04-06-2017, 08:28 AM
Hi all....
Ok,,, this is part of the post from the team, to a blog.. with email to contact.
" We strongly believe the satellite is still alive but has an undeployed antenna. As such, we require sufficient transmit gain in both transmit power and antenna gain to achieve positive uplink margin. Our problem is that we do not have the equipment to achieve the required transmit power to overcome the losses due to an unstowed configuration.
We have a recorded *.wav file that you can play through radio in FM mode to perform the uplink.
– The sat uses Nanocom ANT430 antenna that is still stowed. The stowed antenna is exposed on the outside of the spacecraft.
– The sat uses Nanocom U482C transceiver.
– The OBC might be trickling between on and off states and hence a daytime or dusk zenith pass is optimal for the uplink.
Our ground station:
– 21 el H and 21el V yagi configured in RHCP
– Kenwood TS-2000 in FM mode with 50W transmit power.
Hope you have a good weekend, and do not hesitate to contact me at <!-- e --><a href="mailto:cjwayn@unsw.edu.au">cjwayn@unsw.edu.au</a><!-- e --> if you would be willing to help. Your attention has been much appreciated..
Cheers,
Joon Wayn
"
They are using more antenna gain than I have available also.
Ok,,, this is part of the post from the team, to a blog.. with email to contact.
" We strongly believe the satellite is still alive but has an undeployed antenna. As such, we require sufficient transmit gain in both transmit power and antenna gain to achieve positive uplink margin. Our problem is that we do not have the equipment to achieve the required transmit power to overcome the losses due to an unstowed configuration.
We have a recorded *.wav file that you can play through radio in FM mode to perform the uplink.
– The sat uses Nanocom ANT430 antenna that is still stowed. The stowed antenna is exposed on the outside of the spacecraft.
– The sat uses Nanocom U482C transceiver.
– The OBC might be trickling between on and off states and hence a daytime or dusk zenith pass is optimal for the uplink.
Our ground station:
– 21 el H and 21el V yagi configured in RHCP
– Kenwood TS-2000 in FM mode with 50W transmit power.
Hope you have a good weekend, and do not hesitate to contact me at <!-- e --><a href="mailto:cjwayn@unsw.edu.au">cjwayn@unsw.edu.au</a><!-- e --> if you would be willing to help. Your attention has been much appreciated..
Cheers,
Joon Wayn
"
They are using more antenna gain than I have available also.