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PE62101F
4
SBI1
4
WUPL46431008
FISCAL YEAR 93
3
GREENLAND
3
*METEOR BURST COMMUNICATIONS
2
Astrophysics
2
Atmospheric Physics
2
COMMUNICATION
2
FREQUENCY
2
IONOSPHERE
2
LOW FREQUENCY
2
METEOR SCATTER
2
PROPAGATION
2
SIGNALS
2
*ATMOSPHERIC PHYSICS
1
*IONOSPHERIC DISTURBANCES
1
*METEOR SCATTER COMMUNICATIONS
1
*METEORS
1
*POLAR CAP ABSORPTION
1
*RADIO LINKS
1
*REFLECTIVITY
1
*SOLAR ACTIVITY
1
*SOLAR DISTURBANCES
1
ABSORPTION
1
ARTIFICIAL SATELLITES
1
ATMOSPHERIC DENSITY
1
ATMOSPHERIC SOUNDING
1
BER(BIT ERROR RATE)
1
BPSK(BINARY PHASE SHIFT KEYING)
1
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