http://www.amsat.org/mailman/listinfo/amsat-bb
RAST https://www.qsl.net/rast/
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m5aka AMSAT-UK
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AMSAT-UK shop has fresh stocks of the popular 5 watt 2.4 GHz amplifier kit for use with the QO-100 geostationary satellite.
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/
Get The Details…
m5aka AMSAT-UK
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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
m5aka
AMSAT-UK
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Artist’s impression of HuskySat-1 in Space
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 CubeSat
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
HuskySat-1 Boards
m5aka
AMSAT-UK
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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
https://d11fdyfhxcs9cr.cloudfront.net/templates/383483/myimages/g0mrf_filtered_s_band_amp_kit_assembly_guide.pdf
m5aka
AMSAT-UK
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