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difficulties often evidenced due to this factor.
Casual listeners using a normal  435  MHz  receiver  will  not  hear  tonal
frequencies as such, but may notice a slight audio  content  with  elevated
'S' meter readings.
                                       Pat Gowen,  G3IOR   1 May 1992
20441.SAT
    CHARACTERISTICS of WEBERSAT-OSCAR 18  (WO-18)
   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 preferably with Varactor Drive.  AFC is not required  as  the  modem
tracks the Doppler shift up and down by 'clicks'.
   WEBERSAT has a Impact Detector, sends picture images,  and  Whole  Orbit
Data (WOD) thus providing a high scientific research user basis.
   To demodulate you will need a  BPSK Modem and a modified  TNC  with  the
original Modem disconnected. The software and micro  requirements  are  the
same as those recommended for  U-O-14. Modems recommended by G4WFQ for 1200
bps BPSK are G3RUH JAS-1, Pac-Comm PSK-1, TAPR PSK Modem, LL Grace  DSP-12,
and DSP-2232. Modems suitable for 9600 bps FSK are G3RUH,  Pac-Comm  NB-96,
Kantronics DE9600, Tasco TMB-965, K9NG, Gracelis PackeTwin, LL Grace DSP-12
and DSP-2232.
   Software requirements for WEBERSAT:  Capture RAW KISS data with any dumb
terminal program that stores frames to disc,  without  stripping  8th  bit,
i.e. TLMDC-11, YAPP-B, etc.
   'WEBERWARE 1.0', available from AMSAT-UK, London, E12 5EQ, will  process
and display the camera picture images.
   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.
    FREQUENCIES used for WEBERSAT-OSCAR 18 (WO-18)
    Downlink (PSK)      437.0751 MHz (BPSK/SSB)
    Downlink (RC)       437.1020 MHz (BPSK/SSB)
    Uplink ATV (NTSC)  1265.000 MHz (TV/AM)
                                      Pat Gowen,  G3IOR   1 May 1992
20437.SAT
          CHARACTERISTICS of OSCAR-14 (Uo-14 or UoSAT-D)
  This satellite, also known as UoSAT-D, was  designed  and  built  by  the
UoSAT University of Surrey AMSAT Group. It was launched with  the  microsat
cluster with the ARIANE SPOT-II launch from Kourou in January 1990.
  It runs on 9600 bauds which requires a G3RUH (or  K9NG)  modem  for  this
very high baud rate  speed, and a modified  TNC  with  the  original  modem
disconnected. (The TNC-320 and PK-232 are not recommended).  An  IBM  micro
with PG software or an ATARI with PE1HCL.NET software running completes the
needs for 9600 bauds operation.
  For the 145 MHz FM uplink use a 5 element cross or  circularly  polarized
Yagi from a 25 watt transmitter with direct modulation of the varactor. The
435 MHz FM receiver must possess 20 KHz bandwidth  and  have  output  taken
direct from the discriminator. The receive antenna ideally needs  to  be  a
435 MHz 12 X/Y or multibeam. Both antennas require azimuth-elevation  track
pointing.
      FREQUENCIES and MODES for UoSAT-OSCAR 14  (UO-14)
Uplink              145.975 MHz (FSK/FM) 9600 bps PSK AX.25.
Downlink 1          435.070 MHz (FSK/FM) .
Downlink 2          435.070 MHz (AFSK/FM) 1200 bps AFSK etc.
NOTE: At this point in time UoSAT-D is in use for third world support  VITA
and  SATELIFE  mission  medical  communications  on   specially   allocated
frequencies just outside our 435 and 145 MHz  amateur  bands.  The  heavier
load of amateur traffic is now provided exclusively on UO-22  which  has  a
greater memory capacity and two uplink frequencies.
                                Pat Gowen,  G3IOR   27 April 1992
21089.SAT
            CHARACTERISTICS of RS-12/13
   RS-12 and 13 were launched at 0236 UTC on February 5 1991 into a 1019 Km
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