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CX2SA > SATDIG 30.01.17 10:21l 919 Lines 33314 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.SAL.URY.SOAM
To : SATDIG@WW
Today's Topics:
1. Re: Satellites and small yagis (Mac A. Cody)
2. Re: Re-entry predictions for BY70-1 (Mac A. Cody)
3. NJ7H/VE7/VE8 Antenna Cables Repaired (John Papay)
4. Re: Satellites and small yagis (Ted)
5. Re: NJ7H/VE7/VE8 Antenna Cables Repaired (Ken Alexander)
6. Re: Re-entry predictions for BY70-1 (Ken Alexander)
7. Re: Re-entry predictions for BY70-1 (Scott)
8. Re: Re-entry predictions for BY70-1 (Ken Alexander)
9. Re: NJ7H/VE7/VE8 Antenna Cables Repaired (Clayton W5PFG)
10. Re: THANKS Re: Where did the TLEs go for BY70-1? (Mac A. Cody)
11. Re: interested in India's Rocket Provider Launch by PSLV
rocket. (Nitin Muttin)
----------------------------------------------------------------------
Message: 1
Date: Sun, 29 Jan 2017 16:45:15 -0600
From: "Mac A. Cody" <maccody@xxx.xxx>
To: John Geiger <af5cc2@xxxxx.xxx>, "A. Kevin Arber"
<kevin.w3dad@xxxxx.xxx>, AMSAT BB <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Satellites and small yagis
Message-ID: <f94d2646-7732-2f12-4fd7-b87ec7960b11@xxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
John,
Perhaps something like the mount used here might work:
http://www.waterlog.com/productsdetail.php?GOES-Satellite-Antenna-H-223-G-10
Of course, it would all be mounted on top of an azimuth rotator.
The web page "LEO Azimuth Tracking" (http://aprs.org/LEO-tracking.html)
provides a lot of insight on the issue.
73,
Mac / AE5PH
On 01/29/2017 01:31 PM, John Geiger wrote:
> Thanks for all of the feedback on small yagis and the satellites. There is
> no way I can angle it up, so it will be horizontal. I have seen people
> talking about angling up their yagis, how do you do that. It does seem
> possible on a vertical mast, the only way I can see to do it would be if it
> was on a horizontal crossboom.
>
> 73 John AF5CC
>
> On Sun, Jan 29, 2017 at 5:56 AM, A. Kevin Arber <kevin.w3dad@xxxxx.xxx>
> wrote:
>
>> John,
>> It will work. I completed VUCC last year using a Arrow mounted about 20
>> degrees up in elevation on a AZ only rotor. I used SatPC 32 to control the
>> antenna AZ automatically. Very convenient that way.
>> Good Luck & 73,
>> Kevin W3DAD
>>
>> On Sat, Jan 28, 2017 at 10:35 PM, John Geiger <af5cc2@xxxxx.xxx> wrote:
>>
>>> After having been off the satellites for a while due to life stuff, I am
>>> almost ready to get back on again, I hope. I have a little space on the
>>> mast under my miniquad where I can mount a small dualband end mounted
>>> yagi. I have been looking at the Jetstream 2m/70cm since it is cheapest
>>> and should fit there fine. It has 3 elements on 2m and 5 elements on 70cm.
>>> Will that good enough on the satellites? I have used a Cushcraft 5/5
>>> dualband yagi before with good results.
>>>
>>> I hope in another year or so to have the parent's estate finally settled
>>> and money for a real satellite station again, but am hoping this will do
>>> in
>>> the meantime. Anyone else tried a yagi this size?
>>>
>>> 73 John AF5CC
>>> _______________________________________________
>>> 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
>
------------------------------
Message: 2
Date: Sun, 29 Jan 2017 16:51:32 -0600
From: "Mac A. Cody" <maccody@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Re-entry predictions for BY70-1
Message-ID: <6bba8f0b-7cef-c3af-ced6-59a5d2f7eeca@xxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
Todd and Joe,
Given that BY70-1 is a 2U cubesat measuring 10x10x20cm and weighing
only a few kilograms (details here:
https://amsat-uk.org/2016/12/27/by70-1-fm-transponder-satellite/),
it will completely burn up upon reentry. When and where it will
burn up, of course, depends on the orbital dynamics, atmospheric
conditions (the sun's radiation affects the height of the top of the
atmosphere), and the satellite cross-section. The eventual demise may
be over one of the oceans or a cloudy region, with no one present or
able to witness it.
Since BY70-1 is reported to have 3-axis stabilization, we may be
able to enjoy its use right up to its fiery end. I have been trying
to work BY70-1 as much as my other responsibilities will allow. I
encourage all to do the same.
73,
Mac / AE5PH
On 01/29/2017 10:07 AM, Todd Deckard wrote:
> Greetings Joe!
>
> space-track.org lists the decay epoch as 2017-02-22 0:00:00 -- note this
is not strictly the re-entry time but perhaps gives us an approximate window?
>
> I do not understand the material very well. It appears for large objects
they will calculate a time-and-impact prediction as things become more
certain but perhaps poor Bayi-Kepu-Weixing-1 may not rate as it doesn't pose
a hazard.
>
> I don't even know if it would be visible during re-entry given the speed?
>
>> When will we have a closer idea of when it may re-enter?
>>
>> It would be neat to try to catch it on video.
>>
>> Joe WB9SBD
> _______________________________________________
> 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: 3
Date: Sun, 29 Jan 2017 18:44:20 -0500
From: John Papay <john@xxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] NJ7H/VE7/VE8 Antenna Cables Repaired
Message-ID: <20170129234436.C52149319@xxxxxxxxxx.xxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Many have been working NJ7H/VE8 and /VE7 as
he travels through rare grids in the Northwest
Territories and other Provinces. Unfortunately
he started having problems with his antenna cables
and that caused him to start using his whip on the
car for transmit and limiting operations to FO-29
passes.
Today the problems were fixed, if only temporarily,
all due to the help of a Canadian Ham who is not a
satellite operator. Tim Repas, VE7XIX, who lives
in Taylor BC, near Fort St. John met up with Gabe
earlier today and helped him get his cables working
again. This is yet another story of hams helping
other hams they have never met before. And the story
probably won't find its way into QST magazine either.
So I would encourage all of us who have been working
Gabe and those who just might be readers on the board,
to send an email of appreciation to Tim at his QRZ
address. It just might make his day; he certainly
helped make ours!
73,
John K8YSE
---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
------------------------------
Message: 4
Date: Sun, 29 Jan 2017 15:50:12 -0800
From: "Ted" <k7trkradio@xxxxxxx.xxx>
To: "'John Geiger'" <af5cc2@xxxxx.xxx>, "'A. Kevin Arber'"
<kevin.w3dad@xxxxx.xxx>, "'AMSAT BB'" <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Satellites and small yagis
Message-ID: <004201d27a8a$6f3f7170$4dbe5450$@xxxxxxx.xxx>
Content-Type: text/plain; charset="us-ascii"
John, sending you my Elk setup via direct email. It is an easy solution
73, Ted
K7TRK
-----Original Message-----
From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of John Geiger
Sent: Sunday, January 29, 2017 11:31 AM
To: A. Kevin Arber; AMSAT BB
Subject: Re: [amsat-bb] Satellites and small yagis
Thanks for all of the feedback on small yagis and the satellites. There is
no way I can angle it up, so it will be horizontal. I have seen people
talking about angling up their yagis, how do you do that. It does seem
possible on a vertical mast, the only way I can see to do it would be if it
was on a horizontal crossboom.
73 John AF5CC
On Sun, Jan 29, 2017 at 5:56 AM, A. Kevin Arber <kevin.w3dad@xxxxx.xxx>
wrote:
> John,
> It will work. I completed VUCC last year using a Arrow mounted about
> 20 degrees up in elevation on a AZ only rotor. I used SatPC 32 to
> control the antenna AZ automatically. Very convenient that way.
> Good Luck & 73,
> Kevin W3DAD
>
> On Sat, Jan 28, 2017 at 10:35 PM, John Geiger <af5cc2@xxxxx.xxx> wrote:
>
>> After having been off the satellites for a while due to life stuff, I
>> am almost ready to get back on again, I hope. I have a little space
>> on the mast under my miniquad where I can mount a small dualband end
>> mounted yagi. I have been looking at the Jetstream 2m/70cm since it
>> is cheapest and should fit there fine. It has 3 elements on 2m and 5
elements on 70cm.
>> Will that good enough on the satellites? I have used a Cushcraft 5/5
>> dualband yagi before with good results.
>>
>> I hope in another year or so to have the parent's estate finally
>> settled and money for a real satellite station again, but am hoping
>> this will do in the meantime. Anyone else tried a yagi this size?
>>
>> 73 John AF5CC
>> _______________________________________________
>> 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
------------------------------
Message: 5
Date: Sun, 29 Jan 2017 19:21:15 -0500
From: Ken Alexander <k.alexander@xxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] NJ7H/VE7/VE8 Antenna Cables Repaired
Message-ID: <7214917d-1c04-e160-774f-92bc098337fd@xxxxxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
Done!
On 2017-01-29 6:44 PM, John Papay wrote:
> Many have been working NJ7H/VE8 and /VE7 as
> he travels through rare grids in the Northwest
> Territories and other Provinces. Unfortunately
> he started having problems with his antenna cables
> and that caused him to start using his whip on the
> car for transmit and limiting operations to FO-29
> passes.
>
> Today the problems were fixed, if only temporarily,
> all due to the help of a Canadian Ham who is not a
> satellite operator. Tim Repas, VE7XIX, who lives
> in Taylor BC, near Fort St. John met up with Gabe
> earlier today and helped him get his cables working
> again. This is yet another story of hams helping
> other hams they have never met before. And the story
> probably won't find its way into QST magazine either.
>
> So I would encourage all of us who have been working
> Gabe and those who just might be readers on the board,
> to send an email of appreciation to Tim at his QRZ
> address. It just might make his day; he certainly
> helped make ours!
>
> 73,
> John K8YSE
>
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
> _______________________________________________
> 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: 6
Date: Sun, 29 Jan 2017 19:23:05 -0500
From: Ken Alexander <k.alexander@xxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Re-entry predictions for BY70-1
Message-ID: <b49312be-a1eb-9b33-c601-eddb0468ada7@xxxxxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
A unique meteor scatter opportunity!
73,
Ken
VE3HLS
On 2017-01-29 5:51 PM, Mac A. Cody wrote:
> Todd and Joe,
>
> Given that BY70-1 is a 2U cubesat measuring 10x10x20cm and weighing
> only a few kilograms (details here:
> https://amsat-uk.org/2016/12/27/by70-1-fm-transponder-satellite/),
> it will completely burn up upon reentry. When and where it will
> burn up, of course, depends on the orbital dynamics, atmospheric
> conditions (the sun's radiation affects the height of the top of the
> atmosphere), and the satellite cross-section. The eventual demise may
> be over one of the oceans or a cloudy region, with no one present or
> able to witness it.
>
> Since BY70-1 is reported to have 3-axis stabilization, we may be
> able to enjoy its use right up to its fiery end. I have been trying
> to work BY70-1 as much as my other responsibilities will allow. I
> encourage all to do the same.
>
> 73,
>
> Mac / AE5PH
>
> On 01/29/2017 10:07 AM, Todd Deckard wrote:
>> Greetings Joe!
>>
>> space-track.org lists the decay epoch as 2017-02-22 0:00:00 -- note
>> this is not strictly the re-entry time but perhaps gives us an
>> approximate window?
>>
>> I do not understand the material very well. It appears for large
>> objects they will calculate a time-and-impact prediction as things
>> become more certain but perhaps poor Bayi-Kepu-Weixing-1 may not rate
>> as it doesn't pose a hazard.
>>
>> I don't even know if it would be visible during re-entry given the
>> speed?
>>
>>> When will we have a closer idea of when it may re-enter?
>>>
>>> It would be neat to try to catch it on video.
>>>
>>> Joe WB9SBD
>> _______________________________________________
>> 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
>
------------------------------
Message: 7
Date: Sun, 29 Jan 2017 19:35:29 -0500
From: "Scott" <scott23192@xxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] Re-entry predictions for BY70-1
Message-ID: <84F375248E504784B2FC2A4785084AF7@xxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=response
So, if you happen to be on a border between two grid squares & you make a
satellite contact that becomes a meteor scatter contact, do you just sit
back and watch your logging program explode?
-Scott, K4KDR
==========================================================
-----Original Message-----
From: Ken Alexander
Sent: Sunday, January 29, 2017 7:23 PM
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Re-entry predictions for BY70-1
A unique meteor scatter opportunity!
73,
Ken
VE3HLS
On 2017-01-29 5:51 PM, Mac A. Cody wrote:
> Todd and Joe,
>
> Given that BY70-1 is a 2U cubesat measuring 10x10x20cm and weighing
> only a few kilograms (details here:
> https://amsat-uk.org/2016/12/27/by70-1-fm-transponder-satellite/),
> it will completely burn up upon reentry. When and where it will
> burn up, of course, depends on the orbital dynamics, atmospheric
> conditions (the sun's radiation affects the height of the top of the
> atmosphere), and the satellite cross-section. The eventual demise may
> be over one of the oceans or a cloudy region, with no one present or
> able to witness it.
>
> Since BY70-1 is reported to have 3-axis stabilization, we may be
> able to enjoy its use right up to its fiery end. I have been trying
> to work BY70-1 as much as my other responsibilities will allow. I
> encourage all to do the same.
>
> 73,
>
> Mac / AE5PH
>
> On 01/29/2017 10:07 AM, Todd Deckard wrote:
>> Greetings Joe!
>>
>> space-track.org lists the decay epoch as 2017-02-22 0:00:00 -- note this
>> is not strictly the re-entry time but perhaps gives us an approximate
>> window?
>>
>> I do not understand the material very well. It appears for large objects
>> they will calculate a time-and-impact prediction as things become more
>> certain but perhaps poor Bayi-Kepu-Weixing-1 may not rate as it doesn't
>> pose a hazard.
>>
>> I don't even know if it would be visible during re-entry given the speed?
>>
>>> When will we have a closer idea of when it may re-enter?
>>>
>>> It would be neat to try to catch it on video.
>>>
>>> Joe WB9SBD
------------------------------
Message: 8
Date: Sun, 29 Jan 2017 19:43:27 -0500
From: Ken Alexander <k.alexander@xxxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] Re-entry predictions for BY70-1
Message-ID: <4ade25fb-9ef1-9039-3855-07bc27e1a516@xxxxxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
Only Mr. Spock could answer that!
73,
Ken
VE3HLS
On 2017-01-29 7:35 PM, Scott wrote:
> So, if you happen to be on a border between two grid squares & you
> make a satellite contact that becomes a meteor scatter contact, do you
> just sit back and watch your logging program explode?
>
> -Scott, K4KDR
>
> ==========================================================
>
> -----Original Message----- From: Ken Alexander
> Sent: Sunday, January 29, 2017 7:23 PM
> To: amsat-bb@xxxxx.xxx
> Subject: Re: [amsat-bb] Re-entry predictions for BY70-1
>
> A unique meteor scatter opportunity!
>
> 73,
>
> Ken
> VE3HLS
>
>
> On 2017-01-29 5:51 PM, Mac A. Cody wrote:
>> Todd and Joe,
>>
>> Given that BY70-1 is a 2U cubesat measuring 10x10x20cm and weighing
>> only a few kilograms (details here:
>> https://amsat-uk.org/2016/12/27/by70-1-fm-transponder-satellite/),
>> it will completely burn up upon reentry. When and where it will
>> burn up, of course, depends on the orbital dynamics, atmospheric
>> conditions (the sun's radiation affects the height of the top of the
>> atmosphere), and the satellite cross-section. The eventual demise may
>> be over one of the oceans or a cloudy region, with no one present or
>> able to witness it.
>>
>> Since BY70-1 is reported to have 3-axis stabilization, we may be
>> able to enjoy its use right up to its fiery end. I have been trying
>> to work BY70-1 as much as my other responsibilities will allow. I
>> encourage all to do the same.
>>
>> 73,
>>
>> Mac / AE5PH
>>
>> On 01/29/2017 10:07 AM, Todd Deckard wrote:
>>> Greetings Joe!
>>>
>>> space-track.org lists the decay epoch as 2017-02-22 0:00:00 -- note
>>> this is not strictly the re-entry time but perhaps gives us an
>>> approximate window?
>>>
>>> I do not understand the material very well. It appears for large
>>> objects they will calculate a time-and-impact prediction as things
>>> become more certain but perhaps poor Bayi-Kepu-Weixing-1 may not
>>> rate as it doesn't pose a hazard.
>>>
>>> I don't even know if it would be visible during re-entry given the
>>> speed?
>>>
>>>> When will we have a closer idea of when it may re-enter?
>>>>
>>>> It would be neat to try to catch it on video.
>>>>
>>>> Joe WB9SBD
>
> _______________________________________________
> 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: 9
Date: Sun, 29 Jan 2017 20:44:27 -0600
From: Clayton W5PFG <w5pfg@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] NJ7H/VE7/VE8 Antenna Cables Repaired
Message-ID: <e3d50e03-5149-c249-f233-29bdbb1248fc@xxxxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
Tim may not be active presently, but many of us worked him with his
previous callsign VE5SAT and his US callsign AC2GK. It worked out well
that Tim was able to help a current satellite operator.
Good job on all.
73
Clayton
W5PFG
On 1/29/2017 17:44, John Papay wrote:
> Many have been working NJ7H/VE8 and /VE7 as
> he travels through rare grids in the Northwest
> Territories and other Provinces. Unfortunately
> he started having problems with his antenna cables
> and that caused him to start using his whip on the
> car for transmit and limiting operations to FO-29
> passes.
>
> Today the problems were fixed, if only temporarily,
> all due to the help of a Canadian Ham who is not a
> satellite operator. Tim Repas, VE7XIX, who lives
> in Taylor BC, near Fort St. John met up with Gabe
> earlier today and helped him get his cables working
> again. This is yet another story of hams helping
> other hams they have never met before. And the story
> probably won't find its way into QST magazine either.
>
> So I would encourage all of us who have been working
> Gabe and those who just might be readers on the board,
> to send an email of appreciation to Tim at his QRZ
> address. It just might make his day; he certainly
> helped make ours!
>
> 73,
> John K8YSE
>
>
> ---
> This email has been checked for viruses by Avast antivirus software.
> https://www.avast.com/antivirus
>
> _______________________________________________
> 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: 10
Date: Sun, 29 Jan 2017 23:43:04 -0600
From: "Mac A. Cody" <maccody@xxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: Re: [amsat-bb] THANKS Re: Where did the TLEs go for BY70-1?
Message-ID: <84a9c9c7-85f4-c847-fbfe-31df05b925f4@xxx.xxx>
Content-Type: text/plain; charset=windows-1252; format=flowed
I worked BY70-1 during the 0439 UTC pass this evening using the TLEs
provided through AMSAT.org. I had a successful QSO with W5ACM in
EL29 (I'm in EM12). It became obvious, though, that BY70-1 arrived
sooner than the TLEs indicated. It was very difficult to maintain
proper aiming and Doppler shift correction enable proper communication
with BY70-1 during the times around TCA.
For those interested, I sent the email below to Dr. Kelso at
Celestrak.com. Hopefully, something will be done shortly.
73,
Mac / AE5PH
Dr. Kelso,
First, let me express my thanks for your excellent web site and TLE
data service. I have used it numerous times over the years to learn
more about satellite dynamics and, in recent months, to obtain
predictions for amateur satellites for communications.
There has been a lot of interest in the amateur satellite community
regarding the recently-launched Chinese cubesat BY70-1. While it is
sad to know that it will reenter in a few weeks, ham radio operators
have been communicating through BY70-1 as much as possible.
Since BY70-1 has exited the listing of satellites launched in the
last 30 days, it has become difficult to load timely TLE data into
the commonly available amateur satellite tracking softwares. I was
wondering if it would be possible to place the TLE data for BY70-1
into the Amateur Radio or CubeSats listing so that timely updates
become available again. This would only be to be done for the short
term, as it is currently estimated that BY70-1 will reenter about
February 22, 2017.
Thanks for your consideration.
Regards,
Mac Cody / AE5PH
On 01/29/2017 07:21 AM, Alan wrote:
> A suggestion would be to contact Tim through his website, politely explain
that BY70-1 is of interest
> to amateurs, and request that he include it in the amateur.txt list
because you need frequent updates.
> In the past he has been very responsive.
>
> 73s,
>
> Alan
> WA4SCA
>
>
>
>
> <-----Original Message-----
> <From: AMSAT-BB [mailto:amsat-bb-bounces@xxxxx.xxxx On Behalf Of Todd
Deckard
> <Sent: Sunday, January 29, 2017 6:48 AM
> <To: amsat-bb@xxxxx.xxx
> <Subject: [amsat-bb] THANKS Re: Where did the TLEs go for BY70-1?
> <
> <Greetings Mac,
> <
> <Thanks for this!
> <
> <The AMSAT ftp site isn't updated frequently enough for the deteriorating
orbit and a single precision
> <PLAN13 implementation on the ATmega1280.
> <
> <As an example here's the CELESTRAK output:
> <
> <BY70-1
> <1 41909U 16083C 17029.24424671 .00506735 24288-5 70240-3 0 9991
> <2 41909 97.5768 109.7306 0160558 244.2616 114.2002 15.85900257 5044
> <
> <Here's the AMSAT record sampled from the same time.
> <
> <BY70-1
> <1 41909U 16083C 17026.84471594 .00329730 24344-5 49404-3 0 9999
> <2 41909 97.5781 107.0760 0167800 253.3870 105.1424 15.83446051 4663
> <
> <As expected, atmospheric drag has the largest effect on the semi-major
axis, eccentricity, and
> argument
> <of perigee. Alas it won't be long now. Still haven't gotten a confirmed
QSO!
> <
> <Best
> <Todd
> <
> <
> <>Mac A. Cody maccody at att.net
> <>Sun Jan 29 02:43:52 UTC 2017
> <>Previous message: [amsat-bb] Where did the TLEs go for BY70-1?
> <>Next message: [amsat-bb] NJ7H-9
> <>Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
> <>Todd,
> <
> <>Mark KK6OTJ told me that you can find the latest TLEs for BY70-1 by using
> <>the SATCAT search function at http://www.celestrak.com/satcat/search.asp
> <>Search using the name BY70-1.
> <>
> <>73,
> <>
> <>Mac / AE5PH
> <
> <
> <_______________________________________________
> <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
>
------------------------------
Message: 11
Date: Mon, 30 Jan 2017 08:08:26 +0000 (UTC)
From: Nitin Muttin <vu3tyg@xxxxx.xx.xx>
To: Tanan Rangseeprom <nanrspm@xxxxx.xxx>, "info@xxxxxxxxxx.xxxx
<info@xxxxxxxxxx.xxx>, "amsat-bb@xxxxx.xxxx <amsat-bb@xxxxx.xxx>
Subject: Re: [amsat-bb] interested in India's Rocket Provider Launch
by PSLV rocket.
Message-ID: <471739751.2979181.1485763706905@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=UTF-8
Hello Tanan,
Thanks for reaching out to AMSAT INDIA and very glad to know about the
JAISAT-1 project and your requirements for a launch opportunity. As you have
mentioned PSLV has launched many satellites successfully for many years
I would suggest that you contact Antrix Corporation Limited which is the
commercial arm of Indian Space research organization and put forth your
proposal and requirement's.It will also be good to involve all those
connected in this project during the proposal.?
More details about Antrix at ?http://www.antrix.gov.in/
Feel free to contact me direct if you need any more information and I will
be glad to help. Sorry to take up the bandwidth of this group but hope this
information will help anyone who is looking for some similar opportunities.?
73
Nitin [VU3TYG]Secretary, AMSAT INDIA
From: Tanan Rangseeprom <nanrspm@xxxxx.xxx>
To: info@xxxxxxxxxx.xxxx amsat-bb@xxxxx.xxx
Sent: Sunday, 29 January 2017 4:22 PM
Subject: [amsat-bb] interested in India's Rocket Provider Launch by PSLV
rocket.
Dear All of AMSAT India
The delegate of Radio Amateur Society of Thailand under the patronage of
His Majesty the King (RAST) has provided us with AMSAT India contact
information in conjunction with our plans to launch a CUBESAT amateur radio
satellite in the near future. Perhaps, I should begin with a brief
introduction and an outline of our project to launch Thailand's first
amateur radio satellite. RAST is the national non-profit society for
amateur radio enthusiasts in Thailand which qualifies as a charitable
entity pursuant to a Thai Ministry of Finance declaration while the society
is also a member of the International Amateur Radio Union.
RAST has joined three Thai institutes of technology to support the first
Joint Academy Intelligent Satellites for Amateur Radio of Thailand
(JAISAT-1) project which has received funding from the Broadcasting and
Telecommunications Research and Development Fund for the Public Interest
(BTFP), which is under Thailand's regulator, the National Broadcasting and
Telecommunications Commission (NBTC). The three academic institutes are all
in the King Mongkut's Institute of Technology group, being King Mongkut's
University of Technology of North Bangkok (KMUT-NB), King Mongkut's
University of Technology Thonburi (KMUTT) and King Mongkut's Institute of
Technology Ladkrabang (KMITL).
In a meeting on July 22, 2015 the NBTC committee approved state funding for
RAST's JAISAT-1 project over a two-year period: 2016-2017. In my capacity
as the JAISAT-1 project leader in charge of building the satellite along
with a technical team from RAST, I am writing to you with a humble request
for assistance.? We currently face the challenge of finding an appropriate
rocket for the launch of the CUBESAT satellite, one that will be within our
limited budget and we are interested in India's Polar Satellite Launch
Vehicle or PSLV rocket.
In addition to our JAISAT-1 satellite there are two other CUBESAT projects
that have received funding in Thailand, including a KNACKSAT satellite to
be built by the King Mongkut Institute of Technology of North Bangkok
(KMUT-NB) and a SPACEBOX satellite to be built by the King Mongkut
University of Technology Thon Buri (KMUTT) as part of a project to "Explore
the World" using remote sensing with these satellites being equipped with
cameras. But RAST 's JAISAT-1 satellite will be for amateur radio
communications for which we are designing and building a linear transponder
ourselves in Thailand and we would like to seek your recommendations to
help us to get in touch with someone who can provide a PSLV rocket to
launch the CUBESAT satellite at a special rate one that we will be able to
afford.? We would very much appreciate any assistance, advice or
recommendations that you can make for us to help our project achieve all
its goals.
With deep respect. Sincerely,
Tanan Rangseeprom, HS1JAN
JAISAT-1 Project Leader Manager
Radio Amateur Society of Thailand Under the royal patronage of His Majesty
the King
_______________________________________________
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
------------------------------
Subject: Digest Footer
_______________________________________________
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 member? Join now to support the amateur satellite program!
http://www.amsat.org/mailman/listinfo/amsat-bb
------------------------------
End of AMSAT-BB Digest, Vol 12, Issue 21
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