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
Artist’s impression of HuskySat-1 flying free in space but it’s still attached to Breeze K/M rocket body
After a week of testing, the transponder on HuskySat-1 is enabled and open for use and testing. It’s fairly sensitive, and 5-10 watts is plenty most of the time. There are some fades due to satellite orientation, and some passes are definitely better than others. The operations and engineering teams are also watching a few anomalies. Please keep an eye on the beacon during transponder ops, for those with spectrum scopes. Strong signals may impact the beacon strength.
HuskySat-1 is the Husky Satellite Lab at University of Washington’s first cubesat, and the first mission with AMSAT’s linear transponder module (LTM-1), a V/u transponder and integrated telemetry beacon and command receiver. UW recently completed their Part 5 operations and have graciously let AMSAT’s Part 97 transponder operations commence. This transponder module is available for use in educational cubesat missions willing to enable the transponder for worldwide use. Contact Drew KO4MA or VP Engineering Jerry Buxton N0JY for additional details.
Reports and observations are welcome to the Amsat-BB mailing list.
Congratulations to Husky Satellite Lab, and to the entire AMSAT Engineering team for keeping amateur radio in space. Thanks to Dr. Mark Hammond, N8MH for commissioning and operations support.
73, Drew KO4MA
AMSAT VP Operations
HuskySat-1 V/u inverting transponder, 145.910 to 145.940 uplink, 435.810 to 435.840 downlink, telemetry beacon 1200 baud BPSK at 435.800
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
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
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/
E-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
• 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
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
E-members can download their copies of OSCAR News here.
The Online Space Workshop #OSW2020 takes place this weekend May 2-3.
You can watch live on YouTube at https://www.youtube.com/channel/UC4SHJxCLutZRWK9uQXFVXxQ
The full schedule of presentations is on the AMSAT Nepal site. Note the times are given in Nepali Time which is 5:45 hours ahead of GMT and 4:45 ahead of BST, see
Among the speakers are:
• Tom Walkinshaw, founder and CEO of UK-based Alba Orbital, on Getting PocketQubes on Orbit, cheaply, regularly and reliably
• Félix Páez EA4GQS, President of AMSAT Spain (AMSAT EA), on AMSAT EA PocketQube Missions and Designs
• Julián Fernández EA4HCD, Co-Founder and CEO of Fossa Systems, on FOSSASAT-1, Data from the first IOT Picosatellites in Space
Follow AMSAT Nepal on Twitter at https://twitter.com/AmsatNepal