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4200 series radio equipment of VHF range

4200 series radio equipment of VHF range

 4200 series radio equipment of VHF range
Полное описание

Radio equipment of the 4200 series is implemented on the principles of "digital programmable radio" (SDR). All 4200 radios are multi-channel, but can be programmed into single-channel mode to increase reliability.

Radio equipment of the 4200 series is designed for receiving and transmitting voice messages with amplitude modulation, for operation in the mode of data transmission ACARS and VDL2 in the frequency range from 118 to 137 MHz.

The radio equipment of the 4200 series includes the following VHF radio transmitters: XU4200 transceiver, SU4200 radio transmitter, EU4200C radio receiver.

The radio equipment of the 4200 series has a number of functionalities both for the installation of individual facilities at facilities with a high level of equipping with radio electronic equipment, and for the creation of automated, unattended, high-level transceiver radio centers:

  • separate and independent modules of the receiver and transmitter;
  • advanced control module for future signals;
  • software update via USB port;
  • two criteria of threshold noise cancellation are realized in receivers;
  • support for VoIP technology;
  • a deep level of radio facility self-diagnostics;
  • simple remote monitoring and remote control via IP connection;
  • reliable protection against operator errors;
  • sending warning messages in case of unauthorized access.

Specifications

Specification

Value

1. Main Features

Frequency range, MHz

from 118 to 136.975 MHz

Frequency grid, kHz

25; 8,33

Accuracy of frequency setting, Hz

± 1.0 x10-6 (at a temperature of -20 to + 55 ° C)

Modes of modulation:

АМ (А3Е), АМ-MSK(A2D), D8PSK (G1D)

Remote control interface

Ethernet

VoIP Support

EUROCAE ED137B part1

2. Transmitter specifications

Output RF power, W

50 ± 1, adjustable from 5 to 50 in steps of 1 W

Operation in transmission mode with an output power of 50 W

24 hours, at a temperature of +40 ° C

Harmonic distortions of amplitude modulation,%, not more than

5

The level of noise emissions in the 1 Hz band when tuning is ± 1% of the carrier frequency, dB is not more than:

-155

The level of spurious emissions (harmonic) in the 1 Hz band, dB, not more than

-93

The level of intermodulation radiation of the third order, dB, no more than

-40 (with interference mistuning at ± 175 kHz from the carrier)

Power level at the frequency of the adjacent channel, dB, not more than:

at a frequency range of 25 kHz

-70

at a frequency range of 8.33 kHz

-60

Input resistance of the low-frequency tract, Ohm

600±15%

3. Receiver Specifications

Sensitivity, (at S / N = 10 dB, Fmod = 1 kHz, m = 30%) μV, not worse

1,0

Permissible input signal level, V, not more than

7,5

Attenuation of spurious emissions, dB, not less than

80

Attenuation of cross modulation frequencies, dB, not less than

90

Attenuation of radiation at mirror frequency, dB, not less than

100

Attenuation of emissions at intermediate frequency, dB, not less than

90

Selectivity for the adjacent channel, dB, not less: with a 25 kHz frequency grid

75

with a 8.33 kHz frequency grid

65

Intermodulation distortions of the 3rd order at detuning ≥ 100/200 Hz, dB, not less than

80

Output impedance of the low-frequency tract, Ohm

600±15%

Nonlinear distortions of the output LF signal of l%, not more than

2

Output AGC:

Analog, from 0 to + 5V

from -120 dBm to + 10 dBm, linear dependence

Digital (LAN interface)

from -120 dBm to + 10 dBm, with 1 dB steps