...@amsat.org 
Editor, AMSAT News Service
Copy Editor, AMSAT Journal



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[amsat-bb] SwissCube Live Tracking website

[Trevor .]

The SwissCube Live Tracking site is at 

http://swisscube-live.ch/ 

73 Trevor M5AKA 
Daily Amateur Radio Email/RSS News: http://www.southgatearc.org/ 





  

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[amsat-bb] Re: dreamer

[Ben Jackson]

Jerry wrote:
>Hi :  I guess you could say I miss AO-10   . RS birds   AO-40
> 
>FO-20  .
> 
>  I could go on and on.
> 
>   When I see all the cube sats launched and FM birds  I say to 
> 
>   Myself why didn,t they pull all the resources together to
> launch
> 
>   One HEO.

Because we'd likely end up with no LEOs and a HEO still on the ground.

~Ben

-- 
Ben Jackson - N1WBV - New Bedford, MA
bbj  innismir.net - http://www.innismir.net/
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[amsat-bb] Re: dreamer

[Bruce Robertson]

Jerry --

I share your nostalgia, and I've never even been able to work a HEO satellite!

 But if you are asking this question in earnest, it has to be said
that even if we amateurs could compell the universities launching
cubesats to do as you ask, the resources would not equal one HEO
launch. Say a cubesat costs $80,000 to launch. If current HEO cost
estimates are correct, and we're looking at over $10,000,000 for that
launch cost, then we would need to harness the wealth of 125 cubesat
teams just for the launch cost. I don't think any university is going
to wait for that.

There is an oft-repeated misapprehension lurking under here, too, and
that is that the wealth going into the cubesat launches is money that
would otherwise be spent on a HEO amateur satellite. Cubesats are (in
large part) university projects aiming to give students access to the
process of designing, launching and controlling a satellite. They are
attractive to granting agencies (and even launch agencies) because of
their eduational potential. To my knowledge, during the design and
launch of previous amateur HEOs, professors did not line up to apply
for grant money to hand over to AMSAT-NA or -DL, as they are now
lining up to apply for money to build cubesats. Contrarywise, I don't
believe many of these cubesats have made any demands at all from the
(hobby) amateur community to defray their costs. (Perhaps this is not
the case in countries where the cubesat represents one of the
country's first forays into space, such as Turkey.)

In short, there is no evidence that cubesat activity is in any way
reducing our opportunities to go to HEO again. Other, currently
overwhelming, factors are doing that all by themselves.

What the cubesat platform has done, though, is offered a regular,
affordable launch opportunity for low LEO. We members of this list
could probably muster enough money to launch our own satellite,
designed here, and controlled by us, if we so wished! (I think at one
point JoAnne tried to start a thread along those lines.) You mention
RS birds: could we deploy a 10m antenna from a 10 cm^3 volume?  Maybe
a spooled-out wire? What kind of propulsion can we make to get from
cubesat LEO to something with a better footprint? In my opinion, if we
really are the descendents of the garage-engineers of OSCAR-1, we
should be buying up pumpkin cubesat spaceframes and posting videos for
each other of the cool things we've achieved in that limited, but not
impossible, space.

Here's some other ideas:

1. CW robot (a la RS) in a PIC. Can you do it in a single atmel
atmega328? At 20 MHz? At 4?
2. PIC code so that the bird turns itself off over unpopulated areas.
(I love my solo passes over the Atlantic when I have VO-52 all to
myself, but I'd be willing to give them up for the greater good :-)
Extra credit: have one chip do both of the above under a operating system
3. Antenna testing: hang a cubesat model up 50' in a tree with some
funky antennas on it. Can you make them have the pattern you (we)
want?
4. Propulsion. How much thrust can we safely get into a cube?
4. This one is completly impossible, but boy it would be nice to have
a U/V transponder on a 10 cm^2 board. We'll have to wait years for
someone to do that, though :-)

We really, honestly, still can have fun. Maybe not the fun that some
of you had back in the day, but there's lots of cool stuff to be
undertaken.

Finally, in that spirit, can I encourage everyone to join in on the
cubesat launches in a few days? Watch the launch, get on internet chat
and eavesdrop on the excited conversation of these young people. Join
the global hunt for the proper keplerian elements for these birds, and
copy what telemetry you can. We almost all of us have the skills and
equipment to be part of a remarkable event. I can't tell you the
thrill of letting these people know their baby is alive and beeping in
space.

73, Bruce
VE9QRP

On Tue, Sep 15, 2009 at 4:07 PM, Jerry  wrote:
>       Hi :  I guess you could say I miss AO-10   . RS birds   AO-40
>
>               FO-20  .
>
>                 I could go on and on.
>
>              When I see all the cube sats launched and FM birds  I say to
>
>              Myself why didn,t they pull all the resources together to
> launch
>
>              One HEO.
>
>               I guess I will have to keep dreaming that this might happen.
>
>                     The Dreamer
>
>                       Jerry w0sat
>
> ___
> Sent via amsat...@amsat.org. Opinions expressed are those of the author.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
>

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[amsat-bb] G5500 Questions

[Randy]

I just finished up the cables for the rotor
And been reading thru the manual .. ( lacking a bit )

It says 5 minutes intermittent service and something
About 15 minutes rest.  I assume then , that it means
5 minutes on , 15 minutes off.  

Doesn't seem like it takes a whole 5 minutes to run the whole
Rotation , but wanted to know if its ok to go from one end of
The rotation to the other without stopping? Wanted to ask if that seems
reasonable?

For setup I ran the azimuth and elevation to CCW to the stop to make sure
It stopped correctly and the meter indicated correctly, then went the other
way to full meter deflection, to the
Stop and adjusted the Full Scale adjustment for full scale.  That's all
there is
To it?  Whats the voltage output adjustments for?

One more thing .. On a side note.. I thought it was cheesey to have "radio
shack" 
Type terminal strips on a 600.00 rotor to connect the rotor cable too ... 
Why not have a couple connectors there? Even my old Wilson WR-500 had a
connector. Lol

I assume even with 2 small yagis on this rotor, I will now have to guy the
mast due to the
Added weight of the rotor on the mast ?
( better safe then sorry LOL )

Thanks everyone .. 

Randy - N2CUA


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[amsat-bb] Re: dreamer

[w7lrd]

Well said!  I believe any and all satellite endeavors can in the long run be 
parlayed into more grandiose efforts.  One thing that has always intrigued me 
is the possibility of a "benign" propulsion system for these LEO's.  Our 
continued support for these university type efforts can possibly come back in 
spades down the road. 

73 Bob W7LRD 





: Tuesday, September 15, 2009 5:45:43 PM GMT -08:00 US/Canada Pacific 
Subject: [amsat-bb] Re: dreamer 

Jerry -- 

I share your nostalgia, and I've never even been able to work a HEO satellite! 

 But if you are asking this question in earnest, it has to be said 
that even if we amateurs could compell the universities launching 
cubesats to do as you ask, the resources would not equal one HEO 
launch. Say a cubesat costs $80,000 to launch. If current HEO cost 
estimates are correct, and we're looking at over $10,000,000 for that 
launch cost, then we would need to harness the wealth of 125 cubesat 
teams just for the launch cost. I don't think any university is going 
to wait for that. 

There is an oft-repeated misapprehension lurking under here, too, and 
that is that the wealth going into the cubesat launches is money that 
would otherwise be spent on a HEO amateur satellite. Cubesats are (in 
large part) university projects aiming to give students access to the 
process of designing, launching and controlling a satellite. They are 
attractive to granting agencies (and even launch agencies) because of 
their eduational potential. To my knowledge, during the design and 
launch of previous amateur HEOs, professors did not line up to apply 
for grant money to hand over to AMSAT-NA or -DL, as they are now 
lining up to apply for money to build cubesats. Contrarywise, I don't 
believe many of these cubesats have made any demands at all from the 
(hobby) amateur community to defray their costs. (Perhaps this is not 
the case in countries where the cubesat represents one of the 
country's first forays into space, such as Turkey.) 

In short, there is no evidence that cubesat activity is in any way 
reducing our opportunities to go to HEO again. Other, currently 
overwhelming, factors are doing that all by themselves. 

What the cubesat platform has done, though, is offered a regular, 
affordable launch opportunity for low LEO. We members of this list 
could probably muster enough money to launch our own satellite, 
designed here, and controlled by us, if we so wished! (I think at one 
point JoAnne tried to start a thread along those lines.) You mention 
RS birds: could we deploy a 10m antenna from a 10 cm^3 volume?  Maybe 
a spooled-out wire? What kind of propulsion can we make to get from 
cubesat LEO to something with a better footprint? In my opinion, if we 
really are the descendents of the garage-engineers of OSCAR-1, we 
should be buying up pumpkin cubesat spaceframes and posting videos for 
each other of the cool things we've achieved in that limited, but not 
impossible, space. 

Here's some other ideas: 

1. CW robot (a la RS) in a PIC. Can you do it in a single atmel 
atmega328? At 20 MHz? At 4? 
2. PIC code so that the bird turns itself off over unpopulated areas. 
(I love my solo passes over the Atlantic when I have VO-52 all to 
myself, but I'd be willing to give them up for the greater good :-) 
Extra credit: have one chip do both of the above under a operating system 
3. Antenna testing: hang a cubesat model up 50' in a tree with some 
funky antennas on it. Can you make them have the pattern you (we) 
want? 
4. Propulsion. How much thrust can we safely get into a cube? 
4. This one is completly impossible, but boy it would be nice to have 
a U/V transponder on a 10 cm^2 board. We'll have to wait years for 
someone to do that, though :-) 

We really, honestly, still can have fun. Maybe not the fun that some 
of you had back in the day, but there's lots of cool stuff to be 
undertaken. 

Finally, in that spirit, can I encourage everyone to join in on the 
cubesat launches in a few days? Watch the launch, get on internet chat 
and eavesdrop on the excited conversation of these young people. Join 
the global hunt for the proper keplerian elements for these birds, and 
copy what telemetry you can. We almost all of us have the skills and 
equipment to be part of a remarkable event. I can't tell you the 
thrill of letting these people know their baby is alive and beeping in 
space. 

73, Bruce 
VE9QRP 

On Tue, Sep 15, 2009 at 4:07 PM, Jerry  wrote: 
>       Hi :  I guess you could say I miss AO-10   . RS birds   AO-40 
> 
>               FO-20  . 
> 
>                 I could go on and on. 
> 
>              When I see all the cube sats launched and FM birds  I say to 
> 
>              Myself why didn,t they pull all the resources together to 
> launch 
> 
>              One HEO. 
> 
>               I guess I will have to keep dreaming that this might happen. 
> 
>                     The Dreamer 
> 
>                       Jerry w0sat 
> 
> _

[amsat-bb] CARE Launch from Wallops - Live Video

[Rich Dailey (Gmail)]

http://sites.wff.nasa.gov/webcast/

Rich, N8UX.

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[amsat-bb] Re: G5500 Questions

[Jim Jerzycke]

I've run mine from end-to-end repeatedly without problems. I would suspect the 
duty cycle is also related to the amount of load (antenna size/weight, and 
wind) on it, so YMMV.
Looking at the schematic shows the "other" two pots on the back panel have the 
same function as the "Full Scale Adj", but instead of driving a meter, they 
send the scaled voltage out to the 8-pin DIN connector on the rear panel, where 
it is normally goes to the IF232 unit for position feedback.
I don't have a problem with the terminal strips on the back. I made 3' 
'pigtails' with spade lugs on them, dressed them neatly into the nylon cable 
clamps, and then put some Molex connectors on them. I have the  mating Molex 
connectors on my rotor cables in the shack, and this allows me to unplug the 
control box and move it around without unscrewing all the terminals.
Total cost about 5 bucks
73, Jim  KQ6EA

--- On Tue, 9/15/09, Randy  wrote:

From: Randy 
Subject: [amsat-bb]  G5500 Questions
To: amsat-bb@amsat.org
Date: Tuesday, September 15, 2009, 5:54 PM

I just finished up the cables for the rotor
And been reading thru the manual .. ( lacking a bit )

It says 5 minutes intermittent service and something
About 15 minutes rest.  I assume then , that it means
5 minutes on , 15 minutes off.  

Doesn't seem like it takes a whole 5 minutes to run the whole
Rotation , but wanted to know if its ok to go from one end of
The rotation to the other without stopping? Wanted to ask if that seems
reasonable?

For setup I ran the azimuth and elevation to CCW to the stop to make sure
It stopped correctly and the meter indicated correctly, then went the other
way to full meter deflection, to the
Stop and adjusted the Full Scale adjustment for full scale.  That's all
there is
To it?  Whats the voltage output adjustments for?

One more thing .. On a side note.. I thought it was cheesey to have "radio
shack" 
Type terminal strips on a 600.00 rotor to connect the rotor cable too ... 
Why not have a couple connectors there? Even my old Wilson WR-500 had a
connector. Lol

I assume even with 2 small yagis on this rotor, I will now have to guy the
mast due to the
Added weight of the rotor on the mast ?
( better safe then sorry LOL )

Thanks everyone .. 

Randy - N2CUA


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