| |
CX2SA > SATDIG 25.02.13 18:58l 833 Lines 26783 Bytes #999 (0) @ WW
BID : AMSATBB861
Read: GUEST
Subj: AMSAT-BB-digest V8 61
Path: IZ3LSV<IW8PGT<CX2SA
Sent: 130225/1757Z @:CX2SA.SAL.URY.SA #:3753 [Salto] FBB7.00e $:AMSATBB861
From: CX2SA@CX2SA.SAL.URY.SA
To : SATDIG@WW
Today's Topics:
1. Re: Mars Flyby 2018 (R Oler)
2. Re: inquiry about homebrew az-el systems (Samudra Haque)
3. Re: inquiry about homebrew az-el systems (Michael)
4. PSLV-C20 Launch (Mineo Wakita)
5. Re: PSLV-C20 Launch (Trevor .)
6. Lift-off of STRaND-1 and other amateur radio CubeSats (Trevor .)
7. Re: PSLV-C20 Launch (Alan)
8. Re: PSLV-C20 Launch (Jim List)
9. Re: PSLV-C20 Launch (GW1FKY@xxx.xxxx
10. packet heard ? STRaND-1? (Nader Omer)
11. proper way? (K4FEG)
12. packet heard ? STRaND-1? (Nader Omer)
13. Re: proper way? (B J)
14. STRaND-1 Live feed from Surrey (Trevor .)
----------------------------------------------------------------------
Message: 1
Date: Sun, 24 Feb 2013 11:11:39 -0600
From: R Oler <orbitjet@xxxxxxx.xxx>
To: <m5aka@xxxxx.xx.xx>, Amsat BB <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Mars Flyby 2018
Message-ID: <BLU176-W19BD98BEEEB44CDC171C36D6F20@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
It is a crewed flight; jeff foust at Newspace Journal has some good
information
Wonder if we could talk them into an amateur payload? A transponder would
be useless...and any comm system would have to be hooked into a large
antenna with some power to be useful to all but a few.
My suggestion would be some sort of data link with say a small (12 inch) or
so telescope...
BTW I am pretty jaded as far as human spaceflight goes; but this is a
tremendous in my view effort and if it happens (even if it does not work) it
will change the human spaceflight condition for the better...they are going
to try and do this for less money then ISS spends in 3 months.
Robert WB5MZO
> Date: Sun, 24 Feb 2013 14:15:28 +0000
> From: m5aka@xxxxx.xx.xx
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Mars Flyby 2018
>
> Saw the item in ANS about the proposed Mars flyby by the Inspirational
Mars Foundation in 2018.
>
> Although lots of sites are implying there will be a human onboard the
Inspirational Mars Foundation press release does not actually state that:
> http://www.spaceref.com/news/viewpr.html?pid=40141
>
> You'd have thought a small automatic uncrewed spacecraft would be a better
bet for a flyby and return given the timescale. Guess we'll find out at the
press conference on Wednesday afternoon.
>
> 73 Trevor M5AKA
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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
------------------------------
Message: 2
Date: Sun, 24 Feb 2013 20:45:23 -0500
From: Samudra Haque <samudra.haque@xxxxx.xxx>
To: Lizeth Norman <normanlizeth@xxxxx.xxx>
Cc: Amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: inquiry about homebrew az-el systems
Message-ID:
<CAJEM474e4s3b_kS6hNWt_ya5=Ysz3XhVh=9MUDkXfaTnNhOcUA@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
I think these old articles are really informative. I had collected them
earlier, and re-read them just now. BTW Does anyone have any pointers to
phase array design tools for satellite antennas as a potential substitute
for multi-element yagi ?
73 de X
On Sat, Feb 23, 2013 at 11:03 PM, Samudra Haque
<samudra.haque@xxxxx.xxx>wrote:
> hi, thanks for addressing this question. And I invite others to
> participate, or get in touch with me for a phone conversation, and discuss
> simple steps that can be taken IMHO within 50-100 USD. I suggest we adopt
> AMSAT friendly tips:
>
> http://www.amsat.org/amsat-new/tools/downloads/iROTOR.pdf (will need
> additional interface to PC, any kind)
>
> (cool idea, but only as concept)
> http://www.amsat.org/amsat-new/echo/Az_El_Pos.pdf
>
> http://dgg.gotdns.com/doc/XOX_rotor.pdf (Semi professional..)
>
> http://ka6puw.tripod.com/azimuth1.html <--- what do you think of this
> style? Looks simple enough.
>
> But I have only done a simple google search here. Any other projects worth
> investigating? Focus on the "mount" only now.
>
> -samudra
>
>
>
>
>
>
> On Sat, Feb 23, 2013 at 10:41 PM, Lizeth Norman
<normanlizeth@xxxxx.xxx>wrote:
>
>> Samudra,
>> This is a good question for a first year engineering student like
>> myself: How does one bring home the best bang for the buck out of an
>> engineering dollar?
>>
>> Feel free to ask around. A few on the list have driven unusual devices
>> to get antennas moved.
>>
>> How does a project get into the hands of people who will actually do
>> it? A one off I can do for you in my basement. Probably with parts
>> from radio shack, a grinder and a few hand tools.. A reproducible
>> project 10 years from now? Hardly likely.
>>
>> I submit to you that irrespective of the metalwork this is a simple
>> project as you propose, however it must be reproducible. With a
>> student copy of SolidWorks, a circular saw, drill and the Arduino IDE
>> it could be prototyped by two people in a weekend. Refining it so that
>> a relatively new ham with a smidgin of technical ability could do it
>> might take a little longer. These days with the internet and cad, the
>> real issue is the tooling. How do you design/layout such that it can
>> be done with snips/file/saw/fill in the blunt instrument here..
>> 73 es have fun..
>>
>> Norm n3ykf
>>
>>
>>
>>
>>
>> On Sat, Feb 23, 2013 at 10:19 PM, Samudra Haque <samudra.haque@xxxxx.xxx>
>> wrote:
>> > I hope it is evident, I am not focusing on the
>> > controller/microcontroller/computer interface/az-el controller/etc. The
>> real
>> > issue is how cheaply can an antenna be mounted on a kingpost somewhere
>> on a
>> > surface, with a view towards the sky, and how conveniently can that
>> mount be
>> > motorized, with a sensor to give feedback to the ground station.
>> > electronics, seem to be, (apologises to EE friends) a dime a dozen,
>> cheaper
>> > if made in hundreds, but the key drawback of any design is the
>> mechanical
>> > and electromechanical (can we use, mechatronics) system that serves as
>> the
>> > actuators. I am not referring to a hand held antenna assembly, but
>> rather
>> > something that we can all use in cold/hot weather and that can be put
>> > together by one / two persons on an average post.
>> >
>> > Comments welcome, I think the future holds bright for amsats and edu
>> based
>> > cubesats.
>> >
>> >
>> > -samudra
>> >
>> >
>> > On Sat, Feb 23, 2013 at 9:50 PM, Lizeth Norman <normanlizeth@xxxxx.xxx>
>> > wrote:
>> >>
>> >> Gus and the group:
>> >> Lots of birds going up in the next year. Success rate not 100% as it's
>> >> rocket science oftentimes on a budget. Hopefully we'll get a few out
>> >> of it.
>> >> The Arduino IDE install supports PPM. The nice thing about that
>> >> platform is that configuration is doable for just about all forms of
>> >> hardware that you might drive with it and scaling can be done in
>> >> software for the various different bits of kit.
>> >>
>> >> I am sure that with the appropriate development environment and having
>> >> the hardware on hand IN a well equipped lab, it should be a weekend
>> >> project to get running.
>> >>
>> >> The hard bit in my opinion is how to mount the antennas to the az/el
>> >> clockwork. Will require a little woodwork/metalwork to finish.
>> >>
>> >> Everyone who does this will have a problem with some phase of it.
>> >> Needs to be simple and repeatable.
>> >>
>> >> Norm n3ykf
>> >> _______________________________________________
>> >> Sent via AMSAT-BB@xxxxx.xxx. 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
>> >
>> >
>>
>
>
------------------------------
Message: 3
Date: Sat, 23 Feb 2013 23:22:04 -0500
From: Michael <Mat_62@xxxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: inquiry about homebrew az-el systems
Message-ID: <5129956C.6000909@xxxxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
A few years back I built the SAEBRETrack system shown here
https://sites.google.com/site/marklhammond/saebrtrack. It's based
around a BASIC stamp. I built the version used to control the OR-360
rotators but those have become very scarce and worth their weight in
gold if you can find them. My point is this though, if you open up an
OR-360 you find a surprisingly small "540" DC motor driving the gear
train and direction is controlled by voltage polarity. Positioning is
by potentiometer feedback. There are probably better ways to do it than
a BASIC stamp these days but the concept of driving DC motors to control
lightweight arrays has crossed my mind a few times as well.
Michael, W4HIJ
On 2/23/2013 9:25 PM, Gus wrote:
> Given the shortage of LEO birds, exactly how much antenna do we need
> to rotate?
>
> Hams operate satellite successfully with hand-held antennas, which
> have low wind-loading and are light in weight.
>
> With R/C servos available producing 6? ft. lb of torque for less than
> 150 bucks, I'm surprised a light weight, portable, DC-operated
> satellite system complete with antennas and AZ/EL rotors hasn't
> materialized before now.
>
> On 02/23/2013 07:59 PM, Samudra Haque wrote:
>> Hi, about two years ago, I started a design for a robotics class
>> project of
>> a AZ-EL rotator controller system, and a hardware package for the
>> mechanism
>> for rotating an antenna in any direction subject to mechanical stops.
>> The
>> system would have been able to handle regular and flip modes. I
>> didn't do
>> anything more than calculations, and moved on to building a classroom
>> instructional robot then.
>>
>> Lately, as I am setting up (K3GWU, the George Washington University
>> Amateur
>> Radio Club and Research Station) I find that the price of az-el systems
>> such as G5500 + Yaesu AZ-EL rotors are expensive, and are not typically
>> available on an affordable basis on Ebay or eham.net etc. Well, of
>> course,
>> expensive is a relative term, for a student hobby organization, it's
>> a lot,
>> and I guess for small ham operators it is also moderately expensive.
>>
>> This may be a frequently asked topic: does any one have experienced with
>> (tested) kit designs for AZ-EL rotors that can be made with parts from
>> current suppliers ? I know there are a number of controller
>> designs, but I
>> am interested to know if there are any options for suppliers of the
>> required gears/motors etc.
>>
>> I have located several large AC motors / DC motors at my university
>> mechanical engineering workshop, but they are not all guaranteed the
>> same
>> specs. I now realize if I do embark on a actual design process with my
>> model/simulation/hardware, it would be nice to build several of these
>> all
>> at once to share the development cost over the production run, and
>> ensure
>> those who want a cheap AZ-EL system can get one. Otherwise the
>> production
>> cost of one heavy duty system is going to be quite high.
>>
>> I hope some of you may have suggestions for me, both (+) and (-) or
>> perhaps
>> (~) in nature. I thought amsat / amateur radio folks have a common
>> need to
>> encourage homebrew activity to keep their brain cells in working
>> condition?
>>
>> I'm opening this question up to the national US audience, and welcome
>> any
>> discussion on the challenges of making the ever-so-important
>> azimuth-elevation rotor. I've studied some of the alternatives: Alliance
>> U100 and Yaesu G-5500. I think we can do better in 2013. But ideally, to
>> allow the wide adoption of AMSAT ground stations, what price point would
>> the system have to be to make it worth building ?
>>
>> 73 de N3RDX
>> George Washington University
>>
>>
>>
>
>
------------------------------
Message: 4
Date: Mon, 25 Feb 2013 20:36:05 +0900
From: "Mineo Wakita" <ei7m-wkt@xxxxxxxxx.xx.xx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] PSLV-C20 Launch
Message-ID: <FED9E29E985F4CBBA313FA2B24864EAD@xxxxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-2022-jp";
reply-type=original
Launch Date: 12:25 UTC, 25 Feb 2013
Launch Site: Satish Dhawan Space Center (Sriharikota, India)
Launch Vehicle: PSLV-C20
Satellite Downlink Mode
--------- ---------------- ------------------------------------------
UniBRITE 145.835 CW
TugSat-1 145.890/2234.400 Photometric observations of bright stars
AAUSat-3 437.450 1200~19200bps (default 2400bps), not AX.25
STRaND-1 437.568 9600bps AX.25
--------- ---------------- ------------------------------------------
AAUSAT3
1 30000U 13010D 13056.53140324 .00000000 00000-0 -11606-4 0 0018
2 30000 98.4714 245.1613 0004579 356.2524 218.6600 14.32690253000011
STRaND-1
1 44871U 58056A 13056.56026665 .00000000 00000-0 +10729-3 0 330
2 44871 98.6073 245.8068 0005347 261.8502 98.1779 14.33079817200821
Live webcast:
http://www.isro.org/
http://webcast.gov.in/live/
http://www.ndtv.com/video/live/channel/ndtv24x7
More information:
http://www.ne.jp/asahi/hamradio/je9pel/pslvlnch.htm
JE9PEL, Mineo Wakita
------------------------------
Message: 5
Date: Mon, 25 Feb 2013 12:31:05 +0000 (GMT)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
To: amsat-bb@xxxxx.xxxx Mineo Wakita <ei7m-wkt@xxxxxxxxx.xx.xx>
Subject: [amsat-bb] Re: PSLV-C20 Launch
Message-ID:
<1361795465.70342.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
ISRO now say - PSLV C20 / SARAL Mission is slated for blast off at 6.01 PM IST
Join LIVE Webcast by ISRO ?
http://www.isro.org/scripts/livewebcast-c20.aspx
STRaND-1 info page http://amsat-uk.org/satellites/strand-1/
73 Trevor M5AKA
--- On Mon, 25/2/13, Mineo Wakita <ei7m-wkt@xxxxxxxxx.xx.xx> wrote:
> From: Mineo Wakita <ei7m-wkt@xxxxxxxxx.xx.xx>
> Subject: [amsat-bb] PSLV-C20 Launch
> To: amsat-bb@xxxxx.xxx
> Date: Monday, 25 February, 2013, 11:36
> Launch Date: 12:25 UTC, 25 Feb 2013
> Launch Site: Satish Dhawan Space Center (Sriharikota,
> India)
> Launch Vehicle: PSLV-C20
>
> Satellite???Downlink? ? ?
> ? ???Mode
> ---------???----------------???------------------------------------------
> UniBRITE? ? 145.835? ? ? ?
> ? ? CW
> TugSat-1? ?
> 145.890/2234.400???Photometric observations
> of bright stars
> AAUSat-3? ? 437.450? ? ? ?
> ? ? 1200~19200bps (default 2400bps), not AX.25
> STRaND-1? ? 437.568? ? ? ?
> ? ? 9600bps AX.25
> ---------???----------------???------------------------------------------
>
> AAUSAT3
> 1 30000U 13010D???13056.53140324?
> .00000000? 00000-0 -11606-4 0? 0018
> 2 30000? 98.4714 245.1613 0004579 356.2524 218.6600
> 14.32690253000011
>
> STRaND-1
> 1 44871U 58056A???13056.56026665?
> .00000000? 00000-0 +10729-3 0???330
> 2 44871? 98.6073 245.8068 0005347 261.8502?
> 98.1779 14.33079817200821
>
> Live webcast:
> http://www.isro.org/
> http://webcast.gov.in/live/
> http://www.ndtv.com/video/live/channel/ndtv24x7
>
> More information:
> http://www.ne.jp/asahi/hamradio/je9pel/pslvlnch.htm
>
> JE9PEL, Mineo Wakita
>
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx.
> 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
>
------------------------------
Message: 6
Date: Mon, 25 Feb 2013 12:58:51 +0000 (GMT)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Lift-off of STRaND-1 and other amateur radio
CubeSats
Message-ID:
<1361797131.58661.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
STRaND-1 now deployed - http://www.amsat-uk.org/?p=13300
Yahoo report on two of the other Cubesats http://www.amsat-uk.org/?p=13274
73 Trevor M5AKA
------------------------------
Message: 7
Date: Mon, 25 Feb 2013 07:00:40 -0600
From: Alan <wa4sca@xxxxx.xxx>
To: "'Mineo Wakita'" <ei7m-wkt@xxxxxxxxx.xx.xx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: PSLV-C20 Launch
Message-ID: <E8339D9260374A8791D881DEAC00D2E6@xxxxxx>
Content-Type: text/plain; charset="us-ascii"
ISRO just announced the launch was completed successfully.
Alan
WA4SCA
-----Original Message-----
From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
Behalf Of Mineo Wakita
Sent: Monday, February 25, 2013 5:36 AM
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] PSLV-C20 Launch
Launch Date: 12:25 UTC, 25 Feb 2013
Launch Site: Satish Dhawan Space Center (Sriharikota, India)
Launch Vehicle: PSLV-C20
Satellite Downlink Mode
--------- ---------------- ------------------------------------------
UniBRITE 145.835 CW
TugSat-1 145.890/2234.400 Photometric observations of bright stars
AAUSat-3 437.450 1200~19200bps (default 2400bps), not AX.25
STRaND-1 437.568 9600bps AX.25
--------- ---------------- ------------------------------------------
AAUSAT3
1 30000U 13010D 13056.53140324 .00000000 00000-0 -11606-4 0 0018
2 30000 98.4714 245.1613 0004579 356.2524 218.6600 14.32690253000011
STRaND-1
1 44871U 58056A 13056.56026665 .00000000 00000-0 +10729-3 0 330
2 44871 98.6073 245.8068 0005347 261.8502 98.1779 14.33079817200821
Live webcast:
http://www.isro.org/
http://webcast.gov.in/live/
http://www.ndtv.com/video/live/channel/ndtv24x7
More information:
http://www.ne.jp/asahi/hamradio/je9pel/pslvlnch.htm
JE9PEL, Mineo Wakita
_______________________________________________
Sent via AMSAT-BB@xxxxx.xxx. 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
------------------------------
Message: 8
Date: Mon, 25 Feb 2013 13:12:59 -0000
From: "Jim List" <jimlist@xxxxxx.xx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: PSLV-C20 Launch
Message-ID: <007501ce1359$d5e82120$81b86360$@xx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
Hi Folks
Just been watching the live launch feed from India. Looks like all the
spacecraft were successfully separated into the expected orbit.
Congrats to the PSLV team! Now when will they start transmitting???
73s
Jim G3WGM
> -----Original Message-----
> From: amsat-bb-bounces@xxxxx.xxx [mailto:amsat-bb-bounces@xxxxx.xxxx On
> Behalf Of Trevor .
> Sent: 25 February 2013 12:31
> To: amsat-bb@xxxxx.xxxx Mineo Wakita
> Subject: [amsat-bb] Re: PSLV-C20 Launch
>
> ISRO now say - PSLV C20 / SARAL Mission is slated for blast off at 6.01
> PM IST
>
> Join LIVE Webcast by ISRO ?
> http://www.isro.org/scripts/livewebcast-c20.aspx
>
> STRaND-1 info page http://amsat-uk.org/satellites/strand-1/
>
> 73 Trevor M5AKA
>
> --- On Mon, 25/2/13, Mineo Wakita <ei7m-wkt@xxxxxxxxx.xx.xx> wrote:
>
> > From: Mineo Wakita <ei7m-wkt@xxxxxxxxx.xx.xx>
> > Subject: [amsat-bb] PSLV-C20 Launch
> > To: amsat-bb@xxxxx.xxx
> > Date: Monday, 25 February, 2013, 11:36 Launch Date: 12:25 UTC, 25 Feb
> > 2013 Launch Site: Satish Dhawan Space Center (Sriharikota,
> > India)
> > Launch Vehicle: PSLV-C20
> >
> > Satellite???Downlink
> > ? ???Mode
> > ---------???----------------
> > ------------------------------------------
> > UniBRITE? ? 145.835
> > ? ? CW
> > TugSat-1
> > 145.890/2234.400???Photometric observations of bright stars
> > AAUSat-3? ? 437.450
> > ? ? 1200~19200bps (default 2400bps), not AX.25
> > STRaND-1? ? 437.568
> > ? ? 9600bps AX.25
> > ---------???----------------
> > ------------------------------------------
> >
> > AAUSAT3
> > 1 30000U 13010D???13056.53140324
> > .00000000? 00000-0 -11606-4 0? 0018
> > 2 30000? 98.4714 245.1613 0004579 356.2524 218.6600
> > 14.32690253000011
> >
> > STRaND-1
> > 1 44871U 58056A???13056.56026665
> > .00000000? 00000-0 +10729-3 0???330
> > 2 44871? 98.6073 245.8068 0005347 261.8502
> > 98.1779 14.33079817200821
> >
> > Live webcast:
> > http://www.isro.org/
> > http://webcast.gov.in/live/
> > http://www.ndtv.com/video/live/channel/ndtv24x7
> >
> > More information:
> > http://www.ne.jp/asahi/hamradio/je9pel/pslvlnch.htm
> >
> > JE9PEL, Mineo Wakita
> >
> >
> > _______________________________________________
> > Sent via AMSAT-BB@xxxxx.xxx.
> > 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
> >
>
> _______________________________________________
> Sent via AMSAT-BB@xxxxx.xxx. 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
------------------------------
Message: 9
Date: Mon, 25 Feb 2013 09:00:14 -0500 (EST)
From: GW1FKY@xxx.xxx
To: jimlist@xxxxxx.xx.xxxx amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: PSLV-C20 Launch
Message-ID: <12315.46646179.3e5cc86d@xxx.xxx>
Content-Type: text/plain; charset="US-ASCII"
Hi Jim,
Yes a very successful and smooth lift off to which I add my
congratulations.
Some ball part times in seconds that I noted on the release of the
satellites after lift off.
First satellite released approx 1095 secs, - second 1170 secs,- third 1260
secs - fourth 1274 secs and finally
Strand-1 at 1300 seconds after lift off. the action took place at height
780km.
Based upon the initial posted keps on BBS the initial predictions for my
QTH in Wales ( UK) give me
pass times 1718 -1730 GMT and elevation 17 degrees. - The next is a
higher pass 1857 -1911 GMT elevation 74 degrees.
These are only approximate and will depend on any issue of corrections to
the launch time and tracking.
Wish all lots of good luck especially with Strand-1
Ken Eaton
GW1FKY
------------------------------
Message: 10
Date: Mon, 25 Feb 2013 08:31:19 -0800 (PST)
From: Nader Omer <st2nh@xxxxx.xxx>
To: amsat bb bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] packet heard ? STRaND-1?
Message-ID:
<1361809879.88397.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
15:55? many packets ( seen ) on waterfall - looks like 9.6? STRaND-1 ?!!!
More info later !
Congratulation to all
Nader Omer
st2nh
------------------------------
Message: 11
Date: Mon, 25 Feb 2013 10:33:02 -0600
From: K4FEG <K4FEG@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] proper way?
Message-ID: <512B923E.1070306@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
/*A question for all of the wizards out there!!*//*
*/
/*WHAT IS THE ACCEPTED METHOD FOR DETERMINING THE DISTANCES BETWEEN 2
STATIONS ON THE SATELLITES?*/
I am curious as to what is the accepted "/*gold standard*/"?
There are several calculators and most are somewhat in agreement but
some are not.
I just recently found out, myself, that the grid square system is broken
down to even smaller units than I imagined. it appears that the
divisions continue in the same 2 to 1 ratio and is therefore variable in
dimension based on you location on the planet./(closer to the equator
the larger the grid further north or south of the equator the smaller
the grid)/.
It seems that my exact location can be found by entering
/*EM55aj84ta*//in the satellite mode on the APRS.fi website, you can
actually see my satellite antennas on the back deck of my house with
those coordinates! (actually my "old antennas")
/One additional question for the learned subscribers of this bulletin board!
Is there a distance calculator that can accept up to 10 Alpha/Numeric
qualifiers for ultra accurate distance calculations? Or does anyone have
an idea how I could create one using EXCEL spreadsheet with embedded
formulas?
Thank You all
Frank K4FEG EM55aj84ta
Also I have some forms I have created for multiple contacts on the
satellites, these are EXCEL based forms, one is a "Log/Label" it fits on
a standard Avery 2x4 shipping label and is an embedded EXCEL table that
will let you list up to 7 contacts on a Mini Log on the back of your QSL
card, works great with a "rover" station in different grid squares, I'd
be happy to share it with any one that wants the file!
73
feg
------------------------------
Message: 12
Date: Mon, 25 Feb 2013 08:37:36 -0800 (PST)
From: Nader Omer <st2nh@xxxxx.xxx>
To: amsat bb bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] packet heard ? STRaND-1?
Message-ID:
<1361810256.99293.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
15:55? many packets ( seen ) on waterfall - looks like 9.6? STRaND-1 ?!!!
More info later ! ! I large audio file to revise :)
Congratulation to all
Nader Omer
st2nh
------------------------------
Message: 13
Date: Mon, 25 Feb 2013 17:22:18 +0000
From: B J <va6bmj@xxxxx.xxx>
To: K4FEG <K4FEG@xxxxx.xxx>
Cc: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: proper way?
Message-ID:
<CAP7QzkNrwEEsmRWsZDjhkY66cEgh9kGap18LdJLeqPc7jCbxxQ@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
On 2/25/13, K4FEG <K4FEG@xxxxx.xxx> wrote:
> /*A question for all of the wizards out there!!*//*
> */
> /*WHAT IS THE ACCEPTED METHOD FOR DETERMINING THE DISTANCES BETWEEN 2
> STATIONS ON THE SATELLITES?*/
>
Two methods I've used are:
http://www.chris.org/cgi-bin/finddis
http://f6fvy.free.fr/qthLocator/fullScreen.php
I have a preference for the latter because it can determine distances
to fractions of a metre.
73s
Bernhard VA6BMJ @ DO33FL
<snip>
------------------------------
Message: 14
Date: Mon, 25 Feb 2013 17:54:40 +0000 (GMT)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] STRaND-1 Live feed from Surrey
Message-ID:
<1361814880.53933.YahooMailClassic@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
Nothing heard in UK on last pass.
Surrey tweet possibility the satellite OBC reset and went into it's 45min
quite time again. Going through scenarios and debugging.
Expected next pass soon in next 90mins. Keep trying if possible!! Live feed
from our ground station #STRaND1
Live video feed from Surrey is at
http://www.youtube.com/watch?v=WrWCQ9506B8&feature=plcp
---
Keep listening to 437.568 MHz +/- Doppler.
Keps at http://amsat-uk.org/satellites/strand-1/strand-1-telemetry/
Has anyone heard the other sats that were deployed ?
http://www.amsat-uk.org/?p=12180
73 Trevor M5AKA
------------------------------
_______________________________________________
Sent via amsat-bb@xxxxx.xxx. Opinions expressed are those of the author.
Not an AMSAT member? Join now to support the amateur satellite program!
http://amsat.org/mailman/listinfo/amsat-bb
End of AMSAT-BB Digest, Vol 8, Issue 61
***************************************
Read previous mail | Read next mail
| |
