Intro:

• sband2tone, sband2toneswp tcl procedures in atm/gen
• on 24th started logging the freq steps to /home/online/msgs/sband2tone.log
• sband power in /home/online/lro/pwrdata.log.xxxx
  

Notes on running the 2 xmiters together

• normal config, ch 7.5,dome 1.07 the sband will trip with turnstile power fault when 430 gets to about 1MW. Seemed to run ok at 950 kw.
• If sband xmiter not over the turret then get lots of antenna reflected power in sband when 430 xmitting (even at  600 kw).
• Body current goes up as tones separate
• trying to step 0 .25, .5 mhz separation caused all hell to break loose with the band sensors. especially the rf drive values that are read back,. Looking at the spectrum analyzer, we have lots of harmonics/intermods when step is .25 Mhz,.
• got the sband up to 660Kw at the end.
  

Setup:

• sband tx setup:
• vxWorks tclProcedure: sband2tone  deltaFreqMhz
• will set synth 5,6, and 8 to external output, 14dbm
• synth 5 freq: 230 - deltaFreq/2
• synth 6 freq: 230 + deltaFreq/2
• (you may have to run addprocatm gen    to get the procedure loaded in tcl)
• filter:
• the sband exciter box:
• 5 mhz filter removed, 260 40 Mhz filter installed.
  
• cabling:
• synth 5,6 local output ports to spliter (used as combiner) and then over the racks to 230Mhz input of sband exciter box (bottom of rack).
• synth 8 local output port to sband exciter 20 Mhz input.
• Levels:
• each tone level was 4.4 dbm after the splitter (at end of cable that goes into exciter box)
• 250 test tone output (front panel of exciter box).. about -29 dbm each tone (the single tone value is normally around -24 dbm).
• 430 setup:
• regular plasmaline setup (as well as ion line)

Data acquisition:

22sep15:

Summary:

• continuous sband transmission then
• 3 minute sband on,off
• then move azimuth 267 to 269
• az 268, dome: 1.07, ch 7.5 deg.
  
• at .0083333 deg/sec
• sband power (about 500 kw)
• 430 power about 950 kw

When we did things:  (all times are AST)

All S-Band power measurements are via lro power meter (getp command)

20:30:00 - S-Band RF ON, 6MHz separation - time +/- 1 min
20:32:05 - S-Band 500kW - 430MHz not recorded
20:34:05 - S-Band 498kW - 430MHz not recorded
20:40:50 - S-Band 491kW - 430MHz 930kW
20:48:16 - S-Band 484kW - 430MHz 940kW
21:00:05 - S-Band 475kW - 430MHz 940kW
21:15:30 - S-Band 468kW - 430MHz 960kW
21:18:00 - S-Band RF OFF - 430MHz 940kW - begin S-Band RF toggle@3min intervals
21:21:00 - S-Band RF ON - 430MHz 935kW
21:24:00 - S-Band RF OFF - 430MHz 948kW
21:27:00 - S-Band RF ON - 430MHz 949kW
21:30:00 - S-Band RF OFF - 430MHz not recorded
21:33:00 - S-Band RF ON - 430MHz 960kW
21:34:15 - S-Band 464kW - 430MHz 950kW
21:36:00 - S-Band RF OFF - 430MHz 955kW
21:39:00 - S-Band RF ON - 430MHz not recorded
21:42:02 - S-Band RF OFF - 430MHz 960kW
21:45:00 - S-Band RF ON - 430MHz 950kW
21:48:01 - S-Band RF OFF - 430MHz 940kW
21:51:00 - S-Band RF ON - 430MHz 950kW
21:51:40 - S-Band 464kW - 430MHz 953kW
21:54:01 - S-Band RF OFF - 430MHz 958kW
21:57:00 - S-Band RF ON - 430MHz 959kW
22:00:00 - S-Band RF OFF - 430MHz 970kW
22:04:01 - S-Band RF ON, 6.5MHz separation - 430MHz 950kW - S-Band RF continuous
22:18:20 - S-Band 455kW - 430MHz 960kW
22:29:00 - S-Band 455kW - 430MHz 960kW
22:40:20 - S-Band 455kW - 430MHz 965kW
23:13:07 - S-Band 453kW - 430MHz 930kW
22:52:00 - started moving azimuth 167 to 169 deg at .0083333 deg/sec till end of run.
23:30:00 - switched to delt freq=6Mhz.
23:31:40 - S-Band 449kW - 430MHz 923kW
23:55:20 - S-Band 447kW - 430MHz 941kW
23:55:56 - S-Band RF OFF - 430MHz RF OFF - End of run

plasmaline movie for the night

fof2 measurements from cayey digisonde (.ps) (.pdf)

• AST is UTC-4HRS.
  
• fof2 for the experiment (20:30 to 24:00 22sep15) is the blue trace 00:30 to 04:00 utc
• fof2 started at 6Mhz, went up to 6.7 mhz and then down to a little under 6 Mhz at the end
  

23sep15.. 2nd night

Summary:

• az 168, dome:1.07 deg, ch 7.5 deg.
  
• Used 1 MHz separation to excite the gyro line
• switched to .95 Mhz
• switched to 1.05 Mhz
• switched to 3 MHz separation (excite highest gradient in the plasma line vs height)
• back to 5.7 Mhz separation
• started swinging the azimuth 167 to 169 deg at .0083333 deg/sec
  
• switched to 5.4 Mhz separation
  

when we did things: (all times AST)

fof2 measurements from cayey digisonde (.ps) (.pdf)

• AST is UTC-4HRS.
  
• fof2 for the experiment (21:00 to 24:00 23sep15) is the blue trace 01:00 to 04:00 utc

24sep15 : 3rd night

Summary:

• new routine (atm/gen/sband2toneswp startdif enddif difstep dwell) to step through freq ranges).
  
• start az 168 (at 20:33) ,dome: 1.07 , ch=7.5 deg
• step 1 to 1.2 mhz in .02 mhz steps, dwell 60 secs. 430: about 950Kw, sband: 500Kw
• step 3 to 3.6 Mhz at .06 mhz steps.
• sband power to 660 Kw
• swing az around to 348
• xmit single 2380 tone for 5 minutes
  
• sit 1 mhz for 20 minutes
• xmit single 2380 Mhz tone for  5 minutes
• set 3 mhz for 20 minutes
  

when we did things: (all times AST)

• AST is UTC-4HRS.
  
• fof2 for the experiment (20:30 to 24:00 23sep15) is the blue trace 00:30 to 04:00 utc

06jun16:

    During the day we tried to run the sband xmter with the hf heater.

• When the hf got to 30Kw/transmitter, the sband tx would shut itself down (even when it was only in standby mode). Looks like the 5.1 mhz was getting into the control/monitor circuitry of the sband controller upstairs.

During the evening we ran the sband transmitter. We used an SEE receiving system (paul bernhardt's located at cristiano's house is camuy) as well as the optical equipment in the photometer shack. The 430 transmitter was not used.'

When we did things:

 home_~phil