4M lunar ham radio payload shipped

4M payload under test

4M payload under test

Ghislain Ruy LX2RG reports the 4M Lunar flyby amateur radio payload was shipped on Thursday, October 2 and he departs for the Xichang Satellite Launch Center on Sunday, October 5.

He says the lifetime of 4M is quite an unknown: it may be as short as 100 hours (so at least to the Moon) and could extend for some weeks if the attitude is favorable.

It is now known that the spacecraft will not re-enter the Earth atmosphere after the flyby but instead enter a wonderful orbit. You will find information animations and some JT65B test files at

https://cloud.luxspace.lu/public.php?service=files&t=33c4a21c09ba3736a55fc09896e463f6

The launch will be transmitted by CNTV/CCTV: http://www.cntv.cn/ or http://english.cntv.cn/ or http://english.cntv.cn/live/p2p/index.shtml

LX2RG says the team are setting up their ground station, and are especially looking for southern hemisphere stations: ZS, VK and ZL, Southern America continent mainly, as they will be placed first hand for the early hours.

Launched is planned in a narrow window at 17:59:xx UTC on October 23 and flyby is to occur nominally on October 28 at 00:33 UTC.

4M is planned to start transmissions at 19:17 UTC, possibly with 10 minutes additional delay.

K1JT has developed a special version of WSJT. In addition of all the features of the standard version, it includes also the display and logging of the dT to three decimal places and the logging of the manual offset that can be entered in JT65B modes. This version should be used by all who wants to participate to the ‘Multilateration’ experiment.

The participant to this experiment should also make sure that the clock of their PC stays synchronized to the UTC time. Desired accuracy should be within 1ms and within 10ms at the very least. Use of NTP synchronizing software is a must.

The special version can be downloaded with the following links:
http://physics.princeton.edu/pulsar/K1JT/WSJT_10.0r4336a.exe
https://cloud.luxspace.lu/public.php?service=files&t=2720825f74104b31ebd699dcc0fd6268

The LuxSpace ground station comprises 2 x 8 element crossed Yagis from Joachims antenna (with an improved design to lower the back lobe), a SSB.de LNA and Yaesu antenna rotators.

Best regards.

Ghislain Ruy LX2RG
Email ruy@luxspace.lu with “4M Amateur” in the subject

Read the paper 4M Mission: a Lunar FlyBy experiment
http://tinyurl.com/4M-Mission-V3

EME 2014 slides: 4M, A Moon Flyby Mission
http://tinyurl.com/4M-slides-eme2014

Manfred Memorial Moon Mission (4M) http://moon.luxspace.lu/

4M-LXS Lunar amateur radio payload
https://amsat-uk.org/2014/09/01/4m-lunar-payload/

Send your message “from the Moon”

4M payload under test

4M payload under test

The LuxSpace 4M amateur radio payload is expected to fly around the Moon at the end of October and you can upload a message to the 4M website that will be transmitted on 145.980 MHz using JT65B during the flight.

Full Moon 2010 - Credit Gregory H Revera

Full Moon 2010 – Credit Gregory H Revera

There is room for 2500 messages each up to 13 characters long. Your message could be your name/callsign or “73 de M5AKA”.

During the lunar flyby, the spacecraft will be about 399,636 km from Earth. The LuxSpace team wish to encourage radio amateurs around the world to receive the transmissions and send in data. There will be a number of Experiments and Contests with prizes to the winners in each experiment and category. Details are given on page 19 of 4M Mission: a Lunar FlyBy experiment.

4M stands for Manfred Memorial Moon Mission in memory of Professor Manfred Fuchs, founder and chairman of OHB group, Bremen who passed away on April 27, 2014.

Register and Upload your message at http://moon.luxspace.lu/messages/

4M Mission: a Lunar FlyBy experiment
https://ukamsat.files.wordpress.com/2014/09/lxs-4m-eme2014-a4-v3.pdf

Further information on this project is at https://amsat-uk.org/2014/09/01/4m-lunar-payload/

4M-LXS Lunar amateur radio payload

4M payload under test

4M payload under test- Credit LuxSpace

Beijing plans to launch a Lunar spacecraft on a journey lasting 196 hours that should take it around the Moon before returning and re-entering the Earth’s atmosphere. It will carry a 14 kg payload known as 4M-LXS which was developed at LuxSpace. The launch is expected to take place on October 23, 2014 at 1800 UT.

4M stands for Manfred Memorial Moon Mission in memory of Professor Manfred Fuchs, founder and chairman of OHB group, Bremen who passed away on April 27, 2014.

Full Moon 2010 - Credit Gregory H Revera

Full Moon 2010 – Credit Gregory H Revera

The 4M-LXS amateur radio payload will transmit on 145.980 MHz +/- 2.9kHz (-40°C to +125°C), Doppler max: -2200Hz, +1000Hz. The continuous transmissions will start 4670s (77.8 minutes) after launch (-0, +600s). Five successive 1 minute sequences are sent during the 5 minutes cycle. The digital mode JT65B will be used, this can be decoded by radio amateurs using the free WJST software, there will also be ‘human readable’ tone transmissions. See the transmit sequence description on page 14 of 4M Mission: a Lunar FlyBy experiment.

During the lunar flyby, the range will be 399,636 km at the most and the distance to the Moon will be between 12,000 and 24,000 km depending on the final injection vector. The transmitter produces 1.5 watts to a simple Monopole antenna which should give a Signal to Noise ratio ( S/N) comparable to amateur moon bounce (EME) signals at the Earth’s surface.

LuxSpace wish to encourage radio amateurs around the world to receive the transmissions and send in data. There will be a number of Experiments and Contests with prizes to the winners in each experiment and category. Details are given on page 19 of 4M Mission: a Lunar FlyBy experiment.

A Java client will be made available to automatically send the WSJT ALL.TXT and the decoded.txt files to a central database.

Delivery convoy - Image credit Xinhua

Delivery convoy – Image credit Xinhua

The orbiter is one of the test models for Beijing’s new lunar probe Chang’e-5, which will be tasked with landing on the moon, collecting samples and returning to Earth. The launch is aimed at testing the technologies that are vital for the success of Chang’e-5. The orbiter will be launched into Lunar Transfer Orbit (LTO) then will perform a flyby around the Moon and re-enter the Earth’s atmosphere after 196 hours (9 days).

The orbiter arrived by air in Xichang, Sichuan on Sunday, August 10 and was then transported to the Xichang Satellite Launch Center.

Read the paper 4M Mission: a Lunar FlyBy experiment

EME 2014 slides: 4M, A Moon Flyby Mission

Manfred Memorial Moon Mission (4M) http://moon.luxspace.lu/

LuxSpace Sarl on Facebook https://www.facebook.com/LuxSpaceSarl

Downloads https://cloud.luxspace.lu/public.php?service=files&t=33c4a21c09ba3736a55fc09896e463f6

The launch will be transmitted by CNTV/CCTV: http://www.cntv.cn/ or http://english.cntv.cn/ or http://english.cntv.cn/live/p2p/index.shtml

Beijing to test recoverable moon orbiter
http://news.xinhuanet.com/english/china/2014-08/10/c_133546027.htm

IARU Satellite Frequency Coordination Pages http://amsat.org.uk/iaru

Free WSJT Software http://physics.princeton.edu/pulsar/K1JT/

OHB mourning the loss of its founder Manfred Fuchs
http://globenewswire.com/news-release/2014/04/28/630464/0/en/DGAP-News-OHB-AG-OHB-mourning-the-loss-of-its-founder-Manfred-Fuchs.html

4M Payload - credit LuxSpace

4M Payload – Credit LuxSpace