February 19, 2002

VHF  operation memorandam for February 19, 2002 BY S. Nozawa

Experiment name:  dlayer_Heat_NI  (D-region measurement with Heating)
    
�@�@To investigate the response of an artificial heating of the ionosphere

�@�@ Ionospheric Stimulation by an High Power Radio Wave  
       Cosmic radio waves and ground based pressure waves are detected to  
       investigate the response of an artificial heating of the ionosphere.  

elan files: /kst/exp/dlayer_Heat_NI
Pulse scheme: dlayer-v
Start time: 17:00 UT on February 19, 2002
End time: 23:00 UT on February 19, 2002
Participants:  Satonori Nozawa,  Kazuhiro Adachi, and Hiroyuki Iwahashi


Before our experiment:  test of CP-7 (?)
After our experiment:  Nothing

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Note: (time in UT)
February 19

16:42           try to get started, but it failed.
                    something wrong with EROS3: EROS3 did not come up.
                    puny was rebooted by assar

17:21            START    (enablerec; kir enablerec; sod eneablerec)

17:25            stop and reSTART
                     rtg
                     rtpoke tx power_watts 2900000

17:30 about    rtpoke tx power_watts 3050000
                     (check the HV and guess the power from the figure showing Power/HV)

											According to mike, heating was started at 16:50 with 2min on/off at
                     about 4 MHz.

19:16             HRP
19:23             recovered  
                      rtpoke tx power_watts 2970000

22:00 about   3070000

23:00             end


Heating modurations (on/off)  at 4.04 MHz with a power of about 90 kW

16:50  30sec on/off
17:20   1min
18:00   2min
18:40   4min
18:40    10min

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Summary:
Tx power (3000 kW).  
Relatively clear sky in the beggining, but it is low geomanetical activity.
However, at 20:00-21:00 LT, aurora showed up!

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