Amateur radio satellites launch on SpaceX STP-2 mission

Falcon Heavy STP-2 - credit SpaceX

Falcon Heavy STP-2 – credit SpaceX

Amateur radio satellites are expected to be launched between 0330-0730 GMT on June 25, 2019 on SpaceX Falcon Heavy STP-2 from LC-39A, Kennedy Space Center, Florida.

Among the satellites (see links for IARU coordinated frequencies) are:

• Prox 1 ( Nanosat 7)
• LightSail B – (Deploying from Prox 1)
• PSat-2
• BRICSat-2
• CP-9
• Oculus-ASR
• E-TBEx-a
• E-TBEx-b

144 and 1240 MHz Bands – RSGB information

RSGB volunteers continue to be engaged with IARU and Ofcom on WRC matters including the 144 MHz and 1240 MHz bands as well as WRC-19 Agenda Items in CEPT-PTD (50 MHz, WPT, 5GHz) and CEPT-PT1 (24/47 GHz).

At UK level, RSGB are members of the Ofcom IFPG groups that consider these matters.

The RSGB has updated their special focus page with the latest documents and CEPT meeting minutes. See Proposed WRC-23 Agenda Items at

June 21 – RSGB Update on 144MHz and 1240 MHz band threats


CEPT Project Team A, responsible for some aspects of the CEPT position for WRC-19, met in Prague from June 17-21. The meeting minutes are available for download

Regarding the 1240-1300 MHz band the minutes say:

The representative of the European Commission (EC) stated that, RNSS systems are global by nature, and that the radio amateur service is allocated in all regions. Once RNSS receivers (including Galileo E6 receivers) are deployed ubiquitously, the number of interference cases coming from radio amateur emissions will increase significantly and represent an important burden to Administrations, unless clear guidelines are available in order to drive the amateur community towards an appropriate usage of their allocation.

For these reasons, the EC believes that the French proposal of a WRC-23 agenda item is essential in order to complement the work being started within CEPT, and to find a sustainable solution for all parties. Also, the EC considers that WRC-23 is the right time for a decision enabling the better regulation of the RNSS-amateur coexistence at international level, as Galileo will start providing freely available high accuracy services in the 1260-1300 MHz band on a global basis from 2020.

The EC noted that some of the 7 Administrations which objected to the French contribution are open to consider a revised version of the proposal, and therefore believes that relevant support may be achievable at CPG level, following further discussions until end August.

Regarding the 144 MHz band the minutes say:

The representative of the IARU stated that, the IARU views with grave concern the element of the WRC-23 agenda item proposal 1.6 in the AI10 ECP, on studies towards a possible new allocation to the aeronautical mobile service in the band 144-146 MHz. This band is an important and the only globally harmonised primary allocation to the amateur and amateur satellite services in the VHF range. Examination of the RR below and above the 144-146 MHz range suggests that alternative proposals could be developed that could provide further spectrum for the aeronautical applications without impacting on this amateur service spectrum. The proposal provides no justification for addressing this band and the IARU believes that sharing with airborne systems is likely to be difficult and will lead to constraints on the development of the amateur and amateur satellite services in this band.

Meeting minutes

See the WRC-23 Agenda Items update issued by IARU Region 1 June 21

Some background on previous CEPT WGFM and CPG/PTA discussions on the 1240-1300 MHz band

16-year-old ham radio satellite builder in the press

FossaSat-1 PocketQube Satellite

FossaSat-1 PocketQube Satellite

16-year-old radio amateur Julián Fernández EA4HCD was interviewed by the newspaper El Mundo Chronicle about his FossaSat-1 PocketQube satellite.

A Google translation of an extract of the article says:

…at the age of seven someone told him about the International Space Station and, since then, he has not stopped fantasizing about the idea of a voyage safe from gravity. “Unlike the children of previous generations who dreamed of being astronauts without knowing very well how to get it, I have grown up with all the information at my fingertips,” he tells Crónica.”

Now Julián Fernández [EA4HCD], already as CEO of Fossa Systems, has just launched a crowdfunding campaign through GoFundMe with which he intends to finance his latest talent: a mini-satellite (the smallest in Spain and the third in the world) that will allow the Internet access throughout the world. “It is not designed to provide Wi-Fi hotspots,” jokes this student of 4th of ESO, “but to try to democratize access to telecommunications in the environment of the internet of things.” To meet its objective, and in order to reduce launch costs, the last two years have been devoted to miniaturizing the size of the satellite. “My prototype will take the internet to rural areas, many of them without coverage of any kind, so that monitoring data can be sent at no cost”.

Read the English version of the full article at

The Fossa team is made up of international members from all over the world working together thanks to the magic of the internet

The IARU have coordinated a frequency of 436.700 MHz for the 100 mW downlink which is capable of 183 Hz Shift FSK RTTY 45 baud ITA2 and LoRa 125 kHz B/W 180 bps, details at

The ITU API/A is available here.

Fossa say they have signed a orbital launch contract with UK company Alba Orbital and a launch on a Electron rocket is expected in the 4th quarter of 2019

144 and 1240 MHz bands – WRC-23 Agenda Items – Update

IARU was represented at the meeting of CEPT Project Team A (responsible for some aspects of the CEPT position for WRC-19), held in Prague from June 17-21.

The IARU Region 1 website reports:

Of particular interest were discussions on two proposed Agenda items for WRC-23, concerning the sharing of the 1240-1300 MHz band with the Galileo navigation system and the proposal from France to study a range of frequencies, including the 144 MHz amateur band, for future aeronautical applications.

The output from PTA does not carry forward the Galileo proposal, but it is likely that further discussions will take place prior to the Conference Preparatory Group meeting in August. Meantime work on this issue will also continue in other specialist CEPT forums. IARU will continue to support this approach and it believes this will be the most efficient method for developing the sharing guidance required to protect Galileo operations in a timely manner.

Regarding new aeronautical frequencies (including 144-146 MHz), the proposal was not strongly opposed by administrations and has been carried forward to the higher level CEPT Conference Preparatory Group (CPG) meeting in August for final adoption.

IARU views with grave concern any proposal to include the 144 MHz band in the proposed aeronautical agenda item and will be making every effort to fully protect amateur radio interests and seek the support of regulators in this regard.

The band 144-146 MHz is allocated globally to the amateur and amateur satellite services on a primary basis. It is the only globally harmonised VHF band for the amateur and amateur satellite service. As such it is an important and widely used part of the amateur spectrum with a vast installed base of both terrestrial/maritime amateur users and systems and operational satellite stations including the International Space Station (ISS).

This heavily used band supports a large number of repeater stations, segments for weak-signal long distance terrestrial and EME (Earth-Moon-Earth) communications, satellite and ISS usage, data services, as well as conventional terrestrial and tropospheric communications. The Primary status of the band has also enabled a number of amateur aeronautical uses including on manned flights and high-altitude balloons. Supporting all of this is a wide variety of commercial and experimental equipment, ranging from ultra-low noise preamplifiers for sensitive receivers, software defined radios and transmitting systems that can deliver high EIRP levels when needed to overcome high loss propagation paths.

Given the propagation to/from an aircraft at altitude, it is entirely possible that harmful interference to sensitive amateur and amateur satellite receivers will be caused over a 1,000 km radius of a single aircraft.

IARU will shortly be providing a brief to Member Societies and other interested parties, asking them to discuss the French proposal with their administrations well in advance of the August CEPT-CPG meeting.

It is possible that France will seek to introduce into other Regional Telecommunications Organisations (RTO) the same proposal to study the 144-146 MHz band for aeronautical use. IARU will provide a brief shortly to enable representations to be made to administrations in countries under those RTOs for protection of this amateur spectrum allocation.

Source: IARU Region 1

The UK Microwave Group Tweeted:
“We hear only one admin (Germany) opposed the 144MHz proposal – no one else.”

Download the documents from the CEPT CPG Project Team A meeting in Prague June 17-21 from

Meeting Minutes

France proposes 144-146 MHz for Aeronautical Mobile Service

1240-1300 MHz band discussed by CEPT WGFM and CPG/PTA

1240-1300 MHz IARU Region 1 paper PTA(19)069 – RNSS Proposal WRC-19 AI 10

Could a new licence class help counter threats at VHF and above?

HS10KING on QO-100 geostationary satellite



To strengthen the relationship between Thai and Japanese amateur radio operators representatives of the JAMSAT group of Japan have travelled to Thailand to visit the satellite ground station HS0AJ.

They will operate from the Ground Station of the Radio Amateur Society of Thailand under the patronage of His Majesty the King (RAST).

On the occasion of the coronation of His Majesty King Vajiralongkorn Bodindradebayavarangkun, HS10A (pronounced “Hotel Sierra-TEN-Alpha), as the 10th king to reign in the Chakri Dynasty, the National Broadcasting and Telecommunications Commission (NBTC), Thailand’s regulator, has authorized the special callsign HS10KING (pronounced “Hotel Sierra-TEN-KING).

There will be an opportunity to communicate with HS10KING using the QO-100 amateur radio satellite and low earth orbit (LEO) satellites that windows pass over Thailand by amateur radio stations which is similar to AMSAT Germany’s use of the special callsign DL50AMSAT using the QO-100 satellite.

RAST hence invites AMSAT amateur radio satellite operators to join in contacting the HS10KING special event station from June 22, 2019 at 10.00 UTC (17.00 Thailand time) until June 23, 2019 at 10.00 UTC (17.00 Thailand time) using SSB mode and DATV (333 – 250 KS) signals from the station HS10KING.

Please be informed and let others know of this opportunity.

Sincerely and with respect, de HS1JAN
Tanan Rangseeprom
Project Manager of JAISAT-1

QO-100 (Es’hail-2)

ARISS contact planned for Rowan Preparatory School UK

International Space Station - Image Credit NASA

International Space Station – Image Credit NASA

An International Space Station school contact has been planned for astronaut Nick Hague KG5TMV with participants at Rowan Preparatory School, Claygate, Surrey, United Kingdom.

The direct contact between NA1SS and GB4RPS is planned for 1:48:55 PM BST (12:48:55 GMT) on Thursday, June 20, 2019 and the downlink signals will be audible in the UK and parts of Europe on 145.800 MHz FM.

Live streaming of the event is expected at

You can receive the ISS signal online from anywhere in the world by using the Farnham WebSDR at

School presentation

Rowan Preparatory School is a vibrant, friendly and nurturing community where girls are encouraged to be themselves. Our school is an independent preparatory school for girls between the ages of 2 to 11, located in the heart of Claygate (near Esher) in Surrey. A school with traditional values and a forward thinking approach to education, we seek to offer a broad and adventurous curriculum full of exciting opportunities.

School life at Rowan is inspiring and offers a breadth of experiences which develop the whole child. The warmth that is evident when you walk through the door at Rowan creates the ideal learning environment for girls to fulfil their potential. They are nurtured and allowed to grow as individuals, encouraged to take risks and have a go at new skills and interests which will enrich their lives. Science, Technology, Engineering and Maths are at the heart of the curriculum at Rowan. Girls make the most of our dedicated specialist teaching spaces and delight in practical learning opportunities in the Engineering and Technology suite. From 3D printers to our radio recording studio, the environment at Rowan is geared towards encouraging creative and exciting learning, ensuring that the girls explore, question and discover in every area of learning. We are passionate about bringing STEM subjects to life and encouraging the girls to see how these subjects translate into the world beyond school. Experiences which will foster successful and inspirational women of the future!

Rowan girls are prepared for the transition to a wide range of successful day and boarding schools and we pride ourselves on finding the right senior school environment for each and every girl. A personalised approach to learning and outstanding pastoral care in our happy environment, ensures that every girl develops a genuine love of learning.

Students Questions:

1. Sophia (Yr 1): How did the International Space Station get built when it just balances in the air?

2. Izzy (Yr 2): What are the challenges to growing food in space if astronauts are to stay in space for longer?

3. Emily (Yr 3): Does your digestion change because in space there is no gravity so your intestine will float in your body?

4. Ashley (Yr 4): Of all the experiments that you have done in space, what has given the most surprising result or has been the most exciting?

5. Alessi (Yr 5): If you spin a ball in the ISS will it keep spinning or will it stop, and if it stops, what stops it?

6. Alannah: (Yr 6): In the future, will it be possible that someone can spend their entire life in space and if so, would their life expectancy change?

7. Grace (Yr 2): If you do a handstand in space does your blood go to your head if there is no gravity?

8. Delilah (Yr 4): Is there anything you could learn about how bacteria and viruses behave in space that could help us defeat infectious bugs around the Earth?

9. Emilia (Yr 5): NASA have said that they will establish a permanent presence on the moon within the next decade, how will they do this and what is the most exciting benefit for human kind?

10. Anya (Yr 6): In all of your time spent on board the ISS, what is the most exciting and extraordinary thing that you have experienced?

11. Sophia saying Zoe’s question (Yr 1): What new information about space are you hoping to learn?

12. Izzy saying Ballie’s question (Yr 2): Can you escape from a black hole?

13. Emily saying Eloise’s question (Yr 3): We have learnt that astronauts are very busy and work long hours. So when you have free time, what do you do for fun?

14. Ashley saying Annabel’s question (Yr 4): How do you get rid of rubbish in space?

15. Alessi saying Sabine’s question (Yr 5): What are you looking forward to the most in nature when you return?

16. Alannah saying Lucy’s question (Yr 6): Our teachers and parents tell us that having a balanced diet is important. Is your diet closely monitored or do you have freedom to choose what you eat? What is your favourite meal?

17. Grace saying Olivia’s question (Yr 1): How do you sleep in space?

18. Delilah saying Amelia’s question (Yr 3): What kind of dangers might you experience in space?

19. Emilia saying Luna’s question (Yr 2): What is the most beautiful thing you can see in space?

20. Anya saying 4J’s question (Yr 4): We have heard that some people don’t believe that the Moon landing took place, what is the best evidence that we have to disprove this theory?

About ARISS:

Amateur Radio on the International Space Station (ARISS) is a cooperative venture of international amateur radio societies and the space agencies that support the International Space Station: NASA, Russian Space Agency, ESA, JAXA, and CSA. The US Center for the Advancement of Science in Space (CASIS) and the National Aeronautics and Space Administration (NASA) provide ARISS special support.

ARISS offers an opportunity for students to experience the excitement of Amateur Radio by talking directly with crew members on board the International Space Station. Teachers, parents and communities see, first hand, how Amateur Radio and crew members on ISS can energize youngsters’ interest in science, technology, and learning.

The primary goal of ARISS is to promote exploration of science, technology, engineering, and mathematics (STEM) topics by organizing scheduled contacts via amateur radio between crew members aboard the ISS and students in classrooms or informal education venues. With the help of experienced amateur radio volunteers, ISS crews speak directly with large audiences in a variety of public forums. Before and during these radio contacts, students, teachers, parents, and communities learn about space, space technologies, and amateur radio.

For more information, see

How to hear the ISS