VLF radio transmitter "Pyatidesyatnik-E"

Cabin based Tx VLF system "Pyatidesyatnik-E" is designed for communication in telegraphy modes.

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· Installation is simple and prompt

· May be placed on various floating structures

· Might work with both stationary antennas and NFPs (for example, with an unmanned aerial vehicle)

Main technical characteristics:

Output power	100 kW
Operating frequency range	15–30 kHz
Modes: -telegraphy operation in AM mode -telegraphy operation in FM mode -telegraphy operation in relative phase-shift keying mode with phase shift from 0° to 180°	data rate up to 100 bauds data rate from 4 to 100 bauds with frequency shift 6,75,100 and 125Hz respectively data rate 50 bauds and 100 bauds
Efficiency	More than 70%
Programmed channel hopping time	Less than 30 s
Telegraphy distortion at power amplifier output	Less than 10%
Phase transition time (G1 mode)	2,5 ms at most
Radio station equipment is designed for operating in the following environmental conditions: - operating temperature range - relative humidity (+30°С ±2°С)	from +10° С to +35° С 70%
Critical temperature: - Max. - Min.	+ 40°С - 40°С
Power supply	3 phase, 10 kV ±10%, 50 Hz ±4%; 3 phase, 380 V±10%, 50 Hz ±4%.
Rearrangement of power amplifier and functional blocks within entire operating range during frequency change	automatic
Ability to work on any of the antennas with input impedance parameters - Q - Ха - Ra	up to 200 from -220 up to +3 Ω from 3 up to 10 Ω
Operating time	round-the-clock