( Hier in forum, Thema eröfnet am 24.06.2014 )
Two Geostationary Ham Radio Transponders
AMSAT-DL President, Peter Guelzow DB2OS, has confirmed there will be two amateur radio transponders on the Geostationary Es’hail 2 satellite planned to launch at the end of 2016.
Peter Guelzow DB2OS has provided the following information:
Es’HailSat-2 will carry two geostationary “Phase 4” amateur radio transponders !!
As a result of a concept proposed by the Qatar Amateur Radio Society, Es’ Hailsat, the Qatar Satellite Company, have announced that their new, geostationary, Es’HailSat-2 communications spacecraft will provide transponders for use by radio amateurs. The spacecraft is expected to be ready for launch by the end of 2016.
Es’HailSat-2 will provide a 250 kHz linear transponder intended for conventional analogue (e.g. SSB / CW) operations in addition to another transponder which will have an 8 MHz bandwidth. The latter transponder is intended for experimental digital modulation schemes and DVB amateur television.
Precise uplink and downlink frequencies remain to be finalized but the uplinks will be in the 2.400-2.450 GHz and the downlinks in the 10.450-10.500 GHz amateur satellite service allocations.
Both transponders will have broad beam antennas to provide full coverage over about 1/3rd of the earth’s surface. Precise operational plans will be finalised over the coming months but it is anticipated that only quite simple ground equipment will be required to use this satellite.
A team of amateurs, led by Peter Guelzow DB2OS (President of AMSAT-DL) are providing technical support to this ground breaking project which is expected to provide an exciting new phase of activity for radio amateurs for the 21st century.
Es’hailSat – the Qatar Satellite Company
Presentation by Peter Guelzow DB2OS, President of AMSAT-DL, at the 2013 AMSAT-UK Colloquium
Diesen komerziellen Satelit baut Mitshubishi
http://www.aerospace-technology.com/pro ... satellite/
Katarischer Kommunikationssatellit startet mit AMSAT-DL-Transpondern
Die Zusammenarbeit zwischen der katarischen Amateurfunkvereinigung QARS, der Qatar Satellite Company und der AMSAT-DL trägt Früchte: 2016 sollen Amateurfunknutzlasten an Bord des katarischen Satelliten Es'HailSat-2 ins All fliegen. Das Projekt kann die Tür für weitere Starts auf geostationären Satelliten öffnen. Die beiden Transponder auf dem geostationären Es'hail-2-Satelliten könnten Funkamateure von Brasilien über Europa bis nach Indien verbinden. Kleiner Wermutstropfen: Der Norden Amerikas wird nicht abgedeckt. Der Satellit soll Ende 2016 startbereit sein und auf 25,5 Grad Ost positioniert werden. Mit diesem Projekt wäre Phase 4, die vorletzte Phase der AMSAT-Missionsziele erreicht. Diese sieht die Positionierung einer Amateurfunknutzlast in einer geostationären Erdumlaufbahn vor. Es'HailSat-2 wird einen 250 kHz breiten Lineartransponder für konventionellen Analogbetrieb sowie einen 8 MHz breiten Transponder für experimentelle digitale Modulationsarten und DVB-ATV an Bord haben. Die genauen Uplink- und Downlinkfrequenzen sind noch nicht abschließend festgelegt. Fest steht jedoch, dass der Uplink im Bereich 2,400 bis 2,450 GHz und der Downlink im Bereich 10,450 bis 10,500 GHz innerhalb der jeweiligen Amateurfunkzuweisungen liegen wird. Die Antennen beider Transponder werden große Öffnungswinkel aufweisen, sodass die maximal mögliche Fläche, d.h. ca. ein Drittel der Erdoberfläche, abgedeckt wird. Genaue technische Parameter werden innerhalb der nächsten Monate festgelegt. Es ist zu erwarten, dass nur eine verhältnismäßig einfache Stationsausrüstung für den Betrieb über diesen Satelliten erforderlich ist. Dieses bahnbrechende Projekt wird eine Phase neuer, spannender Amateurfunkaktivitäten auslösen. Die technische Expertise stellt ein vom AMSAT-DL-Vorsitzenden Peter Gülzow, DB2OS, geleitetes Team von Funkamateuren zur Verfügung.
September 2014..... User frequenzen festgelegt !!
User TX freq. for dvb-s and dvb-t : 2401,500MHz ~ 2409,500MHz ..... polarisation right cirkular
User RX freq. : 10,491GHz ~ 10,499GHz ..... polarisation linear
Voraussichtlich ab ende 2016 !!..... verschoben auf Juli-September 2017
Empfohlene min. Antennengröße + LNB 1,6dB Nf ..... für ein guten Empfang:
Randgebiete ................. ab 90cm ( wie Brasil oder Asien )
Skandinavische Länder ..... ab 80cm
Mittel und Südeuropa ....... ab 70 / 60cm
Nordafrika und Saudiarabien ....... 55cm
Zentralafrika ...... 50cm
Schmalband Lineartransponder wird erlauben gleichzeitiges arbeiten von 90 SSB Stationen.
Breitband Digital Transponder wird erlauben gleichzeitiges arbeiten 2 bis 4 DVB-S Stationen ( je nach Signalbandbreite )
Narrowband linear transponder will allow simultaneous work of 90 SSB stations.
Broadband digital transponder will allow simultaneous work 2 to 4 DVB-S stations (depending on the signal bandwidth)
Was brauche ich um diese künftige Signale von Geostationären Satellit empfangen zu können ?
1. Offset oder Primärfokus Spiegel mit mindestens 60cm Größe
2. geeigneten PLL gelockten LNB .... Beispiel viewtopic.php?f=7&t=284&start=135#p1519 ( Avenger-Octagon test )
3. einen DVB-S Receiver mit manuelle Einstellmöglichkeit von Frequenz , Symbolrate , Video und Audio PID
Aber Vorsicht, nicht alle Receiver können auch empfangen Symbolraten unter 4Msym.... zwei Versionen die das können und von mir getestet
wurden sind: Comag SL25 und DSR6012 ( verschiedene Herstehler )..... angeblich können das auch: Skymaster DS55 ,
Medion XX3500R und Medion FTA3000R .....allerdings kann ich keine aussage machen da ich selber nicht getestet habe.
What do I need for these future signals from geostationary satellite be able to receive ?
1. Offset or primary focus mirror with at least 60cm size
2. appropriate LNB with PLL locked Local Oscilator .... example viewtopic.php?f=7&t=284&start=135#p1519 ( Avenger-Octagon test )
3. DVB-T Receiver with manual adjustment of frequency, symbol rate, video and audio PID
But beware, not all receivers can also receive symbol rates under 4Msym .... two versions of the can, and tested by me
were are: Comag SL25 and DSR6012 (various manufacturer) ..... supposedly can also: Skymaster DS55,
Medion Medion XX3500R and FTA3000R but ..... I can not make meaningful as I have not tested myself.
Vorsicht, neue serie Avenger und Octagon LNBs auf dem Markt ( von aussen fast gleichaussehend wie alte ) die für Umbau nicht geeignet ist:
Attention, new series Avenger and Octagon LNBs on the market (from the outside almost the same looking as old) is not suitable for our purposes:
Der folgende Beitrag wurde von der Qatar Satellite Unternehmen Es'hailSat während der ITU Symposium und Workshop
über kleine Satelliten Regulierung und Kommunikationssysteme (Prag, Tschechische Republik, 2-4 März 2015) präsentiert.
The following paper was presented by the Qatar Satellite Company Es'hailSat during the ITU Symposium and Workshop
on small satellite regulation and communication systems (Prague, Czech Republic, 2-4 March 2015).
Broschüre von Ham Radio 2015
Laut Startliste, es ist am 12.10.2016 soweit....
16-10-12 ...... Es'hail 2 ........ Falcon 9 ........ Cape Canaveral Sat-ND141231
Angeblich verschoben auf erster Quartal 2017
http://spacenews.com/eshailsat-taps-spa ... 16-launch/
From: http://www.ee.co.za/article/radio-amate ... lites.html 30.03.2016.
Radio amateurs have a long history in satellites: first it was medium sized satellites in low earth and Molniya orbits, but after the free launch opportunities as a secondary payload on a major launch dried up, the attention turned to CubeSats. As part of educational support programmes, NASA and other launch agencies provide free launches for CubeSats while Russia, India and China offer inexpensive launch opportunities.
The quest for a geostationary amateur radio satellites has always been there but free launches into a geostationary orbit have up to now not materialised. This will soon change. In the next few years radio amateurs will have access to two geostationary platforms, one that will service the Americas and another one, particular attractive to South Africans, that will be positioned at 26° East giving 24 hour access to Africa, Europe and the Middle East. These two geostationary projects will be included in commercial platforms similar to Amateur Radio Satellite (AMSAT) South Africa seeking to have an amateur radio transponder included in South Africa’s next satellite currently designated as EOS-1 (Earth Observation Satellite).
Following a proposal from the Qatar Amateur Radio Society, Es’Hailsat, the Qatar Satellite Company, announced that their new geostationary satellite, the Es’HailSat-2 communications spacecraft, will carry two transponders for use by radio amateurs.
Es’HailSat-2 will provide the first amateur radio geostationary communication capability linking Brazil and India with all areas in between. It will carry two AMSAT-DL-designed Phase 4 amateur radio transponders, consisting of one 250 kHz linear analogue transponder and an experimental digital modulation transponder with an 8 MHz bandwidth which is intended for digital experiments and DVB amateur television. The contract to build the two transponders was awarded to Mitsubishi Electric (Melco).
Uplinks will be in the 2.400-2.450 GHz range, and downlinks in the 10.450-10.500 GHz Amateur-Satellite Service allocations. Both transponders will be equipped with antennas capable of providing full coverage over about one-third of Earth’s surface. The Qatar Amateur Radio Society and Qatar Satellite Company are cooperating on the Amateur Radio project with AMSAT-DL (German Amateur Radio Satellite organisation) which is providing technical support.
On 28 December 2014 Es’HailSat-2 signed for a launch on Falcon 9, a two-stage rocket designed and manufactured by SpaceX. As the first rocket completely developed in the 21st century, Falcon 9 was designed from the ground up for maximum reliability and made history in 2012 when it delivered Dragon into the correct orbit for rendezvous with the International Space Station. Since then SpaceX has made a total of three flights to the space station, both delivering and returning cargo for NASA. Falcon 9, along with the Dragon spacecraft, was designed from the outset to deliver humans into space and under an agreement with NASA, SpaceX is actively working toward that goal.
Peter Gülzow, President of AMSAT DL providing technical support for the amateur radio payload on Es’Hailsat
“We have built and launched several successful amateur radio satellites and have pioneered new technologies that are today employed in commercial satellite projects,” Peter Gülzow, president of AMSAT DL said. One of the AMSAT DL developments is LEILA-2, a system that analyses the passband of the narrow band transponder and sends a marker tone on all stations that use too much uplink power. There will be two control stations, one in Doha with a back-up at AMSAT DL in Bochum, Germany.
“The idea that using frequencies in the 2 and 10 GHz bands will limit the number of amateurs who will use the transponders because of the perceived high cost of a ground station is ill-founded as many of the components required are readily available on the commercial markets at low cost,” Peter said. The launch is scheduled for December 2016
In the US another amateur radio geostationary project is also taking shape. Researchers at the Ted and Karyn Hume Centre for National Security and Technology are preparing to send an amateur radio transponder into a geosynchronous orbit in 2017. “Seven days a week, 24 hours a day, 365 days a year, a new ham band will be available for the Americas,” said Robert McGwier, research professor in the Bradly Department of Electrical and Computer Engineering and the Hume Centre’s director of research. “It will allow rapid deployment to disaster areas and support long-haul communications for first responders.”
A geosynchronous orbit has the same period as the Earth’s rotation — just under 24 hours. A satellite in such an orbit is easy to locate and access. In this case, the satellite will always be within a band of longitudes over the Americas, continually accessible to radio amateurs, and students and researchers at the Virginia Tech Ground Station.
The satellite itself will be operated by Millennium Space Systems on behalf of the United States Air Force. The Radio Amateur Satellite Corporation (AMSAT) will operate the radio, which will be designed and built by Virginia Tech students — making this project a unique collaboration among the university, non-profit organisations, private companies, and the USA Federal Government.
One of the additional benefits of these two geostationary satellite projects is that new equipment will be developed that is relatively easy to replicate and will not burn a hole in the pockets of radio amateurs. This is perhaps a challenge to the amateur radio fraternity to remain innovative and development focused.
From http://www.aerospace-technology.com .......
Es'hail-2 is a new communication satellite scheduled to be placed into the geostationary transfer orbit in the fourth quarter of 2016. It will be launched aboard the Falcon-9 launch vehicle from Cape Canaveral Air Force Station, Florida, US.
The satellite will be positioned at 26° east orbital position and will provide TV broadcasting and direct-to-home (DTH) services across the Middle East and North Africa. It will be the first Amateur Radio communication satellite in Qatar.
Es'hailSa, a company based in Qatar, is the owner and operator. Es'hail-2 will become Qatar's second communications satellite, following the launch of Es'hail-1 in August 2013.
"Es'hail-2 has a mass of approximately 3,000kg."
Es'hailSat awarded the design and build contract of the satellite to Japan-based satellite manufacturer, Mitsubishi Electric (MELCO) in September 2014.
MELCO will also supply the ground systems and provide the required training under a complete turnkey solution. This makes Mitsubishi the first Japanese satellite supplier to enter Arab's commercial communications satellite market.
Es'hail-2 has a mass of approximately 3,000kg and will have a lifespan of more than 15 years.
The satellite will feature 24 Ku-band and 11 Ka-band transponders to provide direct broadcasting services for television, government and commercial content distribution.
In addition, it will carry two phase four Amateur Radio transponders, which will provide Radio Amateur Satellite Corporation the first geostationary communication capability to directly link Brazil to India in a single hop in real-time. It will also allow the AMSAT community to corroborate and exhibit their digital video broadcasting standard.
Al Yah 3 Communication Satellite, Al Yah 3 is an all Ka-band communications satellite .
Es'hail-2 will be based on the DS2000 satellite bus platform developed by MELCO. The satellite bus handles a broad range of communications payloads and can provide an output of up to 15kW, which is sufficient to power multiple payloads.
Its flexible design suits various payload applications, including hybrid communication payloads, multiple spot-beam broadband communications and meteorological satellites.
The electrical power system includes 100V-regulated dual bus with silicon, multi-junction Gallium arsenide solar array and NiH2 or Li-Ion batteries.
In December 2014, Es'hailSat selected Space Exploration Technologies to launch the satellite. SpaceX will launch the satellite aboard Falcon 9, its own launch vehicle, from SpaceX's launch complex 40 at Cape Canaveral Air Force Station.
Falcon 9 is a two-stage rocket weighing 505,846kg and standing 68.4m tall. It can carry a payload of 13,150kg to LEO and 4,850kg to GTO.
Its first stage features nine Merlin engines and aluminium-lithium alloy tanks carrying liquid oxygen and rocket-grade kerosene (RP-1). It generates 1.3Mlb (million pounds) of thrust at sea level and 1.5Mlb in the vacuum of space.
The second stage incorporates a single Merlin vacuum engine that delivers the payload to the respective orbit. The engine can be restarted multiple times to place different payloads into different orbits.
This stage generates a thrust of 180,000lbf and an intermediate stage between the first and the second holds the release and separation system.
Es'hail 2 will offer direct broadcasting services throughout the Middle East and North Africa, catering to television stations such as Al Jazeera and beIN SPORTS
Mitsubishi Electric has been awarded a contract to deliver the Es' hail 2 communications satellite to Es' hailSat, a satellite operator in Doha. With a design life of more than 15 years, Es' hail 2 will directly broadcast television programs throughout the Middle East and North Africa, serving television stations such as Al Jazeera and beIN SPORTS. From the orbital position of 26 degrees east longitude, its Ku-band and Ka-band capabilities will also provide government communication services and the world's first geostationary amateur radio service.
Client......................Es'hailSat (Qatar satellite company)
Launch date..............Planned in 2016 Q4
Launch Vehicle...........Falcon 9
Launch site...............Cape Canaveral
Orbit.......................Geostationary orbit 26°E
Design life.................More than 15 years
Laut EshailSat Betreiberseite April 2016....
With the success of Es’hail-1 and the growing demand for a range of satellite services in the MENA region, we are currently working on the manufacture of our second satellite Es’hail-2.
Scheduled for launch in Q1 2017, this high-powered, advanced satellite will further boost broadband delivery, broadcasting and global connectivity in Qatar, the entire region and beyond.
Es’hail-2 is being manufactured in Japan by MELCO (Mitsubishi Electric Corporation).
Es’hail-2 will have Ku-band and Ka-band capabilities and support TV distribution, telecoms and government services to strategic stakeholders and commercial customers who value broadcasting independence, interference resilience, quality of service and wide geographical coverage.
The satellite will also provide greater capability for anti-jamming protection and redundancy and back-up for Es’hail-1.
Es’hail-2 will also provide the first Radio Amateur Satellite Corporation (AMSAT) geostationary communication capability that connects users across the visible globe in one single hop and in real-time.
It will allow also the AMSAT community to validate and demonstrate their DVB standard.
Laut AMSAT Deutschland 02.04.2016.
P4-A Frequencies for Narrow (NB) and Wideband (WB) transponder on Es'Hail-2 geostationary satellite to be launched in December 2016.
- 89 cm dishes in rainy areas at EOC like Brazil or Thailand
- 60 cm around coverage peak
- 75 cm dishes at peak -2dB
- NB: linear vertical polarisation
- WB: linear horizontal polarisation
- narrow band modes like SSB, CW
- 5W nominal Uplink power (22.5 dBi antenna gain, 75cm dish)
- RHCP polarisation
S-Band WB-Uplink (DATV):
- wide band modes, DVB-S2
- peak EIRP of 53 dBW (2.4m dish and 100W) required
- RHCP polarisation
Es’hailSat’s Es’hail-2 undergoes vacuum chamber test in Japan
Executives from Qatar’s Es’hailSat and Japan’s Mitsubishi Electric Space Systems (MELCO) gathered in Kamakura, outside of Tokyo, Japan, to observe the vacuum chamber test of Es’hail-2.
MELCO, who were awarded the contract to build Es’hail-2 in 2014, hosted their Qatari clients on 4 June 2016.
Es’hail-2 is based on MELCO’s DS-2000 bus that features highly reliable design and production based upon deep experience derived from participation in more than 280 satellite projects worldwide; capable of providing an output of up to 15 kilo-Watts, satisfying the power requirements for powerful and multiple communications transponders; and flexible design that matches various applications including hybrid communications payloads.
The vacuum chamber test is designed to simulate the harsh conditions of outer space in order to test whether the satellite can withstand the rigours of space operations and function as planned in a variety of environmental conditions. Attending the test was the Es’hailSat Chairman, Dr Hessa Sultan Al Jaber, along with other members of the Es’hailSat board of directors.
Dr. Al Jaber said, “The Es’hail-2 will enhance the strength and importance Es’hailSat, which began to take a pivotal role in the region since the launch of the first satellite, Es’hail-1 in August 2014.”
Es’hail-2 will be launched on a SpaceX Falcon-9 from the Cape Canaveral launch facility in Florida, United States, in the first quarter of 2017.
The Es’hail-2 satellite will be positioned at the 26° East hotspot position for television broadcasting and significantly adds to Es’hailSat’s ability to provide high quality, premium Direct-to-Home (DTH) television content across the Middle East and North Africa. It will feature Ku-band and Ka-band transponders to provide TV distribution and government services to strategic stakeholders and commercial customers who value broadcasting and communications independence, interference resilience, quality of service and wide geographical coverage.
Es’hail 2 will also provide the first Amateur Radio geostationary communication capability linking Brazil and India. It will carry two Phase 4 Amateur Radio transponders.
Executives from Qatar’s Es’hailSat and Japan’s Mitsubishi Electric Space Systems (MELCO), at a MELCO facility in Tokyo, Japan. Photograph courtesy of al-sharq.com
Based on the specification for the wideband uplink (8MHz DVB-S2 requires 100W into 2.4m dish) here are some approximate numbers to get you started,
the bandwidth and dish sizes are in 3dB steps.
Remember DVB-S2 is a couple of dB better than DVB-S
To generate the power required you will need an amplifier capable of about four times that below to get a reasonablly clean Tx spectrum.
Estimated transmission power at different bandwidths and dish sizes....... for DATV.
Es'hail-2 will be located at 26°E.
Check your visibility here:
13cm UP Converter for SSB-CW and DATV
you find more information here: viewtopic.php?f=7&t=284&start=150#p2045
Version 1 ...... only PCB ready for use, available for 119,00 US$
Version 2 ...... PCB ready for use, in housing with heatsink, available for 169,00 US$
Order ?..... Please ask firstname.lastname@example.org
In order to promote and foster space technology development in Qatar, Es’hailSat has initiated the development of new technology for the Qatar Amateur Radio Society.
With the provision of two transponders on the Es’hail-2 satellite for an Amateur Satellite Radio payload, this ground-breaking project is expected to provide an exciting new phase of activity for radio amateurs in the 21st century.
Es’hail-2 will provide the first Radio Amateur Satellite Corporation (AMSAT) geostationary communication capability that connects users across the visible globe in one single hop and in real-time. It will allow also the AMSAT community to validate and demonstrate their DVB standard.
Es'hail-2 is a Mitsubshi Electric Corporation satellite scheduled for launch in Q1 2017
Satellite Launches - 2017
AMSAT-UK International Space Colloquium 2016
Thema NB transponder: https://www.youtube.com/watch?v=2okoSmG ... 2&index=22
Thema WB transponder: https://www.youtube.com/watch?v=hnALEzG ... ZmCHcC2ZG2
https://www.youtube.com/watch?v=392RvHj ... ZmCHcC2ZG2
Es'hail-2 re-scheduled for launch in Q3 2017
We have been informed by Es'hailSat Qatar Satellite company, that the launch of Es'hail-2 with the first P4-A geostationary amateur radio transponder is shifted to Q3/2017.
The announcement is available on the corporate Es'hailSat website at https://www.eshailsat.qa/en/satellites/index/
https://www.facebook.com/EshailSat/vide ... =2&theater