Hi All,
Today, 25th of March 2016, the EO-79 transponder has been turned on for a prolonged period.
The FUNcube transponder subsystem on QB50p1 (EO-79) had been provided by AMSAT-UK and AMSAT-NL and is a similar subsystem as on FUNcube-1, but without the telemetry downlink circuitry.
The current software running on EO-79 does experience occasional reboots. When these reboots happen, the transponder is automatically turned off and will have to be turned back on by a command station. The FUNcube team has selected a few command stations to do so, but be advised the transponder may be off.
TLEs: AMSAT keps name: EO-79 Celestrak keps Name: QB50P1 Celestrak file: cubesat.txt NORAD # 40025 COSPAR designator 2014-033-R
Frequencies: Uplink: 435.035-435.065 MHz LSB Downlink: 145.935-145.965 MHz USB
EO-79 has been set to only beacon the normal AX.25 beacon every 30 seconds instead of 10 seconds. The beacon frequency is 145.815MHz and consists of AX.25 frames on BPSK. more details about the downlink can be found on the ISIS HAM page at http://isispace.nl/HAM/qb50p.html
Just like FUNcube-1, the crystal oscillator circuits exhibit drift with temperature. This means manual tuning will probably work best.
Lastly, the commanding team availability will be limited over Easter, so please report the transponder being on or off on the status page of AMSAT: http://www.amsat.org/status/ It does not appear in the table, but it does in the reporting drop-down.
73 and have FUN
Wouter Weggelaar, PA3WEG AMSAT-NL AMSAT-UK
Lots of ditters, but only heard and worked WB8RJY on the 1437Z pass over eastern North America. Lots of QSB, but strong signals otherwise on the 15 degree pass.
I'll be on the next pass at 1612Z as well.
73,
Paul, N8HM
On Fri, Mar 25, 2016 at 6:14 AM, Wouter Weggelaar [email protected] wrote:
Hi All,
Today, 25th of March 2016, the EO-79 transponder has been turned on for a prolonged period.
The FUNcube transponder subsystem on QB50p1 (EO-79) had been provided by AMSAT-UK and AMSAT-NL and is a similar subsystem as on FUNcube-1, but without the telemetry downlink circuitry.
The current software running on EO-79 does experience occasional reboots. When these reboots happen, the transponder is automatically turned off and will have to be turned back on by a command station. The FUNcube team has selected a few command stations to do so, but be advised the transponder may be off.
TLEs: AMSAT keps name: EO-79 Celestrak keps Name: QB50P1 Celestrak file: cubesat.txt NORAD # 40025 COSPAR designator 2014-033-R
Frequencies: Uplink: 435.035-435.065 MHz LSB Downlink: 145.935-145.965 MHz USB
EO-79 has been set to only beacon the normal AX.25 beacon every 30 seconds instead of 10 seconds. The beacon frequency is 145.815MHz and consists of AX.25 frames on BPSK. more details about the downlink can be found on the ISIS HAM page at http://isispace.nl/HAM/qb50p.html
Just like FUNcube-1, the crystal oscillator circuits exhibit drift with temperature. This means manual tuning will probably work best.
Lastly, the commanding team availability will be limited over Easter, so please report the transponder being on or off on the status page of AMSAT: http://www.amsat.org/status/ It does not appear in the table, but it does in the reporting drop-down.
73 and have FUN
Wouter Weggelaar, PA3WEG AMSAT-NL AMSAT-UK _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
By the way, I'd transmit 10-12 kHz up from where you expect to be based on Doppler calculations. I think I was around 12-15 kHz higher than nominal.
73,
Paul, N8HM
On Fri, Mar 25, 2016 at 10:53 AM, Paul Stoetzer [email protected] wrote:
Lots of ditters, but only heard and worked WB8RJY on the 1437Z pass over eastern North America. Lots of QSB, but strong signals otherwise on the 15 degree pass.
I'll be on the next pass at 1612Z as well.
73,
Paul, N8HM
On Fri, Mar 25, 2016 at 6:14 AM, Wouter Weggelaar [email protected] wrote:
Hi All,
Today, 25th of March 2016, the EO-79 transponder has been turned on for a prolonged period.
The FUNcube transponder subsystem on QB50p1 (EO-79) had been provided by AMSAT-UK and AMSAT-NL and is a similar subsystem as on FUNcube-1, but without the telemetry downlink circuitry.
The current software running on EO-79 does experience occasional reboots. When these reboots happen, the transponder is automatically turned off and will have to be turned back on by a command station. The FUNcube team has selected a few command stations to do so, but be advised the transponder may be off.
TLEs: AMSAT keps name: EO-79 Celestrak keps Name: QB50P1 Celestrak file: cubesat.txt NORAD # 40025 COSPAR designator 2014-033-R
Frequencies: Uplink: 435.035-435.065 MHz LSB Downlink: 145.935-145.965 MHz USB
EO-79 has been set to only beacon the normal AX.25 beacon every 30 seconds instead of 10 seconds. The beacon frequency is 145.815MHz and consists of AX.25 frames on BPSK. more details about the downlink can be found on the ISIS HAM page at http://isispace.nl/HAM/qb50p.html
Just like FUNcube-1, the crystal oscillator circuits exhibit drift with temperature. This means manual tuning will probably work best.
Lastly, the commanding team availability will be limited over Easter, so please report the transponder being on or off on the status page of AMSAT: http://www.amsat.org/status/ It does not appear in the table, but it does in the reporting drop-down.
73 and have FUN
Wouter Weggelaar, PA3WEG AMSAT-NL AMSAT-UK _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Paul We had a nice QSO few minutes ago on a high pass over here , PY5LF, PY2RN , PU2RAS , very good signal . I'm using 13kHz above on the uplink to match ;
EO-79,145950,435063,USB,LSB,REV,0,0,F
73
2016-03-25 12:08 GMT-03:00 Paul Stoetzer [email protected]:
By the way, I'd transmit 10-12 kHz up from where you expect to be based on Doppler calculations. I think I was around 12-15 kHz higher than nominal.
73,
Paul, N8HM
On Fri, Mar 25, 2016 at 10:53 AM, Paul Stoetzer [email protected] wrote:
Lots of ditters, but only heard and worked WB8RJY on the 1437Z pass over eastern North America. Lots of QSB, but strong signals otherwise on the 15 degree pass.
I'll be on the next pass at 1612Z as well.
73,
Paul, N8HM
On Fri, Mar 25, 2016 at 6:14 AM, Wouter Weggelaar [email protected]
wrote:
Hi All,
Today, 25th of March 2016, the EO-79 transponder has been turned on for a prolonged period.
The FUNcube transponder subsystem on QB50p1 (EO-79) had been provided by AMSAT-UK and AMSAT-NL and is a similar subsystem as on FUNcube-1, but without the telemetry downlink circuitry.
The current software running on EO-79 does experience occasional reboots. When these reboots happen, the transponder is automatically turned off and will have to be turned back on by a command station. The FUNcube team has selected a few command stations to do so, but be advised the transponder may be off.
TLEs: AMSAT keps name: EO-79 Celestrak keps Name: QB50P1 Celestrak file: cubesat.txt NORAD # 40025 COSPAR designator 2014-033-R
Frequencies: Uplink: 435.035-435.065 MHz LSB Downlink: 145.935-145.965 MHz USB
EO-79 has been set to only beacon the normal AX.25 beacon every 30 seconds instead of 10 seconds. The beacon frequency is 145.815MHz and consists of AX.25 frames on BPSK. more details about the downlink can be found on the ISIS HAM page at http://isispace.nl/HAM/qb50p.html
Just like FUNcube-1, the crystal oscillator circuits exhibit drift with temperature. This means manual tuning will probably work best.
Lastly, the commanding team availability will be limited over Easter, so please report the transponder being on or off on the status page of AMSAT: http://www.amsat.org/status/ It does not appear in the table, but it does in the reporting drop-down.
73 and have FUN
Wouter Weggelaar, PA3WEG AMSAT-NL AMSAT-UK _______________________________________________ Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions expressed
are solely those of the author, and do not reflect the official views
of AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
A quick update: the satellite hit its safe mode trigger and needs to be commanded back on. The safe mode flag has been cleared, so we just need to activate the transponder again.
Further clarification, we expect to switch back to normal operations after the Easter weekend. I am afraid my previous E-mail had a cut-and-paste error on the prolonged period of time *during Easter*.
Rest assured we are also still working on the permanent activation.
Wouter
On Fri, Mar 25, 2016 at 11:14 AM, Wouter Weggelaar [email protected] wrote:
Hi All,
Today, 25th of March 2016, the EO-79 transponder has been turned on for a prolonged period.
The FUNcube transponder subsystem on QB50p1 (EO-79) had been provided by AMSAT-UK and AMSAT-NL and is a similar subsystem as on FUNcube-1, but without the telemetry downlink circuitry.
The current software running on EO-79 does experience occasional reboots. When these reboots happen, the transponder is automatically turned off and will have to be turned back on by a command station. The FUNcube team has selected a few command stations to do so, but be advised the transponder may be off.
TLEs: AMSAT keps name: EO-79 Celestrak keps Name: QB50P1 Celestrak file: cubesat.txt NORAD # 40025 COSPAR designator 2014-033-R
Frequencies: Uplink: 435.035-435.065 MHz LSB Downlink: 145.935-145.965 MHz USB
EO-79 has been set to only beacon the normal AX.25 beacon every 30 seconds instead of 10 seconds. The beacon frequency is 145.815MHz and consists of AX.25 frames on BPSK. more details about the downlink can be found on the ISIS HAM page at http://isispace.nl/HAM/qb50p.html
Just like FUNcube-1, the crystal oscillator circuits exhibit drift with temperature. This means manual tuning will probably work best.
Lastly, the commanding team availability will be limited over Easter, so please report the transponder being on or off on the status page of AMSAT: http://www.amsat.org/status/ It does not appear in the table, but it does in the reporting drop-down.
73 and have FUN
Wouter Weggelaar, PA3WEG AMSAT-NL AMSAT-UK
Still active over North America on the 1549Z pass. Worked W2JV and WB8RJY, then switched over to AO-73 and worked two more stations. Nice back to back passes!
73,
Paul, N8HM
On Sat, Mar 26, 2016 at 5:25 AM, Wouter Weggelaar [email protected] wrote:
A quick update: the satellite hit its safe mode trigger and needs to be commanded back on. The safe mode flag has been cleared, so we just need to activate the transponder again.
Further clarification, we expect to switch back to normal operations after the Easter weekend. I am afraid my previous E-mail had a cut-and-paste error on the prolonged period of time *during Easter*.
Rest assured we are also still working on the permanent activation.
Wouter
On Fri, Mar 25, 2016 at 11:14 AM, Wouter Weggelaar [email protected] wrote:
Hi All,
Today, 25th of March 2016, the EO-79 transponder has been turned on for a prolonged period.
The FUNcube transponder subsystem on QB50p1 (EO-79) had been provided by AMSAT-UK and AMSAT-NL and is a similar subsystem as on FUNcube-1, but without the telemetry downlink circuitry.
The current software running on EO-79 does experience occasional reboots. When these reboots happen, the transponder is automatically turned off and will have to be turned back on by a command station. The FUNcube team has selected a few command stations to do so, but be advised the transponder may be off.
TLEs: AMSAT keps name: EO-79 Celestrak keps Name: QB50P1 Celestrak file: cubesat.txt NORAD # 40025 COSPAR designator 2014-033-R
Frequencies: Uplink: 435.035-435.065 MHz LSB Downlink: 145.935-145.965 MHz USB
EO-79 has been set to only beacon the normal AX.25 beacon every 30 seconds instead of 10 seconds. The beacon frequency is 145.815MHz and consists of AX.25 frames on BPSK. more details about the downlink can be found on the ISIS HAM page at http://isispace.nl/HAM/qb50p.html
Just like FUNcube-1, the crystal oscillator circuits exhibit drift with temperature. This means manual tuning will probably work best.
Lastly, the commanding team availability will be limited over Easter, so please report the transponder being on or off on the status page of AMSAT: http://www.amsat.org/status/ It does not appear in the table, but it does in the reporting drop-down.
73 and have FUN
Wouter Weggelaar, PA3WEG AMSAT-NL AMSAT-UK
Sent via [email protected]. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
participants (3)
-
Paul Stoetzer -
PY5LF -
Wouter Weggelaar