FUNcube-1 (AO73) Celebrating eight years in orbit!

FUNcube-1 Telemetry as at Nov 21, 2021

FUNcube-1 Telemetry as at Nov 21, 2021

November 21, 2021, marks the eighth birthday of the FUNcube-1 CubeSat. Remarkably the tiny spacecraft, launched from Russia on November 21, 2013, continues to work well having travelled more than a billion kilometres in space.

During the past couple of months, the spacecraft’s orbits have been running just along the edge of the terminator. Initially we had effectively full sun with no eclipses but at the beginning of this month it appears that the solar panels were not receiving enough solar radiation to keep the battery fully charged.

FUNcube-1 was transmitting continuous high-power telemetry and was therefore consuming maximum power. The screenshot above is from the AMSAT-UK/BATC groundstation at Goonhilly Earth Station. The FUNcube Dashboard shows the rapid decline in the bus voltage from an already below normal 8.0V down to 7.8V. The spacecraft was switched to “safe” mode on the afternoon of November 18th. This reduced to total power consumption by almost 50% and, as can been seen, the spacecraft is again in a happy “power positive” situation.

Although safe mode provides less than 20mW of downlink RF, it is remarkable how many stations are still receiving and decoding the 1k2 BPSK telemetry. This is a good point at which to say a massive thank you to the many many stations around the world who, even after eight years, are continuing to submit their data to the FUNcube Data Warehouse. It really is valuable to the team and has really helped us to understand what is going on up there!

We will continue to monitor the telemetry over the next few weeks and plan to return FUNcube-1 to nominal autonomous operation, with the transponder on when the spacecraft is in eclipse, as soon as possible.

Interestingly, it appears that we will not be having any more “full sunlight” periods for the foreseeable future., however those that we have experienced have provided some good data on how hot a 1U CubeSat can become in such circumstances!

Ham radio CubeSats to deploy from ISS

Kibo Robot Arm CubeSat Deployment

Kibo Robot Arm CubeSat Deployment

It is expected four CubeSats carrying amateur radio payloads will be deployed on the morning of Wednesday, October 6.

You can watch live at these URL’s:
#1 0855-0945 GMT Binar-1, Maya-3, Maya-4
#2 1035-1105 GMT CUAVA-1

On the AMSAT Bulletin Board Masa JN1GKZ writes:

JAXA announced four CubeSats deploy from ISS at Oct 6 with J-SSOD. The satellites are Binar-1, Maya-3, Maya-4 and CUAVA-1. All the satellites operate on amateur band.

The deployment sked is followings.
#1 0850-0940z Binar-1, Maya-3, Maya-4
#2 1030-1100z CUAVA-1

The deployment will be live on the JAXA YouTube channel.

Binar-1 – 1U CubeSat Australia
Downlink 437.292 MHz, 435.810 MHz 19k2 GMSK
Uplink 435.810 MHz

Maya-3/4 – part of the BIRDS Project 1U CubeSat Philippines
Downink 145.825 MHz APRS, 437.375 MHz CW, 4k8 GMSK

CUAVA-1 3U CubeSat Australia
Downlink 437.075 MHz 9k6 GMSK
Uplink 145.875 MHz

Happy chasing!
Tokyo Japan

AMSAT Bulletin Board

FUNcube-1 (AO73) returns to full sunlight and continuous telemetry mode

AO-73 (FUNcube-1) - Image credit Wouter Weggelaar PA3WEG

AO-73 (FUNcube-1) – Image credit Wouter Weggelaar PA3WEG

After a few months of normal eclipse periods, FUNcube-1 (AO73) will, next week, re-enter full sunlight from next week for a period of approximately two months.

As we have been in continuous transponder mode for some time now, we have decided that, during this sunlight period, FUNcube-1 should operate in continuous high power telemetry mode. The change will be made within the next few days.

FUNcube-1 has now been in orbit for almost eight years and the telemetry indicates that all systems, including the battery and solar panels appear to operating as well now as they did immediately after launch!

GENESIS satellites to launch



After a year waiting, finally this Friday, September 3, at 01:00 UTC the digital GENESIS satellites are expected to launch from Vanderberg AFB aboard Firefly’s Alpha rocket in its maiden flight.

Update Sept 3. 2021: A flight anomaly resulted in the loss of the satellites.

Felix Paez EA4GQS reports:
“Unfortunately, the GENESIS satellites were destroyed along with the Firefly Alpha vehicle as it suffered an anomaly when it was travelling at Mach 1 speed about two minutes after the launch. It was Firefly’s first flight and it was the second attempt after the first had been aborted an hour earlier a few seconds before takeoff.

We are very proud of all the team work and very grateful for this opportunity Firefly has granted to us.

In January we will launch with SpaceX through Alba Orbital, our FM repeaters Hades and EASAT-2. We will keep you posted.”

These satellites are ASK (OOK) and CW repeaters. They transmit a lot of telemetry and also 19 different CW greeting messages in English and Spanish.

We would like to ask you all to please try to receive them as any information about their transmissions would be very valuable for us. These are the first satellites we build by ourselves and we need to learn everything we can of them. Waterfalls, audio USB receptions or IQ files would be very appreciated. Please send them to or to We will send you a nice QSL.

Initial keplerians are listed below. We expect to provide accurate ones a pair of days after the launch.

1 99999U 21200E 21246.13531250 .0011565 00000-0 00000-0 0 9990
2 99999 137.094 42.0460 0000473 210.6500 291.0540 15.90200000 16

1 99999U 21200E 21246.13531250 .0011565 00000-0 00000-0 0 9990
2 99999 137.094 42.0460 0000473 210.6500 291.0540 15.90200000 16

145.875 MHz uplink, Modes: CW, ASK 50 bps
436.875 / 434.203 (aux) MHz downlink CW, ASK 50 bps, callsign AM2SAT

145.888 MHz uplink, Modes: CW y ASK 50 bps
436.888 / 434.216 (aux) MHz downlink CW ASK 50 bps, callsign AM3SAT

Live launch streaming will be held in the channel of EverydayAstronaut on YouTube.

More information about this launch can be found here:

Current countdown can be found here:

Full GENESIS transmission descriptions can be found here:

Thanks in advance and regards,


AO-109 transponder available for use by efficient modes like FT4/CW

AMSAT FOXAMSAT has announced the transponder on the amateur satellite AO-109 (Fox-1E) is available for use by efficient modes such as FT4 or CW.

A statement on the AMSAT website says:

The AMSAT Engineering and Operations Teams are pleased to announce that AO-109 (RadFxSat-2/AMSAT Fox-1E) is now open for amateur use. Users are advised to use efficient modes such as CW or FT4 for making contacts, since issues with the satellite make SSB voice contacts challenging at best.

Please see the May/June 2021 issue (Vol. 44, No. 3) of The AMSAT Journal for an article by Burns Fisher, WB1FJ, and Mark Hammond, N8MH, detailing the various attempts to characterize AO-109 and its apparent problems.

On behalf of the Engineering and Operations Teams–

Jerry, N0JY and Drew, KO4MA

AO-109 Frequencies
Inverting Linear Transponder
Uplink 145.860 MHz – 145.890 MHz
Downlink 435.760 MHz – 435.790 MHz
1k2 BPSK Telemetry 435.750 MHz (non-operational)

Source AMSAT

AMSAT Bulletin Board

MIR-SAT1 to deploy from ISS

MIR-SAT1 CubeSat

MIR-SAT1 CubeSat

The Mauritius Amateur Radio Society (MARS), is offering an Award to commemorate the deployment of the MIR-SAT1 CubeSat from the ISS, planned for June 22 at 10:55 GMT.

The award is open to all participating Radio Amateurs/SWLs worldwide and will be issued to those decoding MIR-SAT1 telemetry (TLM) and forwarding it to SatNogs.

Full details of the award and links to telemetry decoders are at

The deployment will be shown live on JAXA YouTube channel, the broadcast starts at 10:35 GMT on Tuesday, June 22.

The IARU Satellite Frequency Coordination page reports:

MIR-SAT1 is a 1U CubeSat mission with the following objectives:

1. Verify the performance of the on-board subsystems by receiving telemetry from the satellite and establish communication to and from the satellite (command and control).
2. Collect images of Mauritius and the Mauritian EEZ for capacity, building, experiment and research.
3. Experimental communication with other islands via the satellite (for scientific and/or emergency purposes), through a Radio Amateur digipeater payload.
4. V/U 9600bps GMSK digipeater may be open for Radio Amateur communication worldwide when the satellite not used for all above.

A downlink on 436.925 MHz has been coordinated. Decoders for the amateur radio community and schools have been developed by Chris AC2CZ and Daniel EA4GPZ and will be available in the public domain on their WEB sites/Github, Links will be provided before launch on Tweeter, AMSAT-BB and Space Mauritius, see

For the digipeater operation it will be necessary to evaluate the power available after deployment to decide on opening same 24/7 or on scheduled time.

IARU Satellite Frequency Coordination pages

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