Oscar Echo Satellite
2 отговора
173 прегледа
Oscar Echo Satellite
На 29.06.2004 беше изстрелян новия радиолюбителски спътник Oscar Echo (Оскар Еко, или само Еко за по-кратко). Първият контакт с него е осъществен в 14:52UTC на 29.06 и е получена първата телеметрична информация, след което предавателя е бил изключен в 15:00 UTC. Честотата на която се предава телеметрията е 435.150 FM. Първоначалните данни за състоянието на спътника са добри и в рамиките на очакваното. Молбата на Amsat.org е да не се предава на работните честоти на спътника докато не се обяви пълната му готовност да работи в нормалните си режими. Повече информация за честоти и кеплеровите елементи могат да се намерят на [линк]
Остава само да слушаме. Очаква се да бъде интересен спътник подобен на спрелия преди време Dove 17 (ако не се лъжа за номерчето).
Повече информация ТУК
**************************************************************
SB SAT @ AMSAT $ANS-181.02
ECHO Contact Established
AMSAT News Service Bulletin 181.01 From AMSAT HQ
SILVER SPRING, MD. June 29, 2004
To All RADIO AMATEURS
BID: $ANS-181.01
First contact with Echo was at 1452 UTC on 29 June 2004. After collecting a
bit of TLM the 435.150 MHz transmitter was turned off at 1500 UTC. The
preliminary keps were observed to be pretty close. The first look at ECHO's
telemetry shows things are looking good. The battery was fully charged and
the panels were delivering about 950 ma, which is fine. The panels
were supporting the transmitter power adequately at about 2.3W output. The
bird appears to be tumbling as expected. Internal temperatures are around
10C which is also as expected.
On the second pass the loading of software began and good progress was made.
Telemetry continues to look very good. While fades clearly indicated we
continue to tumble (as expected), at 2.2 Watts output we were able to make
good bits without difficulty. Rather than turn the TX off at the end of
that pass, based on a very good looking power system, the power was turned
down to about 0.3 Watts.
The hour between passes was spent closely examining the captured telemetry
and comparing it to pre-launch testing, as well as tweaking the keps a bit.
At the start of the next pass the power will be turned back up and loading
the housekeeping software, a task which will continue on the evening passes
tonight, will resume. The TX has been left on at about 0.3W.
If you record telemetry please send the CSV files to [email protected].
Please do not transmit to Echo until checkout and commissioning has been
completed and the satellite is made available for general use. Unexpected
uplinks may cause delays in verifying the proper operation of ECHO and delay
the opening of the transponders to general use.
[ANS thanks Jim, WD0E, for the above information]
/EX
----
Via the ans mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe ans" to [email protected]
************************************************************
SB SAT @ AMSAT $ANS-182.01
ECHO First Day Summary
AMSAT News Service Bulletin 182.01 From AMSAT HQ
SILVER SPRING, MD. June 30, 2004
To All RADIO AMATEURS
BID: $ANS-182.01
First contact with Echo was during the pass 1452-1500 UTC on 29 June 2004.
The first look at ECHO's telemetry shows things are looking good. The
battery, solar panels and temperatures were all as expected.
Initially the transmitter power output was set to approximately 2.2 Watts
during commanding sessions. Based on a very good looking power system, the
transmitter has been able to be left turned on with the power turned down.
During the second set of passes approximately twelve hours later, the
command team finished loading the housekeeping software. The housekeeping
task is up and running as of 30 June 2004 at 0525 UTC. With more data
available on the power systems performance the transmitter has now been left
at about 1.2W.
The morning passes on 30 June will concentrate on gathering telemetry. The
evening passes then will continue with checkout activities.
A telemetry decode program, TLMEcho, is available for those who would like
to view and report data from Echo. It may be downloaded from AMSAT.ORG in
the Echo project area, [линк]
If you record telemetry data please send the CSV files to [email protected].
Please do not transmit to Echo until checkout and commissioning has been
completed and the satellite is made available for general use. Unexpected
uplinks may cause delays in verifying the proper operation of ECHO and delay
the opening of the transponders to general use.
[ANS thanks Jim, WD0E, for the above information]
/EX
----
Via the ans mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe ans" to [email protected]
Остава само да слушаме. Очаква се да бъде интересен спътник подобен на спрелия преди време Dove 17 (ако не се лъжа за номерчето).
Повече информация ТУК
**************************************************************
SB SAT @ AMSAT $ANS-181.02
ECHO Contact Established
AMSAT News Service Bulletin 181.01 From AMSAT HQ
SILVER SPRING, MD. June 29, 2004
To All RADIO AMATEURS
BID: $ANS-181.01
First contact with Echo was at 1452 UTC on 29 June 2004. After collecting a
bit of TLM the 435.150 MHz transmitter was turned off at 1500 UTC. The
preliminary keps were observed to be pretty close. The first look at ECHO's
telemetry shows things are looking good. The battery was fully charged and
the panels were delivering about 950 ma, which is fine. The panels
were supporting the transmitter power adequately at about 2.3W output. The
bird appears to be tumbling as expected. Internal temperatures are around
10C which is also as expected.
On the second pass the loading of software began and good progress was made.
Telemetry continues to look very good. While fades clearly indicated we
continue to tumble (as expected), at 2.2 Watts output we were able to make
good bits without difficulty. Rather than turn the TX off at the end of
that pass, based on a very good looking power system, the power was turned
down to about 0.3 Watts.
The hour between passes was spent closely examining the captured telemetry
and comparing it to pre-launch testing, as well as tweaking the keps a bit.
At the start of the next pass the power will be turned back up and loading
the housekeeping software, a task which will continue on the evening passes
tonight, will resume. The TX has been left on at about 0.3W.
If you record telemetry please send the CSV files to [email protected].
Please do not transmit to Echo until checkout and commissioning has been
completed and the satellite is made available for general use. Unexpected
uplinks may cause delays in verifying the proper operation of ECHO and delay
the opening of the transponders to general use.
[ANS thanks Jim, WD0E, for the above information]
/EX
----
Via the ans mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe ans" to [email protected]
************************************************************
SB SAT @ AMSAT $ANS-182.01
ECHO First Day Summary
AMSAT News Service Bulletin 182.01 From AMSAT HQ
SILVER SPRING, MD. June 30, 2004
To All RADIO AMATEURS
BID: $ANS-182.01
First contact with Echo was during the pass 1452-1500 UTC on 29 June 2004.
The first look at ECHO's telemetry shows things are looking good. The
battery, solar panels and temperatures were all as expected.
Initially the transmitter power output was set to approximately 2.2 Watts
during commanding sessions. Based on a very good looking power system, the
transmitter has been able to be left turned on with the power turned down.
During the second set of passes approximately twelve hours later, the
command team finished loading the housekeeping software. The housekeeping
task is up and running as of 30 June 2004 at 0525 UTC. With more data
available on the power systems performance the transmitter has now been left
at about 1.2W.
The morning passes on 30 June will concentrate on gathering telemetry. The
evening passes then will continue with checkout activities.
A telemetry decode program, TLMEcho, is available for those who would like
to view and report data from Echo. It may be downloaded from AMSAT.ORG in
the Echo project area, [линк]
If you record telemetry data please send the CSV files to [email protected].
Please do not transmit to Echo until checkout and commissioning has been
completed and the satellite is made available for general use. Unexpected
uplinks may cause delays in verifying the proper operation of ECHO and delay
the opening of the transponders to general use.
[ANS thanks Jim, WD0E, for the above information]
/EX
----
Via the ans mailing list at AMSAT.ORG courtesy of AMSAT-NA.
To unsubscribe, send "unsubscribe ans" to [email protected]
Редактирано от Ramirez на
UO-14
HISTORY
In November 2003 UO-14 was declared officially non-operational. The Mission Control Centre at the Surrey Satellite Technology Ltd (SSTL) Center for Satellite Engineering Research reported it has reached the end of its mission after nearly 14 years in orbit. Since launch, UO-14 completed over 72,000 orbits and as many charge/discharge cycles of its on-board NiCd battery. It was determined one of the battery cells became exhausted and could no longer support continuous operation of the repeater. UO-14's transmitter would shut down shortly after it was commanded "on" due to undervoltage, so the microsatellite's mission was terminated.
In November 2003 UO-14 was declared officially non-operational. The Mission Control Centre at the Surrey Satellite Technology Ltd (SSTL) Center for Satellite Engineering Research reported it has reached the end of its mission after nearly 14 years in orbit. Since launch, UO-14 completed over 72,000 orbits and as many charge/discharge cycles of its on-board NiCd battery. It was determined one of the battery cells became exhausted and could no longer support continuous operation of the repeater. UO-14's transmitter would shut down shortly after it was commanded "on" due to undervoltage, so the microsatellite's mission was terminated.