RSGB Tonight @ 8 Video – Getting started on QO-100

Es'hail-2 Qatar-OSCAR-100On Monday, July 27 Dom Smith M0BLF gave an online talk – Getting started on QO-100as part of the RSGB Tonight @ 8 live webinar series.

Dom’s lockdown project was to complete a set up for the QO-100 amateur radio transponders that are hosted on the geostationary satellite Es’hail-2. This was the first amateur radio payload to be put into a geostationary orbit and provides constant and reliable coverage for amateur voice, data and television contacts over the whole of Africa, Europe and the Middle East and even as far as Brazil in the west, and Thailand in the east.

Getting started on QO-100 is a talk in two halves: first we’ll watch the video, showing the particular set-up chosen—and there are many!—and then there will be chance for a Q&A. The equipment list can be see at https://www.domsmith.co.uk/blog/2020/07/27/rsgb-webinar-on-qo-100/

Watch Getting Started on QO-100 by Dom Smith, M0BLF

Dom Smith, M0BLF has been a radio amateur for nearly 25 years since being licensed at the age of 14 in 1996. He is an active member of the Camb-Hams and Cambridge University Wireless Society (CUWS), and may often be heard contesting, climbing hills for Summits on the Air, and assisting Cambridgeshire RAYNET. He also enjoys travelling for DXPeditions, most recently as JW/M0BLF, VP2MUW and ZC4UW, and he manages QSL cards for most CUWS trips. On top of all that, he volunteers with Cambridge 105 Radio, the local community broadcast station, on the engineering team.

Professionally, Dom works as a Cloud Solutions Architect in the software team at the Royal Society of Chemistry and he holds a PhD in Hispanic Studies.

Watch other RSGB Tonight @ 8 videos at https://www.youtube.com/user/TheRSGB/videos

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

QO-100 products in the AMSAT-UK shop https://amsat-uk.org/

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/

Filtered 2400 MHz Driver Amplifier Kits Now Available

2400 MHz Filtered Driver Amplifier Kits

2400 MHz Filtered Driver Amplifier Kits

This kit has been designed by David Bowman G0MRF and contains all the parts required to drive a PA on 2.4 GHz for QO-100. The completed board will have a gain of about 25 – 26 dB and for best linearity, should be kept to 200 mW output.

2400 MHz Filtered Driver Amplifier Kit

2400 MHz Filtered Driver Amplifier Kit

This kit can be assembled in a couple of hours by constructors with a medium level of experience. In addition to the kit you will need a 2.5mm drill for the mounting holes in the heatsink. You will also need a pair of SMD tweezers, a soldering iron with a fine tip and some small diameter solder e.g. 0.4 or 0.5mm. Finally, a headband magnifier or similar will help considerably with the SMD parts.

David suggests running the board from 12 or 12.6 volts. At 13.8 volts the supply current and power dissipation increase without any significant improvement in performance

The kit is available from the AMSAT-UK shop https://shop.amsat-uk.org/Filtered_S_Band_Driver_Amplifier_Kit/p3815740_20451527.aspx

The Assembly Guide PDF is available at
https://d11fdyfhxcs9cr.cloudfront.net/templates/383483/myimages/g0mrf_filtered_s_band_amp_kit_assembly_guide.pdf

AMSAT-BR QO-100 FT8 QRPp Experiment

AMSAT-BR Logo and Dish AntennaAMSAT-Brazil is organizing a reverse beacon FT8 QRPp experiment/contest via the QO-100 geostationary amateur radio transponder.

The first 10 spotted stations with lower SNR will receive a Certificate of Accomplishment.The dead line will be May 1st 2020. To qualify, the SNR must be lower than -18 dB (as measured by the ft8 decoder). The receiver will be active on Saturdays and Sundays from 12:00 UTC to 24:00 UTC and will be tuned to 10.489540 GHz with a 3.5 kHz bandwidth. All stations calling CQ will be logged.

The objective for the project is to incentive low power experimentation through the QO-100 narrow band transponder. Stations participating in the experiment are welcome to send a brief description of their setup, including information about RF power output, hardware and software setups, antenna type and gain, photos, etc. to the email address
py2sdr at gmail dot com.

73, Edson PY2SDR

You can listen to the QO-100 transponder downlink online at https://eshail.batc.org.uk/nb/

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

Project for school QO-100 amateur radio stations

Es'hail-2 Qatar-OSCAR-100DARC reports on a Practical Seminar about the amateur radio QO-100 geostationary satellite transponders. Part of seminar fees goes to the “School stations on QO-100” project.

A translation of the DARC post reads:

Top-class seminar in the DARC office in Baunatal: On February 28, experts from AMSAT-DL e.V. gave around 40 people a detailed insight into the possibilities offered by the QO-100 amateur radio transponders on the geostationary satellite Es’hail-2.

AMSAT-DL President Peter Gülzow, DB2OS, started with a keynote speech. Workshops with four lecturers dealt with different operating modes, different hardware concepts and readily available software solutions for the PC.

Part of the attendance fee will go to the joint project of DARC and AMSAT-DL “School stations on QO-100”. Together they want to equip ten schools that already have a training call sign with a complete reception system for the narrowband transponder.

DARC and AMSAT-DL want to motivate more young people for amateur radio through the possibilities that QO-100 offers.

Source DARC https://darc.de/

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