Planned South African SDR Cubesat

AMSAT SA has announced that parallel to its analogue Kletskous CubeSat, the group is working on a digital project featuring a Software defined transponder.

Called AfriCUBE, the CubeSat will use the same space frame as KLETSKOUS. Anton Janovsky is current building a prototype transponder.

AMSATSA is inviting persons interested in becoming part of the development team to send their details to admin@amsatsa.org.za.

Meanwhile the development and final construction of the AMSAT SA KLETSKOUS is plagued by electronic component obsolescence. This forces unwanted design changes to be made to ensure that when the time comes to construct the final launch unit, the main components are still available. The KLETSKOUS team decided to freeze the design of KLETSKOUS and purchase a quantity of devices to proactively mitigate future obsolescence. This decision will also speed up the process of putting a final satellite on the table.

Every time we change designs to mitigate for the discontinued components, it is like starting the design afresh, often creating new problems that have to be solved. By freezing the design, in other words making a final decision on the main specialised devices to be used, we will be able to speed up the process of putting a flight ready unit on the table.
— Hannes Coetzee, ZS6BZP

KLETSKOUS is not a textbook design. Most of the sub-components that will make up KLETS KOUS are designed and being built by the volunteer team. "We do not have the finances to go out and purchase sub-units and simply wire them up," Hannes said.

FUNcube Operations Update

The FUNcube team have announced that AO-73 is now in full time amateur mode

FUNcube-1

As you will know, AO73/FUNcube-1 has been in full sunlight for over one month and has been transmitting continuously high power telemetry for most of that time. This has now been changed to full time amateur mode so the transponder is once again available. With the more stable on board temperatures being experienced, this means that the transponder frequencies are also now more stable.

We expect to leave it in this mode for some weeks so that the team can determine whether or not the currents flowing from the solar panels are having any noticeable effect on the spin period.

FUNcube-2

The FUNcube-2 transponder on UKube-1 continues to be in full time transponder mode. There are occasional breaks in service for a few seconds when the OBC reboots and the other onboard transmitter sends its CW beacon.

FUNcube-3 on Nayif-1

EO88/Nayif-1 continues to perform nominally with high power telemetry when in sunlight and amateur mode when in eclipse.

With their slightly different orbital characteristics it is useful that AO73 is now the early bird, EO88 comes over in the mid morning and UKube provides coverage in the afternoon.

We have been suffering from some network issues in relation to uploading the telemetry from the Dashboards to the Data Warehouse over the past couple of weeks. Apologies for this, but hopefully everything is now stable again. ie fingers are still crossed. Thank you for all the telemetry that you upload.

Like many other teams, we are presently waiting for the next Space-X launch from Vandenberg which is expected to be carrying a number of new amateur payloads, These will provide additional transponder and STEM capabilities for the amateur satellite service. Exciting times ahead.


Ham Radio Satellite List

Amateur / Ham Radio Operator Mineo Wakita JE9PEL has made available a table of all amateur radio satellites in Word and Spreadsheet formats

Also available is a Doppler.sqf file for use in the SatPC32 satellite tracking software.

JE9PEL satellite list - http://www.ne.jp/asahi/hamradio/je9pel/satslist.htm