Schedule released for E2STAYHOME satellite operation

Es'hail-2 Qatar-OSCAR-100Thailand’s regulator, the National Broadcasting and Telecommunications Commission (NBTC), has issued the special callsign, E2STAYHOME, to the Radio Amateur Society of Thailand under the Royal Patronage of His Majesty the King (RAST) for use during the outbreak of the COVID-19 virus.

This is because it is very important for people to boost their immune systems to fight off germs that can enter their bodies and to reduce the chance of getting infected by the COVID-19 virus. Now, it is very important to stay home and to keep a distance of at least one metre from others, if this is possible, which is one way to help prevent the spread of the disease on a global basis.

This is a rare opportunity for ham radio operators who are interested in satellite communications to legally communicate with Thai amateur radio stations by means of the Es’hail-2 or QO-100 geostationary satellite which licensed by the Thai regulator, the NBTC, in response to requests from RAST, and using the special callsign E2STAYHOME on the evenings of each working day in Thailand and on every weekend.

The operating schedule is as follows:
Monday to Friday, 1100 – 1500 UTC
Saturday and Sunday, 0800 – 1500 UTC
all days after 1600 UTC and up to 2200 UTC Thailand has an emergency curfew in place. Please STAY HOME!!

During these times, Thai hams will be operating using this callsign on all bands and in all modes, including all satellite modes under the supervision of the Radio Amateur Society of Thailand (RAST) in an effort to help prevent the spread of COVID-19 and they will be QRV from today until July 15, 2020. QSOs with E2STAYHOME can be confirmed via Tim W. Tadsri, HS6MYW and QSL cards will be sent to all via the bureau.

73 de HS1JAN
Tanan Rangseeprom

AMSAT Bulletin Board http://www.amsat.org/mailman/listinfo/amsat-bb

RAST https://www.qsl.net/rast/

5 watt 2.4 GHz Amplifier Kit for QO-100 is Back in Stock

5 watt 2400 MHz Amplifier Kit

5 watt 2400 MHz Amplifier Kit

The AMSAT-UK shop has fresh stocks of the popular 5 watt 2.4 GHz amplifier kit for use with the QO-100 geostationary satellite. Update May 23: Unfortunately it is now Sold-Out.

The amplifier was designed by Kurt Moraw DJ0ABR and the kit was implemented by Arved Viehweger M0KDS.

The kit includes a single sided PCB on which is already mounted the PA transistor, there is a suitable heat sink on which to mount the PCB with the provided screws. All electronic components are included as are 2 SMA sockets. Assembly of the kits will require some surface mount components to be soldered to the PCB.

Note: It does not include a case for the unit and a separate 24 volt power supply will be required.

Kit details at https://shop.amsat-uk.org/QO-100_5W_Amplifier_Kit_designed_by_DJ0ABR_and_implemented_by_M0KDS/p3815740_20307881.aspx

Assembled PCB https://shop.amsat-uk.org/product/u-100ampassembled

QO-100 information https://amsat-uk.org/satellites/geo/eshail-2/

Sir Martin Sweeting G3YJO – Early years and favourite space missions

Sir Martin Sweeting G3YJO - Bold. Audacious. Game-changing.Radio amateur and Executive Chairman of SSTL, Sir Martin Sweeting G3YJO, has recorded a series of home videos from Coronavirus lockdown to record answers to the questions he is most frequently asked.

In this episode he talks about his inspiration for pioneering the original SmallSats revolution and reveals two of his favourite SSTL missions.

Watch Sir Martin Sweeting G3YJO – early years & favourite missions

What is Amateur Radio? http://www.essexham.co.uk/what-is-amateur-radio

Free UK amateur radio online training courses and FAQ that describes how to apply to take the Foundation exam online from your own home
http://www.southgatearc.org/news/2020/april/online-training-for-amateur-radio.htm

AMSAT-UK https://amsat-uk.org/
https://twitter.com/AmsatUK

Online Amateur Radio Satellite talk on Zoom

International Space Station - Image Credit NASA

International Space Station – Image Credit NASA

On Wednesday, May 13, at 1830 GMT (7:30pm BST) Robin Moseley G1MHU will give a talk on Zoom titled “Introduction to amateur satellites, meteor scatter, EME and ISS”.

The presentation is being organised by the Denby Dales Amateur Radio Society and being on Zoom it’ll be viewable on any Tablet or Smartphone with the Zoom App or from a Windows PC or Laptop.

The Zoom meeting ID is 278 609 9353 https://zoom.us/j/2786099353

A range of other talks are planned to be available on Zoom, they include:

Tuesday 5th May 7.30pm BST Martin Butler M1MRB of ICQ Podcast – Talk on the Future of radio clubs – which way forward ?

Wednesday 6th May 7.30pm BST Open club discussion on using a VNA

Wednesday 13th May 7.30pm BST Introduction to amateur satellites, meteor scatter, EME and ISS Robin Moseley G1MHU

Wednesday 20th May Don Field G3XTT Editor of Practical Wireless magazine

Denby Dales Amateur Radio Society http://www.DDARS.net/

Spring Issue of OSCAR News Available

Oscar News issue 229 March 2020 Front CoverE-members of AMSAT-UK can now download the March 2020 edition of OSCAR News, issue 229, here.

The paper edition edition is being sent to postal members and should arrive in the coming week.

In this issue:
• From the Secretary’s Keyboard
• QO-100 Wideband Transponder – 2020 Operating Guidelines and Bandplan
• AMSAT QO-100 NB Transponder Bandplan Update
• 5-watt 2.4 GHz amplifier kit for QO-100
• My experience with the AMSAT-UK 5W QO-100 Amplifier
• Review of the DJ0ABR 5W 2.4GHz Amplifier
• Under Development!
• AMSAT Files Comments Opposing Deletion of 3.4 GHz Band
• The eSatellite Award by eQSL
• Ad Astra!
• One Year of Operation for the Goonhilly WebSDRs for QO-100
• HuskySat-1
• How Phoenix went from a Paper Proposal to ASU’s First Student-Led CubeSat in Space
• The Qarman Cubesat
• The latest FUNcube Groundstation – in Antarctica
• From the Archives – An AMSAT-NA Symposium early this century

AMSAT-UK FUNcube Mission Patch

AMSAT-UK FUNcube Mission Patch

Membership of AMSAT-UK is open to anyone who has an interest in amateur radio satellites or space activities, including the International Space Station (ISS).

E-members of AMSAT-UK are able to download the quarterly publication OSCAR News as a convenient PDF that can be read on laptops, tablets or smartphones anytime, anyplace, anywhere. Join as an E-member at Electronic (PDF) E-membership

PDF sample copy of “Oscar News” here.

Join AMSAT-UK using PayPal, Debit or Credit card at
http://shop.amsat-uk.org/

E-members can download their copies of OSCAR News here.

DOSAAF-85 (RS-44) amateur radio transponder activated

Artist impression of DOSAAF-85/RS-44 flying free but seems to be still attached to Breeze K/M rocket body

Artist impression of DOSAAF-85/RS-44 flying free but seems to be still attached to Breeze K/M rocket body

The amateur radio linear transponder (SSB/CW) payload on the Russian satellite DOSAAF-85 (RS-44) has been activated.

Dmitry Pashkov R4UAB reports:

DOSAAF-85 / RS-44 under construction

DOSAAF-85 / RS-44 under construction

DOSAAF-85 is a small scientific satellite created by specialists of the company Information Satellite Systems (ISS) Reshetnev and students of the Siberian State Aerospace University (SibSAU) Krasnoyarsk.

The satellite is named after the 85th anniversary of the Voluntary Society for the Assistance to the Army, Aviation and Navy, the organization responsible for the military training of Soviet youth.

The DOSAAF-85 satellite is designed to provide amateur radio communications, as well as to develop promising technologies. This is the third satellite that was created by specialists of ISS-Reshetnev and is based on the Yubileyniy platform, which features a hexagonal prism structure with body mounted solar cells.

DOSAAF-95 / RS-44 Antennas, 435 MHz top 145 MHz bottom

DOSAAF-95 / RS-44 Antennas, 435 MHz top 145 MHz bottom

The satellite was launched into orbit on December 26, 2019 from the Plesetsk Cosmodrome and is in an elliptical orbit with a perigee of 1175 km, an apogee of 1511 km and an inclination of 82.5 degrees.

Transmitter power: 5 watts
Beacon: 435.605 MHz – transmits CW call sign RS44

Inverting transponder:
Earth-to-Space: 145.965 MHz +/- 30 kHz
Space-to-Earth: 435.640 MHz +/- 30 kHz

Source Dmitry Pashkov R4UAB whose page also contains the satellite’s TLE, see
https://tinyurl.com/RussiaR4UAB

Peter 2M0SQL has added RS-44 to the AMSAT Live OSCAR Satellite Status Page at
https://www.amsat.org/status/

Linear Satellite Frequency Summary https://www.amsat.org/linear-satellite-frequency-summary/

RS-44 Pass Prediction http://amsat.org.ar/pass?satx=rs-44