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            ,----> \ 2K         3 !     /
            !      /           ,--!+  / ! 4
            !      \           !  ! /   !
            !      !           !  `     !
            `------o-----------'        o -V   V= +/- 5 to 15 V
                   !
                 -----
                  ---     Audio Filter for SARA Telemetry Decoding.
                   -
   Reception  reports  are  welcomed  and  will be  QSL'd,  and  further
information is available from BELAMSAT, ON1KHP,  Thier  des  Critchions  2,
4032 CHENEE, Belgium, who also publish 'BELAMSAT SATELLITE NEWS' magazine.
                                     Pat Gowen,  G3IOR  27 April 1992
20439.SAT
     INFORMATION ON PACSAT, OSCAR-16, A-O-16, Indicator PACSAT-12.
   This satellite is one of the family of the MICROSATS launched by ESA
from Kourou with the SPOT-II satellite in January 1990. Antennas as for
those used for UO-14 (UoSAT-OSCAR-22) are recommended with a similar 145
MHz TX. The 435 MHz SSB receiver needs to be equipped with AFC.
   It runs a BBS, transmits 1200 bps AX.25 PSK on a  frequency  of  437.025
MHz, and has uplinks at  145.900,  145.920,  145.940  and  145.960  MHz.  A
special PSK modem TNC adaptation is required. As for all  these  microsats,
antennas as used and given for UO-14 are recommended. The 145 MHz FM Tx  is
as for UO-14, with varactor drive desirable. 100 watts of FM is recommended
as an uplink. e.g. 10w to a 10 dB gain preferably circularly polarised  az-
el adjustable 2m antenna. A Helix 10T or similar gain circularly  polarised
10 - 14 dB gain 435 MHz receiving  antenna is recommended.
  The 435 MHz SSB Rx needs to be equipped  with AFC. Use a G3RUH FUJI  BPSK
modem and a modified TNC with the original modem disconnected. The software
and micro may be as for UO-14. For the AO-16  2400  MHz  downlink  only,  a
simple helix can be used going to a 13cm/2m or 10m converter, with the same
modem and TNC as used for 435 MHz reception.
   PC Software such as the PG.EXE programmes is  needed  (for  transmission
and reception), or PB.EXE for the numerous files reception. The server line
are needed to access is:
                                 bbscall pacsat-11
   Change your normal TNC parameters to:    FRACK 6
                                            MAXF 1
   Telemetry aquisition and  display  of  A-O-16,  18,  19  and  U-O-22  is
performed by 'DTLM.EXE' written  by  Jeff  Ward,  G0/K8KA,  available  from
AMSAT-UK, London, E12 5EQ.
                                          Pat Gowen,  G3IOR  1 May 1992
21575.SAT
     CHARACTERISTICS of OSCAR-22 (UoSAT-F) (UoSAT-5) (U-O-22)
   This gravity gradient stabilized  satellite  is  yet  another  from  the
University of Surrey AMSAT Group's stable. It was launched with SARA-OSCAR-
23 into a 780km high 98 degree inclination orbit by ESA on ARIANE.   It  is
fundamentally similar to UoSAT-14, but has a greater memory  capacity  (512
KBytes providing 800 messages) and two seperate uplink frequencies.  Please
see the details for OSCAR-14 (U-O-14) for the  transmit,  receive,  antenna
and ancillary equipment needs for this satellite, which like UoSAT-14  also
sends AX.25 data at 9600 bps on the downlink. Similar programs may be used.
   UO-22 also carries a camera with a  110  degree  wide-angle  lens  which
gives a broad field of view, this giving superb  earth  pictures  broadcast
using the PACSAT protocol. Images represent an earth  coverage  of  1600  x
1800 km. Each image is 578 x 576 pixels, giving a ground resolution of some
2 Km. (A pixel is 8 bits, giving a black and  white  image  with  256  grey
levels).
   Telemetry aquisition and  display  of  A-O-16,  18,  19  and  U-O-22  is
performed by 'DTLM.EXE' written  by  Jeff  Ward,  G0/K8KA,  available  from
AMSAT-UK, London, E12 5EQ.
                UoSAT-F FREQUENCIES:
Single Channel Downlink on  435.120 MHz,  9600  bps  FSK,  (1200  bps  AFSK
backup) with commandable 5 or 2 watts of power.
Uplinks: 145.900 and 145.975 MHz. (Geoff Ward, G0/K8KA, controller  at  the
Unversity of Surrey recommends broadcast requests and other  PB  operations
on 145.900 MHz whilst uploaders use 145.975 MHz). Uplink is  9600  bps  FSK
(1200 bps AFSK backup).
N.B.:  Note that this satellite  is  highly  popular  for  forwarding  long
distance packet radio messages, and  is  hence  in  high  use  with  access
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