New Geostationary Transponders

Es'hail-2 coverage from 26 degrees EastThe AMSAT-UK International Space Colloquium at the Holiday Inn, Guildford will hear presentations from Peter Gülzow DB2OS and Achim Vollhardt DH2VA on the new geostationary amateur radio satellite transponders currently planned to launch in the 3rd quarter of 2017.

The two transponders will provide SSB, Digimode, CW and Digital Amateur TV communications between five continents.

On Saturday, July 30 Peter Gülzow DB2OS will talk about the Phase 4A flight segment while Achim Vollhardt DH2VA will describe the ground station requirements.

The event over the weekend of July 30-31 is open to all, admittance is £10 per day, car parking is free. Those wishing to find out about amateur space communications are most welcome to attend.

Phase-4A Geostationary Transponders https://amsat-uk.org/2016/06/24/phase-4a-geostationary-transponders/

Further information on the event at https://amsat-uk.org/colloquium/

Phase-4A Geostationary Transponders

Es'hail-2 coverage from 26 degrees EastEs’hail 2 is a geostationary satellite which will carry two amateur radio transponders.

The launch of the Es’Hail-2 satellite into a geostationary orbit is currently planned for the 3rd quarter of 2017. The coverage area of the Narrowband (NB) and Wideband (WB) transponders should extend from Brazil to Thailand.

The two “Phase 4” amateur radio non-inverting transponders will operate in the 2400 MHz and 10450 MHz bands. A 250 kHz bandwidth linear transponder is intended for conventional analogue operations and an 8 MHz bandwidth transponder for experimental digital modulation schemes and DVB amateur television.

Narrowband Linear transponder
 2400.050 -  2400.300 MHz Uplink Right Hand Circular Polarization
10489.550 - 10489.800 MHz Downlink Vertical Polarization

Wideband digital transponder
 2401.500 -  2409.500 MHz Uplink Right Hand Circular Polarization
10491.000 - 10499.000 MHz Downlink Horizontal Polarization

Download the Eshail-2 P4-A Amateur Radio Leaflet 2016-06-24

A LEILA-2 system, similar to LEILA flown on AMSAT OSCAR-40 (P3-D) will be used for Traffic Control and Telemetry Beacons. The mayor difference is, that this is a ground-based system which will be installed at the Es’hailSat Satellite Control Center (SCC) near Doha in Qatar.

LEILA-2 will analyze the downlink power levels in the passband of the NB-transponder and automatically generate a Siren to remark users to decrease their uplink power.

LEILA-2 is a joint development of AMSAT-DL’s Achim Vollhardt DH2VA and AMSAT-UK’s Howard Long G6LVB.

LEILA is an German acronym for “LEIstungs Limit Anzeige”, which means: Power Limit Indicator.

The following video gives a first insight to the Es’hail-2 LEILA-2 hardware concept

Watch Es’hail 2 AMSAT-DL LEILA 2 Transponder

Es’Hail-2 Geostationary P4-A Transponder Frequencies

Es'Hail-2 Geostationary P4-A Transponder Frequencies

Es’Hail-2 Geostationary P4-A Transponder Frequencies

The launch of the Es’Hail-2 satellite into a geostationary orbit at 25.5 degrees East is planned for the 3rd quarter of 2017. The coverage area of the amateur radio Narrowband (NB) and Wideband (WB) transponders should extend from Brazil to Thailand.

Es'hail-2 coverage area

Es’hail-2 coverage area

Es’hail 2 will carry two “Phase 4” amateur radio non-inverting transponders operating in the 2400 MHz and 10450 MHz bands. A 250 kHz bandwidth linear transponder intended for conventional analogue operations and an 8 MHz bandwidth transponder for experimental digital modulation schemes and DVB amateur television.

Narrowband Linear transponder
 2400.050 -  2400.300 MHz Uplink
10489.550 - 10489.800 MHz Downlink

Wideband digital transponder
 2401.500 -  2409.500 MHz Uplink
10491.000 - 10499.000 MHz Downlink

Equipment requirements:

X-Band 10 GHz Downlink:
– 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

S-Band 2.4 GHz NB-Uplink:
– narrow band modes like SSB, CW
– 5W nominal Uplink power (22.5 dBi antenna gain, 75cm dish)
– RHCP polarisation

S-Band 2.4 GHz WB-Uplink (DATV):
– wide band modes, DVB-S2
– peak EIRP of 53 dBW (2.4m dish and 100W) required
– RHCP polarisation

Presentation on Es’hail by Peter Guelzow DB2OS, President of AMSAT-DL, at the 2013 AMSAT-UK Colloquium http://www.batc.tv/streams/amsat1306

Geostationary / Geosynchronous ham radio satellite transponders

Possible coverage of Geosynchronous satellite 74 degrees West - Credit Bill Reed NX5R

Possible coverage of a Geosynchronous satellite at 74 degrees West – Credit NX5R

EngineerIT magazine reports on the quest by radio amateurs to get transponders on geostationary satellites.

Coverage area of Es'hail 2

Coverage area of Es’hail 2

The article quotes President of AMSAT DL, Peter Gülzow DB2OS, and describes the transponders planned for the Es’Hail-2 satellite, expected to be launched in the 3rd quarter of 2017 into a geostationary orbit at 26 degrees East.

Also mentioned is a project to build a transponder for a US satellite which could be in a geosynchronous orbit around 74 degrees West.

Read the EngineerIT article at
http://www.ee.co.za/article/radio-amateurs-quest-geostationary-satellites.html

What is a Geosynchronous orbit ? https://amsat-uk.org/satellites/geosynchronous/

Es’Hail-2 https://amsat-uk.org/satellites/geosynchronous/eshail-2/

AMSAT Phase 4 Update for Palomar Amateur Radio Club November 4, 2015
http://www.ntms.org/files/Feb2016/PARC_4on4.pdf
https://amsat-uk.org/2015/11/08/geosynchronous-ham-radio-project-video/

Fox-1 launch 2015 and Geosynchronous Sat on 5 and 10 GHz 2017

Millennium Space Systems AQUILA M8 Series Satellite Structure

Millennium Space Systems AQUILA M8 Series Satellite Structure

ARRL Publications Manager and QST Editor Steve Ford, WB8IMY, reports on Amateur Satellite news from the Dayton Hamvention.

AMSAT FOXThe ARRL website reports the launch of the Fox-1 CubeSat has been delayed until October 8, 2015. Fox-1 will carry a 435/145 MHz FM Voice Transponder, see http://www.amsat.org/?page_id=1113

The ARRL story continues: AMSAT Vice President-Engineering Jerry Buxton, N0JY, said that a geosynchronous satellite, planned to launch in 2017, will offer uplinks on 5 GHz and downlinks on 10 GHz.

Buxton explained that the geosynchronous footprint will not be absolutely fixed; some variation may require some up/down movement of the user’s dish at certain times — although not continuously. He said AMSAT is working on this issue in terms of what to recommend for ground stations, but that even in the worst case, a user with a fixed antenna would still be able to enjoy several hours of access each day.

The transponder for the new satellite will be software defined and capable of supporting many different modes, including analog SSB.

AMSAT announced in late April that, if all goes according to plan, an Amateur Radio payload will go into space on a geosynchronous satellite that’s planned for launch in 2017. The satellite’s potential footprint could extend over the US from the Mid-Pacific to Africa. AMSAT has accepted the opportunity to be a “hosted payload” on a spacecraft that Millennium Space Systems (MSS) of El Segundo, California, is under contract to design, launch, and operate for the US government. The Amateur Radio payload must be delivered for testing and integration by next spring.

Source http://www.arrl.org/news/dayton-hamvention-2015-day-1-big-crowd-some-rain-satellite-news

A graphic showing an example of a typical Geosynchronous orbit can be seen at
http://www3.sympatico.ca/n.rieck/docs/sirius.html

 The 2.325 GHz signals from the Sirius satellites in Geosynchronous orbit over North America have been received in the UK.

AMSAT-NA Opportunity for Rideshare to Geostationary Orbit

Millennium Space Systems AQUILA M8 Series Satellite Structure

Millennium Space Systems AQUILA M8 Series Satellite Structure

AMSAT is excited to announce that we have accepted an opportunity to participate in a potential rideshare as a hosted payload on a geostationary satellite planned for launch in 2017.

An amateur radio payload, operating in the Amateur Satellite Service, will fly on a spacecraft which Millennium Space Systems (MSS) of El Segundo, CA is contracted to design, launch, and operate for the US government based on their Aquila M8 Series Satellite Structure.

A meeting to discuss this potential rideshare took place on April 13 at Millennium Space Systems that included Dr. Bob McGwier, N4HY; Franklin Antonio, N6NKF, co-founder of Qualcomm; Jerry Buxton, N0JY, AMSAT Vice President of Engineering and member of the board for AMSAT-NA; Dr. Tom Clark, K3IO, Director and President Emeritus of AMSAT-NA; Phil Karn, KA9Q; and Michelle Thompson, W5NYV.

Hosting the meeting for MSS were Stan Dubyn as founder and chairman of MSS, Vince Deno as president of MSS, Jeff Ward, K8KA, of MSS as VP for Product Development, formerly with SSTL and University of Surrey Space Center, and Ryan Lawrence of MSS as Project Manager on the spacecraft mission. Attending by telephone were Dr. Jonathan Black, Associate Research Director of Hume Center for Aerospace Systems and Associate Professor of Aerospace and Ocean Engineering and Dr. Michael Parker, KT7D, founder of RINCON Research Corp.

Following the meeting, Dr. Bob McGwier, N4HY, Director of Research at the Hume Center for National Security and Technology of Virginia Tech, and former director and former VP Engineering of AMSAT, described this as an opportunity to go forward with “AMSAT-Eagle” which, in the 2006-2008 timeframe, evolved into a microwave payload to be flown to geostationary orbit as a hosted payload. It would have provided digital communications to small terminals on the ground and a linear bent pipe transponder had it flown. This failed to go forward in part due to lack of an affordable flight opportunity.

McGwier outlined the next steps toward developing this mission:

1) To organize an effort at Virginia Tech to make a firm proposal to MSS and its US government sponsor, and organize an effort to raise sufficient funds to pay for development of the mission.

2) Enable Dr. Jonathan Black to lead the construction project at Virginia Tech in the Space@VT Center. Sonya Rowe, KK4NLO, Project Manager at the Hume Center will be the project manager.

3) Work for development of a low-cost microwave ground station for amateur radio still needs to be determined.

4) Dr. Michael Parker, KT7D, will  solicit the cooperation of the Rincon Research Corp. for development of the software radio
technology for this payload.

The AMSAT Board of Directors has accepted the invitation to participate in this potential rideshare payload opportunity. AMSAT expects to be involved in the development of the ground station and the payload RF development, and will serve as the amateur radio (hosted) payload operator once the satellite has been launched.

McGwier summarized, “The launch is currently scheduled for 2017 and the payload must be delivered for testing and integration by Spring of 2016. It is an ambitious schedule and all involved will have to gain and maintain a serious level of commitment to that which they agree to undertake.” AMSAT President, Barry Baines, WD4ASW, said, “The AMSAT leadership is excited to fly a Phase-IV geostationary amateur satellite payload. This is an evolving development as we collaborate with the VT Hume Center with a project that provides technical challenges to create a new amateur radio capability in space that will provide a variety of benefits not only for amateurs but also for emergency communications and STEM educational outreach.”

The transponder is expected to support a wide range of voice, digital, and experimental advanced communications technologies. A decision is expected soon specifying the microwave uplink and downlink bands.

Additional information on the Aquila M8 Series Satellite can be viewed on-line:
http://www.millennium-space.com/
http://www.millennium-space.com/platforms#aquila

AMSAT has posted a photo of the GEO opportunity team with the Millennium Aquila satellite at http://www.amsat.org

[ANS thanks Bob McGwier, N4HY and AMSAT-NA for the above information]