Notes of the Tromso UHF and heater observations
               (Last updated on Feb. 24, 2007.)

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EISCAT UHF radar:

Pulse code:
 arc1
Antenna mode:
 sweep_pattern.elan (puny:/kst/exp/ni/arc1/scans/)
 Cycle period is 60 sec.
 EL: 59-89 deg
 AZ: 180 deg
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2007/02/16 10:00-12:00 UT (2 hours, UHF and Heater):
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UHF radar:
- Tx power: 1600 kW

Heater:
- Polarization: O mode,
- Direction: -12 deg
- Frequency: 4.04 MHz
- Power: 85 kW
- Array: 2
- start from 10:02 UT, 2min on, 2min off.
- Tx8 power variable

Electron density in the F-region was low (1.5*10^11 m^-3).
Cannot see heater signetures clearly.
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2007/02/23 09:00-12:10 UT (3 hours, UHF and Heater):
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UHF radar:
- 09:00-12:00 UT
- Tx power: 1600 kW
- Crowber (Tx of the UHF radar was 0 kW):
  0931:10-0932:10 UT
  1121:32-1122:00 UT
  1156:45-1158:20 UT

Heater:
- Polarization: O mode,
- Direction: -12 deg
- Power: 85 kW (x9)
- Array: 1 and 2

Time (UT)     Freqency,  Array,  Heater on/off
0910-0932    5.423 MHz, array1,  4min on, 2 min off
0940-0942:15 4.913 MHz, array2,  CW (tune)
0946-1002    4.913 MHz, array2,  4min on, 2 min off
1004-1014    5.423 MHz, array2,  4min on, 2 min off
1016-1126    4.913 MHz, array2,  4min on, 2 min off
1028-1208    4.544 MHz, array2,  4min on, 2 min off

Heater on (UT):
0910-0914 
0916-0920
0922-0926
0928-0932
0940-0942
0946-0950
0952-0956
0958-1002
1004-1008
1010-1014
1016-1020
1022-1026
1028-1032
1034-1038
1040-1044
1046-1050
1052-1056
1058-1102
1104-1108
1110-1114
1116-1120
1122-1126
1128-1132
1134-1138
1140-1144
1146-1150
1152-1156
1158-1202
1204-1208


Electron density in the F-region was about 3*10^11 m^-3.
Heater signetures were clearly seen in Te plot.


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2007/02/26 10:00-12:00 UT (2 hours, UHF and Heater):
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In coopeoration with Leicester University (Darren Wright).

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2007/02/27 10:00-12:00 UT (2 hours, UHF and Heater):
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In coopeoration with Leicester University (Darren Wright).