Gene, Danny:

This is my recommendation for the MEX bistatic radar operation Sunday
morning.

For this experiment, the spacecraft attitude is fixed; so there will be a
surface echo for no more than 10 minutes.  LCP will be stronger than RCP; but
both may be so weak we will have trouble seeing them in real time.

Since Earth-Mars distance is large and continues to increase, it is time to
change the X-RCP FGAIN setting.  FGAIN = 60 dB on all channels makes sense.

We need to use a FRO for both S- and X-Band; on X-Band these will be
different for 25 and 100 kHz and they will be entered at different times.

Dick

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2006/092
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14:05  Begin Pre-cal at DSS 63
       FGAIN = 60 dB (all channels)
       FRO_x = 0; FRO_s = 0 (changes later)
       Start 4-channel 25 kHz recordings after Step 4
       Stop 25 kHz recording after Step 18

16:05  Begin of track (DL = ??; TX may be off)

16:10  Begin 4-channel 25 kHz recordings (SCHAN 3)

16:17  Occultation ingress

16:29  Periapsis (spacecraft in occultation)

16:33  Occultation egress (DL = X+S; X-Band TLM ON)

16:40  X-Band TLM OFF

16:45  FRO_X = -26000 Hz (SCHAN 4)
       FRO_S =  -7000 Hz (SCHAN 3 and 4)

17:00  Begin Slew #1

17:05  FRO_X = -46000 Hz (SCHAN 3)

17:10  Begin Mini-Cal #1

17:25  End Mini-Cal #1 (end of Step 5)

17:29  End Slew #1

17:45  Begin 4-channel 100 kHz recordings (SCHAN 4)

18:00  Maximum echoes (LCP > RCP, but both very weak)

18:15  End 100 kHz recordings (SCHAN 4)

18:30  Begin Slew #2 (back to Earth point)

18:35  Begin Mini-Cal #2

18:50  End Mini-Cal #2 (end of Step 5)

18:55  FRO_x = 0 (SCHAN 3 and 4)
       FRO_s = 0 (SCHAN 3 and 4)

19:00  End Slew #2
       DL = X+S

19:05  Begin Post-Cal (10 minutes early)

20:15  End of activity (if not sooner)
       Stop 25 kHz recordings