[amsat-bb] EO-79 now in transponder mode - pass reports appeciated

Wouter Weggelaar wouterweg at gmail.com
Fri Nov 11 09:58:31 UTC 2016

Hi all,

AMSAT-UK and AMSAT-NL working with ISIS BV are delighted to announce
that the FUNcube U/V transponder, on the 2U CubeSat QB50p1, has now
been activated with a regular schedule.

Due to power budget constraints the transponder cannot be operational
24/7 and an orbit specific schedule has been developed. The
transponder will commence operation 27 minutes after the spacecraft
enters sunlight and will stay on for a period of 25 minutes. This
schedule may be modified over the forthcoming weeks as a result of

The transponder frequencies are:

Uplink: 435.047-435.077 MHz LSB
Downlink: 145.935-145.965 MHz USB

And the output power is approximately 400mW.

Qb50p1 was launched in June 2014, as a collaborative effort led by the
von Karman Institute and ISIS-BV, into a sun synchronous 620×600 km
polar orbit as a precursor spacecraft for the QB50 mission. The
primary function of the satellite was to test a number of the systems
and science payloads. This phase has now been completed and we are
grateful to VKI and ISIS BV for carrying this transponder into space
and, again, to ISIS, for developing and uploading the new, required,
flight code.


We would like to receive pass reports on the -bb so that we can gauge
how the satellite is used and if it is performing well.

Please post a quick reply stating:
- pass time and date
- if you could use the transponder
- if it was busy
- any other remarks you would like to make


We hope you have lots of fun using EO-79!

The AMSAT-UK and AMSAT-NL FUNcube Team

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