International Journal of Geophysics / 2012 / Article / Tab 1

Research Article

Seasonal and Local Time Variations of E-Region Field-Aligned Irregularities Observed with 30.8-MHz Radar at Kototabang, Indonesia

Table 1

Specifications of the VHF radar at Kototabang.

Location0.20°S, 100.32°E
 Dip latitude10.36°S

Operating frequency30.8 MHz

AntennaLinear array of 18 three-element Yagi antennas
 Gain22 dBi
 Beam width12° in azimuth (half-power full-width) 40° in zenith (half-power full-width)
 Beam steeringActive phase control Azimuthal beam directions between +54° and −54° at 13° step

TransmitterSolid-state pulse transmitter
 Peak power20 kW
 Average power1.5 kW
 Pulse width1–200 μs
 Subpulse width1, 2, 4, 8, 16 μs

ReceiverSingle coherent receiver
 A/D converter16 bit

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