Re: RAFT is coming down! Grab telemetry
RAFT is de-orbiting within the next 12 hours or so.
It will arrive much earlier than any prediction based on Keplarian Elements because they are always too old. Best bet is to start 20 minutes early and point your beam towards AOS and where it will get about 10 deg above the horizon and wait. Then manually follow the short 3 minutes along the track...
- Who will get the last telemetry? - How hot will it get before telemetry dies?
We need worldwide operators collecting telemetry packets if they want to capture the last packet.
See the live temperature plot on the RAFT-RE_ENTRY WEB PAGE... http://www.ew.usna.edu/~bruninga/craft/save-raft.html
We particularly need data from the southern hemisphere where the passes are in the sun and will show the highest temps...
Tune in 145.825 1200 baud AX.25 packet. And even with a small antenna, on the two overhead passes per day, you should get at least one telemetry packet. They are every 10 seconds.. Each one begins with a unique serial T#nnn and so we can merge different captures from different folks.
Bob, WB4APR
Bob,
Any projection as to where it will re-enter? If it was close, we might to see a RAFT shooting the stars instead of the rapids. hihi
Wish I could help with the data but still building the station.
73's RoD KD0XX
A good friend will come and bail you out of jail, A TRUE friend will be sitting next to you saying.....
"DAMN THAT WAS FUN"
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org]On Behalf Of Robert Bruninga Sent: Tuesday, May 29, 2007 7:03 PM To: amsat-bb@amsat.org Subject: [amsat-bb] Re: RAFT is coming down! Grab telemetry
RAFT is de-orbiting within the next 12 hours or so.
It will arrive much earlier than any prediction based on Keplarian Elements because they are always too old. Best bet is to start 20 minutes early and point your beam towards AOS and where it will get about 10 deg above the horizon and wait. Then manually follow the short 3 minutes along the track...
- Who will get the last telemetry?
- How hot will it get before telemetry dies?
We need worldwide operators collecting telemetry packets if they want to capture the last packet.
See the live temperature plot on the RAFT-RE_ENTRY WEB PAGE... http://www.ew.usna.edu/~bruninga/craft/save-raft.html
We particularly need data from the southern hemisphere where the passes are in the sun and will show the highest temps...
Tune in 145.825 1200 baud AX.25 packet. And even with a small antenna, on the two overhead passes per day, you should get at least one telemetry packet. They are every 10 seconds.. Each one begins with a unique serial T#nnn and so we can merge different captures from different folks.
Bob, WB4APR
Sent via AMSAT-BB@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
Any projection as to where it will re-enter?
Not really, with an error of +/- 6 hours it can be anywhere over half the world. Even with an error of +/- 45 minutes, it can be anywhere around the world (but under that last orbit's path)... Bob
-----Original Message----- From: amsat-bb-bounces@amsat.org
[mailto:amsat-bb-bounces@amsat.org]On
Behalf Of Robert Bruninga Sent: Tuesday, May 29, 2007 7:03 PM To: amsat-bb@amsat.org Subject: [amsat-bb] Re: RAFT is coming down! Grab telemetry
RAFT is de-orbiting within the next 12 hours or so.
It will arrive much earlier than any prediction based on Keplarian Elements because they are always too old. Best
bet is
to start 20 minutes early and point your beam towards AOS
and
where it will get about 10 deg above the horizon and wait.
Then
manually follow the short 3 minutes along the track...
- Who will get the last telemetry?
- How hot will it get before telemetry dies?
We need worldwide operators collecting telemetry packets if
they
want to capture the last packet.
See the live temperature plot on the RAFT-RE_ENTRY WEB
PAGE...
http://www.ew.usna.edu/~bruninga/craft/save-raft.html
We particularly need data from the southern hemisphere where
the
passes are in the sun and will show the highest temps...
Tune in 145.825 1200 baud AX.25 packet. And even with a
small
antenna, on the two overhead passes per day, you should get
at
least one telemetry packet. They are every 10 seconds..
Each
one begins with a unique serial T#nnn and so we can merge different captures from different folks.
Bob, WB4APR
Sent via AMSAT-BB@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
Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings:
Stargate wrote:
Bob,
Any projection as to where it will re-enter? If it was close, we might to see a RAFT shooting the stars instead of the rapids. hihi
Wish I could help with the data but still building the station.
73's RoD KD0XX
A good friend will come and bail you out of jail, A TRUE friend will be sitting next to you saying.....
"DAMN THAT WAS FUN"
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org]On Behalf Of Robert Bruninga Sent: Tuesday, May 29, 2007 7:03 PM To: amsat-bb@amsat.org Subject: [amsat-bb] Re: RAFT is coming down! Grab telemetry
RAFT is de-orbiting within the next 12 hours or so.
It will arrive much earlier than any prediction based on Keplarian Elements because they are always too old. Best bet is to start 20 minutes early and point your beam towards AOS and where it will get about 10 deg above the horizon and wait. Then manually follow the short 3 minutes along the track...
- Who will get the last telemetry?
- How hot will it get before telemetry dies?
We need worldwide operators collecting telemetry packets if they want to capture the last packet.
See the live temperature plot on the RAFT-RE_ENTRY WEB PAGE... http://www.ew.usna.edu/~bruninga/craft/save-raft.html
We particularly need data from the southern hemisphere where the passes are in the sun and will show the highest temps...
Tune in 145.825 1200 baud AX.25 packet. And even with a small antenna, on the two overhead passes per day, you should get at least one telemetry packet. They are every 10 seconds.. Each one begins with a unique serial T#nnn and so we can merge different captures from different folks.
Bob, WB4APR
Sent via AMSAT-BB@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
Sent via AMSAT-BB@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
I have been following this thread closely.. I just wish I could be able to participate. Unfortunately due to my far north latitude it forbids me to be there. I am there in spirit though. I think it is so neat to be able to detect the radar envelope with a little cube sat.
73 Dale/KL7XJ # 30600 bp40kl
A suggestion that seems to work for me...turn PASSALL ON...and use an omnidirectional antenna...
The satellite is low enough that little gain is needed on the receive side...
Roger WA1KAT ----- Original Message ----- From: daleh@alaska.net To: stargatesg1@verizon.net Cc: "amsat-bb@AMSAT.Org" amsat-bb@amsat.org Sent: Tuesday, May 29, 2007 9:38 PM Subject: [amsat-bb] Re: RAFT is coming down! Grab telemetry
Stargate wrote:
Bob,
Any projection as to where it will re-enter? If it was close, we might
to
see a RAFT shooting the stars instead of the rapids. hihi
Wish I could help with the data but still building the station.
73's RoD KD0XX
A good friend will come and bail you out of jail, A TRUE friend will be sitting next to you saying.....
"DAMN THAT WAS FUN"
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org]On Behalf Of Robert Bruninga Sent: Tuesday, May 29, 2007 7:03 PM To: amsat-bb@amsat.org Subject: [amsat-bb] Re: RAFT is coming down! Grab telemetry
RAFT is de-orbiting within the next 12 hours or so.
It will arrive much earlier than any prediction based on Keplarian Elements because they are always too old. Best bet is to start 20 minutes early and point your beam towards AOS and where it will get about 10 deg above the horizon and wait. Then manually follow the short 3 minutes along the track...
- Who will get the last telemetry?
- How hot will it get before telemetry dies?
We need worldwide operators collecting telemetry packets if they want to capture the last packet.
See the live temperature plot on the RAFT-RE_ENTRY WEB PAGE... http://www.ew.usna.edu/~bruninga/craft/save-raft.html
We particularly need data from the southern hemisphere where the passes are in the sun and will show the highest temps...
Tune in 145.825 1200 baud AX.25 packet. And even with a small antenna, on the two overhead passes per day, you should get at least one telemetry packet. They are every 10 seconds.. Each one begins with a unique serial T#nnn and so we can merge different captures from different folks.
Bob, WB4APR
Sent via AMSAT-BB@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
Sent via AMSAT-BB@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
I have been following this thread closely.. I just wish I could be able to participate. Unfortunately due to my far north latitude it forbids me to be there. I am there in spirit though. I think it is so neat to be able to detect the radar envelope with a little cube sat.
73 Dale/KL7XJ # 30600 bp40kl _______________________________________________ Sent via AMSAT-BB@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
participants (4)
-
daleh＠alaska.net -
Robert Bruninga -
Roger Kolakowski -
Stargate