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Re: FO-29 telemetry



  Hi Keith, N4ZQ

  I agree with you, however how can we prevent somebody to use the Satellite
into Eclipse?
 Fortunately, the Satellite comes into Eclipse over populated areas -like
Europe-  before and after the midnight, so the traffic is minimal. That's
good !

 On the other hand, there are several areas where the Satellite has a
terrible "jamming" on the Uplink, in the middle of the night.
 I have observed that, over M.East and W.Asia sometimes the Satellite is
fully noisy, FMing too.
Probably because the Satellite subzone between 145.8-146 MHZ is fully
occupied by pirates, old VHF wireless phones etc.
So, even without Ham-users,  sometimes the satellite is fully overloaded.
That is very bad in case where the Satellite is into Eclipse but, definitely
we can not much to do in order to prevent that.

  As I remember, this Satellite has a function for electric management 
(UVC),
in order to "Turn-ON" automatically the transponder, when came on Sunlight .
Unfortunately, on UVC appeared a malfunction  @ April'07.

Normally, if the batteries are discharged and the satellite comes into
Eclipse,  the transmitter is turned OFF by the UVC. It is designed so that 
later
an analog system transmitter becomes ON automatically when the terminal
voltages of the battery exceed a set value after the power is available from
the Solar Panels.
  However, it appears likely that a malfunction  occurs for this function, 
and the
terminal voltage cannot turn-ON the transmitter even if it exceeds the set
value - unless commanded from the JARL's ground station.

  Therefore, without UVC-function and by carrying 12 years old Batteries,
the Satellite is "naked".
Even without traffic from Ham-operators during the Eclipse, it is not
sure if that prolongs the FO-29's life.


73, Mak SV1BSX


----- Original Message ----- 
From: "Keith N4ZQ" <n4zq@netzero.net>
To: <sv1bsx@yahoo.gr>
Sent: Monday, July 28, 2008 3:25 PM
Subject: Re: [amsat-bb] Re: FO-29 telemetry


Very Interesting Data you collected, Mak.   Maybe it should be suggested
that if FO-29 is in eclipse, that it shouldn't be used. That might prolong
it's life. What do you think ?

Keith N4ZQ









-- "SV1BSX" <sv1bsx@yahoo.gr> wrote:
  Hi Domenico, i8CVS

last night I collected the Telemetry from FO-29.

Date 27 July 2008,  Orbit #58990.  AOS 21:27, TCA 21:34, LOS 21:41.

It is very interesting to point out that, the most part of TLM collected
into Eclipe !
If I am not wrong,  just the "Data1" is on Sunlight and the rest DATA on
Eclipse.
At 21:32 the FO-29 came on the dark,  2 minutes before the TCA.

The confirming of Sunlight on "Data1" is obvious also by Solar-Panel Current
(= 1000.0 mA).
Also the battery has the biggest Voltage (16.4 ).  In the next "Data 2,3,4,
5 & 6"  where the FO-20
was on Eclipse, the Solar-Panel Current is  just 9.8 mA.

 However,  the battery voltage is droped down from 16.4 V (Data1 on
Sunlight)
to 14.2 V  (Data 6 on Eclipse).  That means 2.2 Volts lower in about 5 mins.
  I can't  say if that is normal or not. It's just my notice and probably is
OK that but,
it should be very interesting if we can find an older TLM-Data into Eclipse
in order
to compare it with this one.

  Finally, the following data are 100% OK.  As you know dr Domenico,   I am
"old fashion"
CW operator by using pencil and paper, however  I  recorded  my reception
and I confirmed
it twice,  in order to eliminate any possible fault.



Here is the collected Telemetry DATA:

HI HI 22 E2 88 D5 8F 05 05 25 00 24 01 01 66 63 98 98 B0 5C B6 B1 B8 BA B9
HI HI 22 E2 88 D5 8F 05 05 25 00 24 01 01 01 83 8B 8A 95 85 B6 B0 B8 BA B9
HI HI 22 22 88 D5 8F 05 05 25 00 24 01 01 01 83 87 86 91 8B B6 B0 B7 B9 B9
HI HI 22 22 88 D5 8F 05 05 25 00 24 01 01 01 84 85 84 8F 7A B5 B0 B7 B9 B9
HI HI 22 22 88 D5 8F 05 05 25 00 24 01 01 01 83 85 83 8E 62 B5 B0 B7 B9 B9
HI HI 22 22 88 D5 8F 05 05 25 00 24 01 01 01 85 84 82 8D 95 B5 B0 B7 B9 B9


-------
 Data 1
---------
  Main Relay        ON    :  DCM               ON
  SRAM              OFF   :  Packet            OFF
  JTA               ON    :  JTD               OFF
  GAS               OFF   :
  SAS               OFF   :  UVC               ON
  UVC Level         1     :  PCU Mode          AUTO
  PCU Level         3     :  Battery Mode      TRIC
  Battery Logic     TRIC  :
  Digitalker Mode   OFF   :  UVC ACT/PAS       PAS
  CPU RUN/RESET     RUN   :
  Spin Period                 8356.0 [msec]
  Sun Angle                     72.5 [deg]
  GAS-Z                        490.2 [nT]
  GAS-X                        490.2 [nT]
  Solar Panel Current         1000.0 [mA]
  Battery Current              -59.6 [mA]
  Battery Voltage               16.4 [V]
  Battery Middle Voltage         7.3 [V]
  Bus Voltage                   17.3 [V]
  Analog Tx Power              499.9 [mW]
  Structure Temp. 1             11.2 [C]
  Structure Temp. 2             13.1 [C]
  Structure Temp. 3             10.4 [C]
  Structure Temp. 4              9.6 [C]
  Battery Cell Temp.            10.0 [C]

---------
 Data 2
---------
  Main Relay        ON    :  DCM               ON
  SRAM              OFF   :  Packet            OFF
  JTA               ON    :  JTD               OFF
  GAS               OFF   :
  SAS               OFF   :  UVC               ON
  UVC Level         1     :  PCU Mode          AUTO
  PCU Level         3     :  Battery Mode      TRIC
  Battery Logic     TRIC  :
  Digitalker Mode   OFF   :  UVC ACT/PAS       PAS
  CPU RUN/RESET     RUN   :
  Spin Period                 8356.0 [msec]
  Sun Angle                     72.5 [deg]
  GAS-Z                        490.2 [nT]
  GAS-X                        490.2 [nT]
  Solar Panel Current            9.8 [mA]
  Battery Current              567.6 [mA]
  Battery Voltage               15.0 [V]
  Battery Middle Voltage         6.6 [V]
  Bus Voltage                   14.6 [V]
  Analog Tx Power              766.4 [mW]
  Structure Temp. 1             11.2 [C]
  Structure Temp. 2             13.5 [C]
  Structure Temp. 3             10.4 [C]
  Structure Temp. 4              9.6 [C]
  Battery Cell Temp.            10.0 [C]

---------
 Data 3
---------
  Main Relay        ON    :  DCM               ON
  SRAM              OFF   :  Packet            OFF
  JTA               ON    :  JTD               OFF
  GAS               OFF   :
  SAS               OFF   :  UVC               ON
  UVC Level         1     :  PCU Mode          AUTO
  PCU Level         3     :  Battery Mode      FULL
  Battery Logic     FULL  :
  Digitalker Mode   OFF   :  UVC ACT/PAS       PAS
  CPU RUN/RESET     RUN   :
  Spin Period                 8356.0 [msec]
  Sun Angle                     72.5 [deg]
  GAS-Z                        490.2 [nT]
  GAS-X                        490.2 [nT]
  Solar Panel Current            9.8 [mA]
  Battery Current              567.6 [mA]
  Battery Voltage               14.5 [V]
  Battery Middle Voltage         6.5 [V]
  Bus Voltage                   14.2 [V]
  Analog Tx Power              805.4 [mW]
  Structure Temp. 1             11.2 [C]
  Structure Temp. 2             13.5 [C]
  Structure Temp. 3             10.8 [C]
  Structure Temp. 4             10.0 [C]
  Battery Cell Temp.            10.0 [C]

---------
 Data 4
---------
  Main Relay        ON    :  DCM               ON
  SRAM              OFF   :  Packet            OFF
  JTA               ON    :  JTD               OFF
  GAS               OFF   :
  SAS               OFF   :  UVC               ON
  UVC Level         1     :  PCU Mode          AUTO
  PCU Level         3     :  Battery Mode      FULL
  Battery Logic     FULL  :
  Digitalker Mode   OFF   :  UVC ACT/PAS       PAS
  CPU RUN/RESET     RUN   :
  Spin Period                 8356.0 [msec]
  Sun Angle                     72.5 [deg]
  GAS-Z                        490.2 [nT]
  GAS-X                        490.2 [nT]
  Solar Panel Current            9.8 [mA]
  Battery Current              587.2 [mA]
  Battery Voltage               14.3 [V]
  Battery Middle Voltage         6.4 [V]
  Bus Voltage                   14.0 [V]
  Analog Tx Power              694.9 [mW]
  Structure Temp. 1             11.6 [C]
  Structure Temp. 2             13.5 [C]
  Structure Temp. 3             10.8 [C]
  Structure Temp. 4             10.0 [C]
  Battery Cell Temp.            10.0 [C]

---------
 Data 5
---------
  Main Relay        ON    :  DCM               ON
  SRAM              OFF   :  Packet            OFF
  JTA               ON    :  JTD               OFF
  GAS               OFF   :
  SAS               OFF   :  UVC               ON
  UVC Level         1     :  PCU Mode          AUTO
  PCU Level         3     :  Battery Mode      FULL
  Battery Logic     FULL  :
  Digitalker Mode   OFF   :  UVC ACT/PAS       PAS
  CPU RUN/RESET     RUN   :
  Spin Period                 8356.0 [msec]
  Sun Angle                     72.5 [deg]
  GAS-Z                        490.2 [nT]
  GAS-X                        490.2 [nT]
  Solar Panel Current            9.8 [mA]
  Battery Current              567.6 [mA]
  Battery Voltage               14.3 [V]
  Battery Middle Voltage         6.3 [V]
  Bus Voltage                   13.9 [V]
  Analog Tx Power              538.9 [mW]
  Structure Temp. 1             11.6 [C]
  Structure Temp. 2             13.5 [C]
  Structure Temp. 3             10.8 [C]
  Structure Temp. 4             10.0 [C]
  Battery Cell Temp.            10.0 [C]

---------
 Data 6
---------
  Main Relay        ON    :  DCM               ON
  SRAM              OFF   :  Packet            OFF
  JTA               ON    :  JTD               OFF
  GAS               OFF   :
  SAS               OFF   :  UVC               ON
  UVC Level         1     :  PCU Mode          AUTO
  PCU Level         3     :  Battery Mode      FULL
  Battery Logic     FULL  :
  Digitalker Mode   OFF   :  UVC ACT/PAS       PAS
  CPU RUN/RESET     RUN   :
  Spin Period                 8356.0 [msec]
  Sun Angle                     72.5 [deg]
  GAS-Z                        490.2 [nT]
  GAS-X                        490.2 [nT]
  Solar Panel Current            9.8 [mA]
  Battery Current              606.8 [mA]
  Battery Voltage               14.2 [V]
  Battery Middle Voltage         6.3 [V]
  Bus Voltage                   13.8 [V]
  Analog Tx Power              870.4 [mW]
  Structure Temp. 1             11.6 [C]
  Structure Temp. 2             13.5 [C]
  Structure Temp. 3             10.8 [C]
  Structure Temp. 4             10.0 [C]
  Battery Cell Temp.            10.0 [C]


======================== END of  message  ==================




73 de Mak, SV1BSX





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