Amateur Satellite 5.7 GHz LNA

AMSAT-NA 5.7 GHz LNA

AMSAT-NA 5.7 GHz LNA

The AMSAT-NA site carries a picture showing the mechanical prototype of the 5.7 GHz Low Noise Amplifier which will be used in the Phase 5 Lunar and Phase 4B Geosynchronous amateur radio satellite projects.

Unfortunately US Federal Government ITAR legislation prevents them disclosing any technical information about it.

The International Traffic in Arms Regulations (ITAR) inexplicably applies to amateur radio satellites. It threatens US radio amateurs with jail terms or six figure fines if they cooperate with amateurs outside the USA on satellite projects. Cooperation includes talking about or publishing on the web certain information regarding amateur radio satellite systems.

The AMSAT-NA 5.7 GHz LNA page can be seen at http://www.amsat.org/?p=5519

5 GHz / 10 GHz amateur radio transponders are planned for the Heimdallr spacecraft expected to launch in September 2018 into a Lunar orbit. Further information is at
https://amsat-uk.org/2016/09/07/5-ghz-to-10-ghz-lunar-transponder-mission/

ITAR – Section 1248 Report Released
https://amsat-uk.org/2012/04/22/itar-1248-report-released/

AMSAT Wants Amateur Radio Satellites Off US Munitions List
https://amsat-uk.org/2013/07/31/amsat-wants-amateur-radio-satellites-off-us-munitions-list/

University students shown amateur radio

VHF demonstration by Rajesh Vagadia VU2EXP

VHF demonstration by Rajesh Vagadia VU2EXP

AMSAT-India Regional Coordinator Rajesh Vagadia VU2EXP reports on the ‘Ham Radio – Practical Insight’ session given to 150 students at Parul University.

Wonderful hands on session on ‘Ham Radio – Practical Insight’ was conducted at prestigious Parul University – Baroda (Gujarat, India) on September 8, 2016. Around 150 Engineering (EC) student & faculties participated in the program & gain knowledge on the subject.

Faculty member making a 145 MHz FM contact

Faculty member making a 145 MHz FM contact

In-depth Presentation on Ham Radio, Interesting Ham Radio Events, Video Documentary & SSTV Live demo was carried out by Rajesh Vagadia VU2EXP. Students were excited to see line by line SSTV transmission on the projected screen. To learn with fun, students were allowed to make collective noise during transmission to observe their effect in the SSTV reception!!!

Number of technical & general queries satisfied in Q&A session. Sunny VU2PMU Shared his Ham Experience & Sardool VU2OPX Selected few student with small Quiz.

VHF Demo (Modulation test) was nicely carried out by GIAR team member Ankit VU3NMQ, Sardool VU2OPX, Sunny VU2PMU & myself. Student & faculties learnt the potential of Ham Radio hobby & enjoyed the event at the fullest.

I thank my fellow hams for their kind support and also thankful to Prof. Jay Patel & Prof. Niraj Tever from Parul University to nicely coordinate the event.

Wish this Ham event act as small SPARK (ignition) & in future some of the student may fly high in World of Amateur Radio!

Thanks & 73’s

VU2EXP
Rajesh P. Vagadia – (Rajkot – INDIA)
Regional Coordinator
West India Zone
AMSAT-India http://amsatindia.org/

Some of the students at Ham Radio Practical Insight session at Parul University

Some of the students at Ham Radio Practical Insight session at Parul University

Amateur Space Communication Talks at RSGB Convention

Professor Cathryn Mitchell M0IBG University of Bath

Professor Cathryn Mitchell M0IBG University of Bath

There is an impressive line-up of speakers for the RSGB Convention, taking place in Milton Keynes Oct 7-9, and amateur space communications feature prominently.

Presentations during the weekend include:
• Sat 10:45 The new world of amateur satellites by Graham Shirville G3VZV
• Sat 12:00 Try amateur satellites by Peter Goodhall 2E0SQL
• Sat 14:40 Inspiring the next STEM generation 10 amateur radio contacts with Tim Peake GB1SS by Ciaran Morgan M0TXD & Susan Buckle UK Space Agency
• Sat 15:45 Making the Tim Peake GB1SS contacts a reality by Graham Shirville G3VZV & Noel Matthews G8GTZ
• Sun 13:30 Space Weather by Prof. Cathryn Mitchell M0IBG

The full schedule and booking information are available on the RSGB Convention page at http://rsgb.org/convention

Twitter #RSGBconv2016

Pratham student satellite

SolidWorks rendering of the Pratham satellite - Credit IIT Bombay

SolidWorks rendering of the Pratham satellite – Credit IIT Bombay

The satellite Pratham built by students at the Indian Institute of Technology Bombay is expected to launch on the Indian PSLV-C35 mission planned for 0342 UT on Monday, September 26, 2016.

Pratham, a 300x300x300mm satellite with a mass of 10 kg, aims to measure total electron count in a 800 km altitude Sun Synchronous Orbit (SSO).

Aayush Yadav of the Pratham team writes:

We, students of IIT Bombay, are glad to inform you that our project, Pratham, is ready and expected to launch with PSLV-C35. We would be really happy if  you all joined us in receiving our satellite’s beacon, details given below:

The beacon is estimated to switch on in the window of 25-30 degrees North and 4-8 degrees East as per the current TLE’s. Once switched on, it will remain so through out it’s orbit. The telemetry data will be switched on only over Europe (France) and India because of our power constraints. If you could, please receive the beacon and/or telemetry of the satellite and report back to the mail id’s as given below. The information for the satellite transmissions is given below,

Beacon:
Frequency: 145.980 MHz
Modulation: CW
Words per minute: 30
Power Emitted: 0.2 W (23 dBm)

Telemetry: To be switched on only over India and Europe (France)
Frequency: 437.455 MHz
Modulation: FSK
Rate: 1200 bps
Power Emitted: 0.06 W (18 dBm)

Pratham Initial KEPS / TLE 
1 99999U 16005A  16270.24769735  .00000368  00000-0  70534-4 0  1235
2 99999 98.2056 327.8012 0027951 267.5222 9.4278 14.63691895 13

Kind Regards.
Team Pratham

Further information at http://www.aero.iitb.ac.in/pratham/

Facebook https://www.facebook.com/iitb.student.satellite/

Twitter https://twitter.com/SatlabIITB

5 GHz to 10 GHz Lunar Transponder Mission

View of Earth from the Moon AdobeStock_77398324AMSAT-NA plans 5 GHz to 10 GHz transponders on a spacecraft expected to launch in September 2018 into a Lunar orbit.

Heimdallr is a 3 axis stabilized 6U CubeSat with a mass of approximately 8 kg. It will have a Cold Gas Thruster for inertia dump and a star tracker for navigation. Deployable, gimbled solar panels will produce up to 100 watts of DC power, electric propulsion will be used to achieve lunar orbit.

There will be a combination of omni and directional patch antennas on one side of spacecraft.

The first part of mission is to provide Telemetry, Tracking, and Command (TT&C) to obtain lunar orbit. The second part is to perform the data downlink experiment while the final part is to provide a two way regenerative repeater and analog repeater in lunar orbit for lifetime of satellite.

Proposing these downlinks:
• Omni transponder: 10.451 GHz +/- 0.5 MHz
• Directional transponder: 10.4575 GHz. +/- 3.5 MHz
• Analog transponder: 10.4665 GHz. +/- 2.0 MHz

For the first part of the mission (TT&C) using 300 bps BPSK 1/2 rate viterbi Ranging 1.5 Mbps BPSK DSSS. For the  second part of mission 4.5 Mbps QPSK ½ rate DVB-S2. For the final part of mission 25 kbps BPSK 1/5 rate DVB-S2.

Proposing these Uplinks
• Omni transponder: 5.651 GHz +/- 0.5 MHz
• Directional transponder: 5.6575 GHz. +/- 3.5 MHz
• Analog transponder: 5.665 GHz. +/- 2.0 MHz

A link budget is available at
https://drive.google.com/folderview?id=0B3u-mSOWBMISYnZyZGJpeThKeU0&usp=sharing

It is anticipated that a 1 or 2 metre dish will be required using the AMSAT designed ground station equipment.

Source IARU Satellite Frequency Coordination Status pages http://www.amsat.org.uk/iaru/

Heimdallr satellite – 5 Teams Share First Round of NASA CubeSat Prizes
http://spacenews.com/5-teams-share-first-round-of-nasa-cubesat-prizes/

 

Amateur Satellites at BATC Convention Sept 24-25

BATC Logo SmallCAT 16, the British Amateur Television Club (BATC) Convention at Cosford in Shropshire Sat/Sun Sept 24/25 will be streamed live.

The talks program and agenda for the weekend has now been published and amateur space communications feature in the schedule, highlights include:

• Es’hailSat-2: Geostationary transponder for DATV – Graham G3VZV
• Receiving and Presenting HamTV from the ISS – Noel G8GTZ
• New BATC Streamer and Internet Presence – Phil M0DNY
• DATV Express and Future Developments – Charles G4GUO
• 146 MHz Reduced Bandwidth TV: A Practical Operators Guide – Shaun G8VPG
• MinitiounePro and Developments – Jean-Pierre F6DZP

The full program is at http://www.batc.org.uk/forum/viewtopic.php?f=99&t=4569

BATC CAT16 live streaming starts 1300 BST Saturday https://beta.batc.tv/live/cat16

Please also remember that the BATC Biennial General Meeting is at 1:30 pm on the Sunday.  The Agenda is at http://www.batc.org.uk/GM2016agenda.pdf

All this in a venue with many other interesting exhibits.
See more at http://www.rafmuseum.org.uk/cosford/
A guided tour will be available for those who have pre-booked.

Please register your intention to attend (and request a guided tour) using the BATC Shop (no charge at this stage, but £10/day on arrival).  Click here https://batc.org.uk/shop/cat16 and select cash payment of £0.00.

Lastly, we are  pleased to announce that Graham Shirville, G3VZV, has been chosen as the next President of the British Amateur Television Club (BATC).  He succeeds Peter Blakeborough, G3PYB, who died last December.  The appointment is for two years.

Looking forward to seeing you all at CAT16.

73 The BATC Team http://www.batc.tv/

The book – Getting Started with Amateur Satellites – is now available from the AMSAT-UK shop at http://shop.amsat-uk.org/