Re: [Mw] Satellite to carry Amateur Radio 5840.00 MHz telemetry beacon
This satellite holds some promise of a decent and doable microwave technical challenge.
It will be possible to use our 5760 Transverters for a RX only application, maybe with minor tweaking.
The LO is 5616 MHz, with the RF of 5840 MHz, the IF is 224 MHz, right in the US 222 MHz band.
Maybe with a bigger dish, and a very low noise figure preamplifier, optimized at 5840 MHz, we could be in the UNITEC-1 deep space telemetry collection business.
The DEMI A32 LO with an external 10 MHz reference, can add the frequency stability needed. Or maybe Steve, N5AC, can preprogramm the A32 for a 5,840-145= 5,695 / 5 = 1,139.0 MHz
A reasonable challenge this winter morning, as I sip my lukewarm tea at the dining room table.
But more questions are raised:
1. Keplerian elements are great for satellites, but once UNITEC1 enters deep space, what do we use to calculate and predict the path for our accurate tracking ?
2. Is there anything special about the modulation scheme ?
Stan, W1LE Cape Cod FN41sr
Trevor . wrote:
On May 20 Japan is planning to launch four "CubeSats". The largest of them, UNITEC-1, will carry a 15 watt Amateur Radio 5840.00 MHz telemetry beacon and travel into deep space towards Venus
Three of the satellites will carry Amateur Radio payloads. On the AMSAT bulletin board Mineo Wakita JE9PEL writes
Four CubeSats in Japan are planned to launch at 20 May 2010 together with PLANET-C which belongs to JAXA by H-IIA rocket. http://www.jaxa.jp/index_e.html
UNITEC-1, NPO UNISEC (University Space Engineering Consortium) 5.8GHz http://www.unisec.jp/unitec-1/en/top.html
Negai*", Soka University 437.305MHz CW, Packet 1200bps FSK AX.25 http://kuro.t.soka.ac.jp/main.html
WASEDA-SAT2, Waseda University 437.485 MHz CW(FM), PCM-FSK(FM) 9600bps http://www.miyashita.mmech.waseda.ac.jp/Waseda-Sat2/index.htm
KSAT, Kagoshima University Uplink: S-band(2GHz, 10kbps), Downlink: Ku-band(13.275GHz, 10kbps/1Mbps) http://www.sci.kagoshima-u.ac.jp/~nishio/download/Ukaren2008Nishio.pdf
IARU Amateur Satellite Frequency Coordination information Unitec-1 http://www.amsat.org.uk/iaru/finished_detail.asp?serial=141 Negai http://www.amsat.org.uk/iaru/finished_detail.asp?serial=90 WASEDA-SAT2 http://www.amsat.org.uk/iaru/finished_detail.asp?serial=123
AMSAT Bulletin Board AMSAT-BB http://www.amsat.org/amsat-new/tools/maillist/
AMSAT-UK publish a colour A4 newsletter, OSCAR News, that is full of Amateur Satellite information. Join online at https://secure.amsat.org.uk/subs_form/
73 Trevor M5AKA Daily Amateur Radio News (Email/RSS): http://www.southgatearc.org/ Email Your News To: editor at southgatearc.org Or Use Form at: http://www.southgatearc.org/news/your_news_1.htm
Microwave mailing list microwave@lists.valinet.com http://www.valinet.com/mailman/listinfo/microwave
- Keplerian elements are great for satellites, but once UNITEC1 enters
deep space, what do we use to calculate and predict the path for our accurate tracking ?
It likely that this spacecraft will be tracked as part of the JPL HORIZONS system as were other Japanese deep space objects like Nozomi and Hayabusa. If that is the case, accurate ephemeris are available to anyone via web, telnet or e-mail.
See http://ssd.jpl.nasa.gov/horizons.cgi for details.
-Joe KM1P
Hi Stan,
The website http://www.unisec.jp/unitec-1/en/cooperation.html gives quite a lot of info as well...if you wish to make direct contact then you can email Naomi Kurahara703kurahara@gmail.com
73
Graham G3VZV ----- Original Message ----- From: "Stan" stan@capecod.com To: "Trevor ." m5aka@yahoo.co.uk Cc: microwave@lists.eclectechs.com; "Amsat Reflector" amsat-bb@amsat.org; "Stephen Hicks, N5AC" n5ac@n5ac.com Sent: Wednesday, January 27, 2010 3:25 PM Subject: [amsat-bb] Re: [Mw] Satellite to carry Amateur Radio 5840.00 MHztelemetry beacon
This satellite holds some promise of a decent and doable microwave technical challenge.
It will be possible to use our 5760 Transverters for a RX only application, maybe with minor tweaking.
The LO is 5616 MHz, with the RF of 5840 MHz, the IF is 224 MHz, right in the US 222 MHz band.
Maybe with a bigger dish, and a very low noise figure preamplifier, optimized at 5840 MHz, we could be in the UNITEC-1 deep space telemetry collection business.
The DEMI A32 LO with an external 10 MHz reference, can add the frequency stability needed. Or maybe Steve, N5AC, can preprogramm the A32 for a 5,840-145= 5,695 / 5 = 1,139.0 MHz
A reasonable challenge this winter morning, as I sip my lukewarm tea at the dining room table.
But more questions are raised:
- Keplerian elements are great for satellites, but once UNITEC1 enters
deep space, what do we use to calculate and predict the path for our accurate tracking ?
- Is there anything special about the modulation scheme ?
Stan, W1LE Cape Cod FN41sr
Trevor . wrote:
On May 20 Japan is planning to launch four "CubeSats". The largest of them, UNITEC-1, will carry a 15 watt Amateur Radio 5840.00 MHz telemetry beacon and travel into deep space towards Venus
Three of the satellites will carry Amateur Radio payloads. On the AMSAT bulletin board Mineo Wakita JE9PEL writes
Four CubeSats in Japan are planned to launch at 20 May 2010 together with PLANET-C which belongs to JAXA by H-IIA rocket. http://www.jaxa.jp/index_e.html
UNITEC-1, NPO UNISEC (University Space Engineering Consortium) 5.8GHz http://www.unisec.jp/unitec-1/en/top.html
Negai*", Soka University 437.305MHz CW, Packet 1200bps FSK AX.25 http://kuro.t.soka.ac.jp/main.html
WASEDA-SAT2, Waseda University 437.485 MHz CW(FM), PCM-FSK(FM) 9600bps http://www.miyashita.mmech.waseda.ac.jp/Waseda-Sat2/index.htm
KSAT, Kagoshima University Uplink: S-band(2GHz, 10kbps), Downlink: Ku-band(13.275GHz, 10kbps/1Mbps) http://www.sci.kagoshima-u.ac.jp/~nishio/download/Ukaren2008Nishio.pdf
IARU Amateur Satellite Frequency Coordination information Unitec-1 http://www.amsat.org.uk/iaru/finished_detail.asp?serial=141 Negai http://www.amsat.org.uk/iaru/finished_detail.asp?serial=90 WASEDA-SAT2 http://www.amsat.org.uk/iaru/finished_detail.asp?serial=123
AMSAT Bulletin Board AMSAT-BB http://www.amsat.org/amsat-new/tools/maillist/
AMSAT-UK publish a colour A4 newsletter, OSCAR News, that is full of Amateur Satellite information. Join online at https://secure.amsat.org.uk/subs_form/
73 Trevor M5AKA Daily Amateur Radio News (Email/RSS): http://www.southgatearc.org/ Email Your News To: editor at southgatearc.org Or Use Form at: http://www.southgatearc.org/news/your_news_1.htm
Microwave mailing list microwave@lists.valinet.com http://www.valinet.com/mailman/listinfo/microwave
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
How do we track body that is not in orbit around the earth. I guess there must be software.
I'd be happy to program the additional frequency in the A32 if that would help. Let me know if you would like this done. generally, I add it to the software and then state what release it is in and then any after that release will always have that frequency.
73, Steve
Sent from Austin, Texas, United States
On Thu, Jan 28, 2010 at 12:10, Graham Shirville g.shirville@btinternet.comwrote:
Hi Stan,
The website http://www.unisec.jp/unitec-1/en/cooperation.html gives quite a lot of info as well...if you wish to make direct contact then you can email Naomi Kurahara703kurahara@gmail.com
73
Graham G3VZV ----- Original Message ----- From: "Stan" stan@capecod.com To: "Trevor ." m5aka@yahoo.co.uk Cc: microwave@lists.eclectechs.com; "Amsat Reflector" < amsat-bb@amsat.org>; "Stephen Hicks, N5AC" n5ac@n5ac.com Sent: Wednesday, January 27, 2010 3:25 PM Subject: [amsat-bb] Re: [Mw] Satellite to carry Amateur Radio 5840.00 MHztelemetry beacon
This satellite holds some promise of a decent and doable microwave
technical challenge.
It will be possible to use our 5760 Transverters for a RX only application, maybe with minor tweaking.
The LO is 5616 MHz, with the RF of 5840 MHz, the IF is 224 MHz, right in the US 222 MHz band.
Maybe with a bigger dish, and a very low noise figure preamplifier, optimized at 5840 MHz, we could be in the UNITEC-1 deep space telemetry collection business.
The DEMI A32 LO with an external 10 MHz reference, can add the frequency stability needed. Or maybe Steve, N5AC, can preprogramm the A32 for a 5,840-145= 5,695 / 5 = 1,139.0 MHz
A reasonable challenge this winter morning, as I sip my lukewarm tea at the dining room table.
But more questions are raised:
- Keplerian elements are great for satellites, but once UNITEC1 enters
deep space, what do we use to calculate and predict the path for our accurate tracking ?
- Is there anything special about the modulation scheme ?
Stan, W1LE Cape Cod FN41sr
Trevor . wrote:
On May 20 Japan is planning to launch four "CubeSats". The largest of them, UNITEC-1, will carry a 15 watt Amateur Radio 5840.00 MHz telemetry beacon and travel into deep space towards Venus
Three of the satellites will carry Amateur Radio payloads. On the AMSAT bulletin board Mineo Wakita JE9PEL writes
Four CubeSats in Japan are planned to launch at 20 May 2010 together with PLANET-C which belongs to JAXA by H-IIA rocket. http://www.jaxa.jp/index_e.html
UNITEC-1, NPO UNISEC (University Space Engineering Consortium) 5.8GHz http://www.unisec.jp/unitec-1/en/top.html
Negai*", Soka University 437.305MHz CW, Packet 1200bps FSK AX.25 http://kuro.t.soka.ac.jp/main.html
WASEDA-SAT2, Waseda University 437.485 MHz CW(FM), PCM-FSK(FM) 9600bps http://www.miyashita.mmech.waseda.ac.jp/Waseda-Sat2/index.htm
KSAT, Kagoshima University Uplink: S-band(2GHz, 10kbps), Downlink: Ku-band(13.275GHz, 10kbps/1Mbps) http://www.sci.kagoshima-u.ac.jp/~nishio/download/Ukaren2008Nishio.pdf
IARU Amateur Satellite Frequency Coordination information Unitec-1 http://www.amsat.org.uk/iaru/finished_detail.asp?serial=141 Negai http://www.amsat.org.uk/iaru/finished_detail.asp?serial=90 WASEDA-SAT2 http://www.amsat.org.uk/iaru/finished_detail.asp?serial=123
AMSAT Bulletin Board AMSAT-BB http://www.amsat.org/amsat-new/tools/maillist/
AMSAT-UK publish a colour A4 newsletter, OSCAR News, that is full of Amateur Satellite information. Join online at https://secure.amsat.org.uk/subs_form/
73 Trevor M5AKA Daily Amateur Radio News (Email/RSS): http://www.southgatearc.org/ Email Your News To: editor at southgatearc.org Or Use Form at: http://www.southgatearc.org/news/your_news_1.htm
Microwave mailing list microwave@lists.valinet.com http://www.valinet.com/mailman/listinfo/microwave
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 (5)
-
Graham Shirville -
Joe Fitzgerald -
Nigel Gunn G8IFF/W8IFF -
Stan -
Stephen Hicks, N5AC