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CX2SA > SATDIG 01.10.11 14:16l 902 Lines 28436 Bytes #999 (0) @ WW
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From: CX2SA@CX2SA.LAV.URY.SA
To : SATDIG@WW
Today's Topics:
1. FO-29 off (DeYoung James)
2. Re: FO-29 off (Michael Schulz)
3. Old Oscar Sub Band 144.300-144.500 (ka9qjg)
4. Width of the Earth's penumbra (John Heath)
5. Re: Old Oscar Sub Band 144.300-144.500 (Jeff Moore)
6. Re: Old Oscar Sub Band 144.300-144.500 (Roger)
7. Re: calculation of eclipse (normn3ykf@xxxx.xx.xxxx
8. Re: Old Oscar Sub Band 144.300-144.500 (Andre)
9. Re: Old Oscar Sub Band 144.300-144.500 (Bryan Herbert)
10. VY1RM is QRV Satellite from Whitehorse, YT CP20 (Doug Papay)
11. Re: Width of the Earth's penumbra (Greg D.)
12. tiungsat-1 mo-46 (Daniel Lind)
13. Re: AMSAT-UK - Fall OSCAR News (Iain Young, G7III)
14. Re: FO-29 off (Mineo Wakita)
15. Re: AMSAT-UK - Fall OSCAR News (Trevor .)
16. Re: Old Oscar Sub Band 144.300-144.500 (Trevor .)
17. Re: Width of the Earth's penumbra (John Heath)
----------------------------------------------------------------------
Message: 1
Date: Fri, 30 Sep 2011 13:11:28 -0700 (PDT)
From: DeYoung James <deyoung_james@xxxxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] FO-29 off
Message-ID:
<1317413488.2824.YahooMailNeo@xxxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
Greetings,
?
I just got back on the air?from my new QTH (FM07uv) and monitored the beacon
with good signals?on Sep. 29 from 20:51 to 21:02 UTC.? I heard?no
transponder activity and no beacon signal on?the near zenith pass here on
Sep. 30. from 19:51 to 20:05.?
?
Jim,??N8OQ
------------------------------
Message: 2
Date: Fri, 30 Sep 2011 15:22:13 -0500
From: Michael Schulz <mschulz@xxxxxxxxxxxxxx.xxx>
To: amsat-bb <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: FO-29 off
Message-ID: <95111CE3-73FC-4B6D-B0FB-79DDDC302757@xxxxxxxxxxxxxx.xxx>
Content-Type: text/plain; charset=us-ascii
Same here, I tried for the entire pass but no dice. I hope it's only a
temporary thing and not another linear bird lost.
Mike, K5TRI
On Sep 30, 2011, at 3:11 PM, DeYoung James wrote:
> Greetings,
>
> I just got back on the air from my new QTH (FM07uv) and monitored the
beacon with good signals on Sep. 29 from 20:51 to 21:02 UTC. I heard no
transponder activity and no beacon signal on the near zenith pass here on
Sep. 30. from 19:51 to 20:05.
>
> Jim, N8OQ
> _______________________________________________
> 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: Fri, 30 Sep 2011 16:45:54 -0500
From: "ka9qjg" <ka9qjg@xxxxxx.xxx>
To: <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] Old Oscar Sub Band 144.300-144.500
Message-ID: <003501cc7fba$54d74360$fe85ca20$@xxx>
Content-Type: text/plain; charset="US-ASCII"
Hello hope Everyone is doing Well I "am not sure this Post went out or not
If Someone has a Answer if You like Just E-Mail Me Direct at
KA9QJG@xxxxxx.xxx
THANKS IN Advance
73 De Don KA9QJG
Hello From Don KA9QJG , Hope Everyone is doing Well I have Heard and Read
and ask a lot of Questions about Hams using the Oscar Sub Band 144.3-144.5
and as You can guess I Got a lot of Opinions From the ARRL, FCC And
others, So I thought the Best thing to go was to actually get the Answers
from You the users.
Yes I know that and as a Responsible Ham I think We all should use the
Guidelines , But in this Case From what I have found the Oscar Sats have
not been on the Air since in Many Years , and NO Other Sats or ISS Is using
the Freqs or set aside for them , So a Lot of Hams in the US are using the
Freqs for FM/ SSB CW DIGTAL And Look the Well Established APRS 144.39
And long time and still used 144.34 FM for Conducting ATV And I have seen
on the Internet Some States actually adding the 144.300-144.5 As Simplex FM
The Problem is I have Heard People Jamming and Arguments about this over the
Air , I have even seen on the Internet when doing searches for Info Some
States even include this NON Used 144.300 TO 144.500 For FM Simplex Etc..
Because NO Oscar Sats Exist or Nothing else to Interfere with But I agree
100Percent if there Was the Freqs should NOT Be used for anything other
then what it was intended for
Thanks 73
De Don KA9QJG
PS as You know We have a lot of older Hams kind of set in their ways and the
New ones Are Listening and looking for ways to Fit in, and We need as Many
New Responsible Hams in this Hobby as We can get But How Could We get on
these Freqs Some are using and Say Hey We are not allowed here Because of
the Oscar Sub Band Something that has been Gone for over 20 Yrs
------------------------------
Message: 4
Date: Fri, 30 Sep 2011 23:17:08 +0100 (BST)
From: John Heath <g7hia@xxxxxxxxxx.xxx>
To: Amsat <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Width of the Earth's penumbra
Message-ID: <1317421028.20893.YahooMailRC@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=iso-8859-1
This bb never fails to amaze me with how helpful folks can be.
It was G0SFJ's postings about ARISSAt-1 MET time which set me thinking about
the
width of the?half shadow (Penumbra) experienced by the satellite before and
after eclipse.
I was pointed to the simulation option in?the satellite tracker?Orbitron 3.17
which shows the selected satellites Eclipse condition
No,?Penumbra, Umbra. To activate?this option click on the data tab at the
bottom
of the satellite listing.
The simulation mode offers a variety of time steps down to?0.25 seconds.
Selecting the?ISS and stepping through an eclipsed part of the orbit tonight I
estimated that it took the ISS 8.75 seconds to cross the Penumbra.
If 7km per second is about right for the ISS then the Penumbra is 59.5
kilometres wide +/- about 1.75km.
My workings may well be adrift but you get the idea.
What an interesting utility, for us telemetry nuts?it will add an extra
dimension to solar panel data.
Off to try it on?some higher flying birds.
73 All? G7HIA
Happy Weekend
------------------------------
Message: 5
Date: Fri, 30 Sep 2011 15:38:12 -0700
From: "Jeff Moore" <tnetcenter@xxxxx.xxx>
To: "ka9qjg" <ka9qjg@xxxxxx.xxx>, <AMSAT-BB@xxxxx.xxx>
Subject: [amsat-bb] Re: Old Oscar Sub Band 144.300-144.500
Message-ID: <50DC48CFE7224C0C885D5F416CBB8D70@xxxxx>
Content-Type: text/plain; charset="iso-8859-1"
The APRS frequency 144.390 MHz has been allocated for some time now and it
could be argued that it IS a satellite mode. I don't see it going away any
time soon either.
Band plans are generally suggestions unless there are specific laws
allocating particluar bands and frequencies. Are the "Oscar" frequencies
allocated by law?
73,
Jeff Moore -- KE7ACY
CN94
----- Original Message ----- From: "ka9qjg" <ka9qjg@xxxxxx.xxx>
[snip]
Hello From Don KA9QJG , Hope Everyone is doing Well I have Heard and Read
and ask a lot of Questions about Hams using the Oscar Sub Band 144.3-144.5
and as You can guess I Got a lot of Opinions From the ARRL, FCC And
others, So I thought the Best thing to go was to actually get the Answers
from You the users.
Yes I know that and as a Responsible Ham I think We all should use the
Guidelines , But in this Case From what I have found the Oscar Sats have
not been on the Air since in Many Years , and NO Other Sats or ISS Is using
the Freqs or set aside for them , So a Lot of Hams in the US are using the
Freqs for FM/ SSB CW DIGTAL And Look the Well Established APRS 144.39
And long time and still used 144.34 FM for Conducting ATV And I have seen
on the Internet Some States actually adding the 144.300-144.5 As Simplex FM
The Problem is I have Heard People Jamming and Arguments about this over the
Air , I have even seen on the Internet when doing searches for Info Some
States even include this NON Used 144.300 TO 144.500 For FM Simplex Etc..
Because NO Oscar Sats Exist or Nothing else to Interfere with But I agree
100Percent if there Was the Freqs should NOT Be used for anything other
then what it was intended for
Thanks 73
De Don KA9QJG
PS as You know We have a lot of older Hams kind of set in their ways and the
New ones Are Listening and looking for ways to Fit in, and We need as Many
New Responsible Hams in this Hobby as We can get But How Could We get on
these Freqs Some are using and Say Hey We are not allowed here Because of
the Oscar Sub Band Something that has been Gone for over 20 Yrs
------------------------------
Message: 6
Date: Fri, 30 Sep 2011 18:41:10 -0400
From: Roger <Rogerkola@xxx.xxx>
To: ka9qjg <ka9qjg@xxxxxx.xxx>, amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Old Oscar Sub Band 144.300-144.500
Message-ID: <4E864586.8050902@xxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Google would seem to indicate that the best solution would be to use the
rules outlined by your local 2 meter coordinating committee...in
reality, those frequencies are not currently published as in use by any
amateur satellites.
Roger
WA1KAT
On 9/30/2011 5:45 PM, ka9qjg wrote:
>
>
> Hello hope Everyone is doing Well I "am not sure this Post went out or not
> If Someone has a Answer if You like Just E-Mail Me Direct at
> KA9QJG@xxxxxx.xxx
>
>
>
> THANKS IN Advance
>
> 73 De Don KA9QJG
>
>
>
>
>
> Hello From Don KA9QJG , Hope Everyone is doing Well I have Heard and Read
> and ask a lot of Questions about Hams using the Oscar Sub Band 144.3-144.5
> and as You can guess I Got a lot of Opinions From the ARRL, FCC And
> others, So I thought the Best thing to go was to actually get the Answers
> from You the users.
>
> Yes I know that and as a Responsible Ham I think We all should use the
> Guidelines , But in this Case From what I have found the Oscar Sats have
> not been on the Air since in Many Years , and NO Other Sats or ISS Is using
> the Freqs or set aside for them , So a Lot of Hams in the US are using the
> Freqs for FM/ SSB CW DIGTAL And Look the Well Established APRS 144.39
>
>
>
> And long time and still used 144.34 FM for Conducting ATV And I have seen
> on the Internet Some States actually adding the 144.300-144.5 As Simplex FM
>
>
>
> The Problem is I have Heard People Jamming and Arguments about this over the
> Air , I have even seen on the Internet when doing searches for Info Some
> States even include this NON Used 144.300 TO 144.500 For FM Simplex Etc..
> Because NO Oscar Sats Exist or Nothing else to Interfere with But I agree
> 100Percent if there Was the Freqs should NOT Be used for anything other
> then what it was intended for
>
>
>
> Thanks 73
>
>
>
> De Don KA9QJG
>
>
>
> PS as You know We have a lot of older Hams kind of set in their ways and the
> New ones Are Listening and looking for ways to Fit in, and We need as Many
> New Responsible Hams in this Hobby as We can get But How Could We get on
> these Freqs Some are using and Say Hey We are not allowed here Because of
> the Oscar Sub Band Something that has been Gone for over 20 Yrs
>
>
>
>
>
>
>
> _______________________________________________
> 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: 7
Date: Fri, 30 Sep 2011 19:32:07 -0400
From: <normn3ykf@xxxx.xx.xxx>
To: "'amsat'" <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: calculation of eclipse
Message-ID: <20110930233207.E7ZZY.110597.root@xxxxxxxxxxxxxxxx>
Content-Type: text/plain; charset=utf-8
Thanks to all who responded. I found that Nova for windows will predict
eclipses. Still am reading g3ruh's articles. Looks like fun.
Norm
------------------------------
Message: 8
Date: Sat, 01 Oct 2011 01:36:39 +0200
From: Andre <sats@xxxxxx.xxxxx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Old Oscar Sub Band 144.300-144.500
Message-ID: <4E865287.3040202@xxxxxx.xxxxx.xx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
it is also not an oscar band in at least ITU region 1 and think regio 2
as wel meaning that it can not be used for always on transmitters and
probably not wise to use for always on recievers as wel at least if they
are linked to a transponder, guess a command reciever would be ok.
so it is very unlikely to be hindering any satelite operation now and in
the future.
73 Andre PE1RDW
Op 1-10-2011 0:41, Roger schreef:
> Google would seem to indicate that the best solution would be to use
> the rules outlined by your local 2 meter coordinating committee...in
> reality, those frequencies are not currently published as in use by
> any amateur satellites.
>
> Roger
> WA1KAT
>
> On 9/30/2011 5:45 PM, ka9qjg wrote:
>>
>>
>> Hello hope Everyone is doing Well I "am not sure this Post went out
>> or not
>> If Someone has a Answer if You like Just E-Mail Me Direct at
>> KA9QJG@xxxxxx.xxx
>>
>>
>>
>> THANKS IN Advance
>>
>> 73 De Don KA9QJG
>>
>>
>>
>>
>>
>> Hello From Don KA9QJG , Hope Everyone is doing Well I have Heard
>> and Read
>> and ask a lot of Questions about Hams using the Oscar Sub Band
>> 144.3-144.5
>> and as You can guess I Got a lot of Opinions From the ARRL, FCC And
>> others, So I thought the Best thing to go was to actually get the
>> Answers
>> from You the users.
>>
>> Yes I know that and as a Responsible Ham I think We all should use the
>> Guidelines , But in this Case From what I have found the Oscar Sats
>> have
>> not been on the Air since in Many Years , and NO Other Sats or ISS
>> Is using
>> the Freqs or set aside for them , So a Lot of Hams in the US are
>> using the
>> Freqs for FM/ SSB CW DIGTAL And Look the Well Established APRS
>> 144.39
>>
>>
>>
>> And long time and still used 144.34 FM for Conducting ATV And I
>> have seen
>> on the Internet Some States actually adding the 144.300-144.5 As
>> Simplex FM
>>
>>
>>
>> The Problem is I have Heard People Jamming and Arguments about this
>> over the
>> Air , I have even seen on the Internet when doing searches for Info
>> Some
>> States even include this NON Used 144.300 TO 144.500 For FM Simplex
>> Etc..
>> Because NO Oscar Sats Exist or Nothing else to Interfere with But I
>> agree
>> 100Percent if there Was the Freqs should NOT Be used for anything other
>> then what it was intended for
>>
>>
>>
>> Thanks 73
>>
>>
>>
>> De Don KA9QJG
>>
>>
>>
>> PS as You know We have a lot of older Hams kind of set in their ways
>> and the
>> New ones Are Listening and looking for ways to Fit in, and We need as
>> Many
>> New Responsible Hams in this Hobby as We can get But How Could We get on
>> these Freqs Some are using and Say Hey We are not allowed here
>> Because of
>> the Oscar Sub Band Something that has been Gone for over 20 Yrs
>>
>>
>>
>>
>>
>>
>>
>> _______________________________________________
>> 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: Fri, 30 Sep 2011 18:04:29 -0700
From: Bryan Herbert <ke6zgp@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Old Oscar Sub Band 144.300-144.500
Message-ID: <4E86671D.3060700@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
This is some of the activity that I know of currently taking place in
the "New OSCAR Subband"
144.3400 FM ATV Network Calling Primary (Secondary freq is 146.4300)
144.3600 AM Military Radio Collectors Association - East Coast (WW2
Aircraft Sets)
144.3900 FM Automatic Packet Reporting System (APRS) Primary (Secondary
freq is 144.9900)
144.4000 AM Old Nationwide Calling/Simplex (New freq is 144.4500)
144.4000 AM Military Radio Collectors Group (West Coast)
144.4000 AM Pacific Northwest
144.4250 AM New England
144.4500 AM Military Radio Collectors Association - East Coast
144.4500 AM Military Radio Collectors Group - West Coast
144.4500 AM Arizona, California, New Jersey, New York
The regional AM net info is current as of this year, the info was
collected from several blogs and reflectors with recent date/time
stamps. The MRCA info is listed on their website. The MRCG info I
collected from the Santa Paula event in August, there was a lot of
interference on 144.4000 from APRS due to the wideband filters used on
the older green radios so comms were moved to 144.4500 MHz.
--
Bryan Herbert - KE6ZGP
Newhall, CA. DM04RJ USA
http://bryanherbert.com
http://twitter.com/ke6zgp
------------------------------
Message: 10
Date: Sat, 1 Oct 2011 00:03:32 -0400
From: Doug Papay <doug.papay@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] VY1RM is QRV Satellite from Whitehorse, YT CP20
Message-ID:
<CAO5b8UqgfFwZ6vwU8vHp6=q8iszFpyu+qVo5WgEkBcPwz94cWg@xxxx.xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Hello All,
After many months of station design, assembly and testing, Ron VY1RM in
Whitehorse, YT Canada CP20, is now QRV satellite. Ron, having been active
on satellite many years ago, was already equipped with the necessary
antennas and radios, but had required a rotor upgrade to get his antennas
pointing automatically. This past summer, he and a team of local hams
reinstalled his antennas on a G-5500 rotor at his QTH. He is now running
SatPC32 to control both the rotor (with LVBTracker) and his radios. Ron's
accomplishment puts a permanent satellite station in the Yukon Territory
(likely the only one.)
Please be listening for Ron VY1RM on both FM and linear birds in the weeks
to come; give him a call if you happen to hear his callsign and welcome him
back to satellite!
In addition to the fact that Ron will put the rare CP20 grid within reach,
the Yukon territory is also a valid entity for those who are working on the
AMSAT sexagesimal or century awards. And for those up for a real
challenge--the CANADAward is available from the RAC for those who complete a
2-way QSO with each of Canada's 13 provinces/territories via satellite. (not
easy!)
73,
Doug KD8CAO
------------------------------
Message: 11
Date: Fri, 30 Sep 2011 21:18:47 -0700
From: "Greg D." <ko6th_greg@xxxxxxx.xxx>
To: <g7hia@xxxxxxxxxx.xxx>, <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Width of the Earth's penumbra
Message-ID: <BLU133-W23CAD9D69DB0361ADDFB9CA9F40@xxx.xxx>
Content-Type: text/plain; charset="iso-8859-1"
The ISS isn't going straight through the Penumbra, top to bottom, but rather
diagonally through it. Neglecting that the ISS isn't going in a straight
line either (it's an arc), the 8-ish seconds are the hypotenuse of the
triangle. We still don't know the height.
I wonder if we can figure out more about the shape of the Penumbra by
looking at the transit times for satellites at different elevations?
Sorry, this is starting to make my head hurt,
Greg KO6TH
> Date: Fri, 30 Sep 2011 23:17:08 +0100
> From: g7hia@xxxxxxxxxx.xxx
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Width of the Earth's penumbra
>
> This bb never fails to amaze me with how helpful folks can be.
>
> It was G0SFJ's postings about ARISSAt-1 MET time which set me thinking
about the
> width of the half shadow (Penumbra) experienced by the satellite before and
> after eclipse.
>
> I was pointed to the simulation option in the satellite tracker Orbitron
3.17
> which shows the selected satellites Eclipse condition
>
> No, Penumbra, Umbra. To activate this option click on the data tab at the
bottom
> of the satellite listing.
>
> The simulation mode offers a variety of time steps down to 0.25 seconds.
>
> Selecting the ISS and stepping through an eclipsed part of the orbit
tonight I
> estimated that it took the ISS 8.75 seconds to cross the Penumbra.
> If 7km per second is about right for the ISS then the Penumbra is 59.5
> kilometres wide +/- about 1.75km.
>
> My workings may well be adrift but you get the idea.
>
> What an interesting utility, for us telemetry nuts it will add an extra
> dimension to solar panel data.
>
> Off to try it on some higher flying birds.
>
> 73 All G7HIA
>
> Happy Weekend
> _______________________________________________
> 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: 12
Date: Fri, 30 Sep 2011 21:42:50 -0700
From: Daniel Lind <kf1buz@xxxxx.xxx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] tiungsat-1 mo-46
Message-ID: <002901cc7ff4$94529690$bcf7c3b0$@xxx>
Content-Type: text/plain; charset="us-ascii"
If this has been posted already sorry....
There any freqs for the bird of china?
Thanks
Dan
Thank you for your time
KF1BUZ k1gem KF7LJV
and the birds Fred N (RIP) oli. and Kilo
------------------------------
Message: 13
Date: Sat, 01 Oct 2011 10:20:06 +0100
From: "Iain Young, G7III" <g7iii@xxxxx.xxx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: AMSAT-UK - Fall OSCAR News
Message-ID: <4E86DB46.1000205@xxxxx.xxx>
Content-Type: text/plain; charset=ISO-8859-1
Trevor Wrote:
On 30/09/11 00:26, Trevor . wrote:
> AMSAT-UK - Fall OSCAR News
>
> The Fall edition of the color A4 newsletter OSCAR News is being posted to
AMSAT-UK members this week
>
> As usual it's packed with Amateur Satellite articles:
>
[SNIP]
> - Syncart geostationary transponder
[SNIP]
Teases! (All of you involved in OSCAR News, not just Trevor!)
I read this last night, and was hoping it might be an announcement of a
possible opportunity. OSCAR News arrived here this morning, and it's
"just" an article about the transponder.
Good article, and great edition of OSCAR News though
73s
Iain
------------------------------
Message: 14
Date: Sat, 1 Oct 2011 20:30:58 +0900
From: "Mineo Wakita" <ei7m-wkt@xxxxxxxxx.xx.xx>
To: <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: FO-29 off
Message-ID: <000301cc802d$9ca08170$0300a8c0@xxxxxxxxxxxxxx>
Content-Type: text/plain; format=flowed; charset="iso-2022-jp";
reply-type=original
FO-29 is now OFF status. I think that FO-29 is OFF when a ratio of the
eclipse is less than approximately 11% according to my past experiment.
Because the eclipse rate of these past several days is approximately
28%, the other causes are thought about this FO-29 OFF.
http://www.ne.jp/asahi/hamradio/je9pel/fo29tron.htm (posted 16Nov2010)
Date Mins/Day Sun%
Thu 29Sep11 1034 71.81%
Fri 30Sep11 1049 72.85%
Sat 01Oct11 1030 71.53%
Sun 02Oct11 1049 72.85%
Mon 03Oct11 1020 70.83%
Tue 04Oct11 1055 73.26%
JE9PEL, Mineo Wakita
------------------------------
Message: 15
Date: Sat, 1 Oct 2011 12:46:29 +0100 (BST)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: AMSAT-UK - Fall OSCAR News
Message-ID:
<1317469589.60745.YahooMailClassic@xxxxxxxx.xxxx.xxx.xxxxx.xxx>
Content-Type: text/plain; charset=utf-8
--- On Sat, 1/10/11, Iain Young, G7III <g7iii@xxxxx.xxx> wrote:
> and it's "just" an article about the transponder.
Hi Iain,
I hope those working on the Syncart idea are eventually successful. It was
July 1971 that AMSAT submitted the inital proposal to NASA. Let's hope we
see a Syncart payload before the 50th anniversary.
AMSAT-DL article - 40th Anniversary of AMSAT-SYNCART (in Google English)
http://tinyurl.com/SYNCART40Years
73 Trevor M5AKA
------------------------------
Message: 16
Date: Sat, 1 Oct 2011 13:02:34 +0100 (BST)
From: "Trevor ." <m5aka@xxxxx.xx.xx>
To: amsat-bb@xxxxx.xxx
Subject: [amsat-bb] Re: Old Oscar Sub Band 144.300-144.500
Message-ID:
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In IARU Region 1 144.400-144.490 are used for Propagation Beacons, see
http://www.rsgb.org/committees/spectrumforum/docs/rsgb_band_plan_2010.htm
The section 144.000 - 144.040 may be suitable for an Amateur Satellite
linear transponder downlink.
In recent years IARU Region 1 has been looking at this. The RSGB submitted a
paper on the subject, see
CT08_C5_16 RSGB 144MHz Increased Satellite Service
http://www.rsgb.org/spectrumforum/IARU_R1_Conference_2008/ctte5/CT08_C5_16%20R
SGB%20144MHz%20Increased%20Satellite%20Service.pdf
or
http://tinyurl.com/2mSatelliteAllocation
I don't know if any AMSAT groups in IARU Regions 2 or 3 are looking to
increase the Satellite segment in 2m ? Clearly satellites require global
allocations.
73 Trevor M5AKA
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Message: 17
Date: Sat, 1 Oct 2011 13:03:48 +0100 (BST)
From: John Heath <g7hia@xxxxxxxxxx.xxx>
To: "Greg D." <ko6th_greg@xxxxxxx.xxx>
Cc: Amsat <amsat-bb@xxxxx.xxx>
Subject: [amsat-bb] Re: Width of the Earth's penumbra
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Hi Greg,
Making my head hurt too. Buts it interesting.
I though I might get a 70cms antenna up and try the telemetry from FO-29 which
flies much higher = wider penumbra.
Perhaps the changed light level?will be detectable in the solar panel
current. I
don't know how "dark it is" in the penumbra either.
73 John G7HIA
?
________________________________
From: Greg D. <ko6th_greg@xxxxxxx.xxx>
To: g7hia@xxxxxxxxxx.xxxx amsat-bb@xxxxx.xxx
Sent: Saturday, 1 October, 2011 5:18:47
Subject: [amsat-bb] Re: Width of the Earth's penumbra
The ISS isn't going straight through the Penumbra, top to bottom, but rather
diagonally through it.? Neglecting that the ISS isn't going in a straight line
either (it's an arc), the 8-ish seconds are the hypotenuse of the triangle.?
We
still don't know the height.
I wonder if we can figure out more about the shape of the Penumbra by
looking at
the transit times for satellites at different elevations?
Sorry, this is starting to make my head hurt,
Greg? KO6TH
> Date: Fri, 30 Sep 2011 23:17:08 +0100
> From: g7hia@xxxxxxxxxx.xxx
> To: amsat-bb@xxxxx.xxx
> Subject: [amsat-bb] Width of the Earth's penumbra
>
> This bb never fails to amaze me with how helpful folks can be.
>
> It was G0SFJ's postings about ARISSAt-1 MET time which set me thinking about
>the
>
> width of the half shadow (Penumbra) experienced by the satellite before and
> after eclipse.
>
> I was pointed to the simulation option in the satellite tracker Orbitron
3.17
> which shows the selected satellites Eclipse condition
>
> No, Penumbra, Umbra. To activate this option click on the data tab at the
>bottom
>
> of the satellite listing.
>
> The simulation mode offers a variety of time steps down to 0.25 seconds.
>
> Selecting the ISS and stepping through an eclipsed part of the orbit
tonight I
> estimated that it took the ISS 8.75 seconds to cross the Penumbra.
> If 7km per second is about right for the ISS then the Penumbra is 59.5
> kilometres wide +/- about 1.75km.
>
> My workings may well be adrift but you get the idea.
>
> What an interesting utility, for us telemetry nuts it will add an extra
> dimension to solar panel data.
>
> Off to try it on some higher flying birds.
>
> 73 All? G7HIA
>
> Happy Weekend
> _______________________________________________
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??? ??? ??? ? ??? ??? ?
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End of AMSAT-BB Digest, Vol 6, Issue 544
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