JARL says: The eclipse rate of FO-29 suddenly changes from January to February, but it seems that the possibility of consecutive operation is low, because the malfunction occurs in the battery control circuit.
But we make a temporary operative plan and operate it, because there is the possibility of the spontaneous cure to be before approximately 2 years. When the surplus occurred for the electricity income and expenditure, we review an operative plan and do it.
It is operated until time to be OFF by UVC after a transmitter turned ON on the following date and time.
Jan. UTC 16 21:00- 22 22:33- 24 10:35- 29 21:25- 31 09:30-
Feb. UTC 5 22:00- 7 10:00- 11 11:40- 12 20:53- 14 10:40-
It does not limit the use of the analog system transponder, but please do uplink with the reasonable power. We may cancel the use of the next day depending on the situation of the examination use.
JE9PEL, Mineo Wakita
Mineo,
Thanks for this schedule.
Will the transmitter be ON for a specific amount of time? How can we determine when the transmitter will go OFF?
Thanks, David
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Mineo Wakita Sent: Thursday, January 14, 2010 3:11 AM To: amsat-bb@amsat.org Subject: [amsat-bb] FO-29 schedule Jan, Feb.
JARL says: The eclipse rate of FO-29 suddenly changes from January to February, but it seems that the possibility of consecutive operation is low, because the malfunction occurs in the battery control circuit.
But we make a temporary operative plan and operate it, because there is the possibility of the spontaneous cure to be before approximately 2 years. When the surplus occurred for the electricity income and expenditure, we review an operative plan and do it.
It is operated until time to be OFF by UVC after a transmitter turned ON on the following date and time.
Jan. UTC 16 21:00- 22 22:33- 24 10:35- 29 21:25- 31 09:30-
Feb. UTC 5 22:00- 7 10:00- 11 11:40- 12 20:53- 14 10:40-
It does not limit the use of the analog system transponder, but please do uplink with the reasonable power. We may cancel the use of the next day depending on the situation of the examination use.
JE9PEL, Mineo Wakita
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As I understand it from Mineo's postings, when the battery voltage on FO-29 hits a certain set point the satellite turns off. By design it should turn back on when the voltage recovers, but that part is malfunctioning. This makes it impossible to accurately determine how long the transponder will stay on, because it is dependent on use as well as other parameters.
For those that remember FO-20's last months of operation, the transponder would often be on until someone used too much power on the uplink, or there were too many users and it would then shut off. Later as the voltage recovered it would turn back on. At the end it was only operational while illuminated. I think FO-29 is behaving the same way, except it requires command intervention to turn back on.
Is this essentially correct Mineo?
73, Drew KO4MA
Hello Mineo Wakita,
This evening 22-01-2010 22:56 UTC FO-29 was again loud and clear in JO21
AOS: 22:57 UTC LOS: 23:05 UTC
If made a recording from the pass: 2 min beacon and one CQ on the transponder, there where no other amateurs active :(
http://www.ham.vgnet.nl/downloads/FO-29-22012010-2256UTC.mp3
73 PE0SAT - Jan
----- Original Message ----- From: "PE0SAT" pe0sat@vgnet.nl To: "Mineo Wakita" ei7m-wkt@asahi-net.or.jp Cc: amsat-bb@amsat.org Sent: Saturday, January 23, 2010 12:16 AM Subject: [amsat-bb] Re: FO-29 schedule Jan, Feb.
Hello Mineo Wakita,
This evening 22-01-2010 22:56 UTC FO-29 was again loud and clear in JO21
AOS: 22:57 UTC LOS: 23:05 UTC
If made a recording from the pass: 2 min beacon and one CQ on the transponder, there where no other amateurs active :(
http://www.ham.vgnet.nl/downloads/FO-29-22012010-2256UTC.mp3
73 PE0SAT - Jan
Hi Jan, PE0SAT
Probably there where no other amateurs active because VO-52 was in range at the same time and when I tryed at the end of his pass to switch from VO-52 into FO-29 it was about at LOS.........too late for me !
By the way the beacon seems to be nominal particularly when you switched ON the narrow CW filter and also your SSB signal considering that only one user was in the passband was very good and readable.
See you on FO-29 the next opportunity
73" de
i8CVS Domenico
participants (5)
-
Andrew Glasbrenner -
David Wing -
i8cvs -
Mineo Wakita -
PE0SAT