Equipment

Acoustic generators

Stationary generator

Parameters

Acoustic pressure integral level, dB	-	165
Radiated frequencies, Hz	-	600 і 624
Differencial frequency, Hz	-	24
Acoustic efficiency, %	-	up to 30
Maximum electric power, kW	-	110
Engines	-	electric motors
Engine control	-	remote

Mobile generator

Parameters

Acoustic pressure integral level, dB	-	up to 170
Acoustic radiation bandwidth, Hz	-	210 ÷ 260
Acoustic efficiency, %	-	up to 25
Maximum power, kW	-	570
Engine	-	multifuel, V-46
Engine control	-	remote
Transportation	-	Ural-375D

Both generators can be used for the fundamental researches of the lithosphere-ionosphere relations, infrasonic influence on the atmosphere, discovering the ionospheric disturbances and for the monitoring of ionosphere from space and ground.

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Electromagnetic field variation measurements

An active low-frequency magnetic antenna МА-1F

Parameters

Fequency bandwidth, Hz	-	10 ÷ 10000
Conversion factor, V•m/А	-	8 ÷ 15
Sensitivity threshold, mA/m•(Hz)^1/2	-	330 ÷ 3.8
Notch filter, Hz	-	50
Power supply, V	-	12
Current consumption, mА	-	< 40

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Electric field variations measurements

Electric field variations meter VЕP-4а

Parameters

Frequency bandwidth, Hz	-	4 ÷ 40
Power supply, V	-	12
Current consumption, mА	-	24

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Infrasonic measurements

Infrasound meter VІ-2

Parameters

Frequancy bandwidth, Hz	-	0.01 ÷ 1
Fading out bandwidth, dB/octave	-	from 10
The maximum acoustic pressure level at the 3% harmonic coefficient, dB	-	up to 135
Average sensitivity, mV/Pa	-	50
The basic error of acoustic pressure to voltage converting, dB	-	< 0.3
Noise level as acoustic pressure equivalent, dB	-	< 60
Power	-	two accumulators 12V, 1.2 Аh
Time of continuous work, hours	-	10

Infrasound meter VІ-3

Parameters

Fequency bandwidth, Hz	-	1 ÷ 10
Fading out bandwidth, dB/octave	-	23
The maximum acoustic pressure level at the 3% harmonic coefficient, dB	-	130
Average sensitivity, mV/Pa	-	200
Noise level as acoustic pressure equivalent, dB	-	< 60
Power	-	two accumulators 6V, 0.7 Аh
Time of continuous work, hours	-	70

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UV measurements

5-elements photons meter

Parameters

Spectral sensitivity, nm	-	205 ÷ 265
Maximal reaction frequency, Hz	-	25
Linear mode of flux intensity measuring is provided at frequency, Hz	-	15
Sunlight sensitivity 50000 Lx, pulse/sec	-	3
Lightbulbs sensitivity 10000 Lx, pulse/sec	-	3
Output level	-	TTL
Power	-	220V, 50Hz

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