Rebroadcast station (AR20)

The AR20 automatic rebroadcast station is a device allowing automatic rebroadcasting in fixed frequency operation modes of transceivers complying with the requirements of the STANAG 4204 standard and of transceivers communicating in frequency hopping modes using HW20 modulation, i.e. RF23, RF20, RF2050.

PN (RN): 2315.100.02

• Automatic rebroadcasting of services in simplex or semi-duplex frequency hopping channel, such as transmission of short text messages, ALERT, authentication, and notification of interruption BREAK IN.
• Automatic rebroadcasting of P2P data communication or according to MIL-STD-188-220 (NET) in simplex or semi-duplex frequency hopping channel.
• Automatic synchronization of all terminal transceivers from the AR20.
• Automatic rebroadcasting of voice communication in simplex or semi-duplex fixed frequency channel or frequency hopping channel.
• Automatic rebroadcasting of data communication in simplex or semi-duplex fixed frequency channel according to MIL-STD-188-220 (NET).
• Automatic rebroadcasting of voice communication in simplex or semi-duplex fixed frequency channel with encryption unit enabled.
• Automatic rebroadcasting of short encrypted FLASH messages in simplex or semi-duplex fixed frequency channel.
• Rapid transition to radio communication between AR20 and terminal transceivers without rebroadcasting to another network.
• Connection to a third radio station, which is a terminal transceiver of another rebroadcast station, while ensuring compatibility of all types of communication in fixed frequency or frequency hopping channels.

Frequency range(25–108) MHz
(140.025–145.9875) MHz
Frequency range in frequency hopping modes(30–87.975) MHz
Input and output impedance50 Ω
Receiver sensitivity0.7 μV in (30–90) MHz band
0.6 μV in (25–30) MHz band
0.5 μV in (90–108) MHz band
(140.025-145.9875) MHz band
Transmitter power
– nominal50 W –1/+2 dB at 24 V
50 W –3/+2 dB at 12 V
– reduced5 W –1/+2 dB
ModulationFM
Frequency deviation6.5 kHz or 3.3 kHz
Channel spacing
(30–108) MHz band25 kHz, 12.5 kHz and 6.25 kHz
(25–29.975) MHz band25 kHz
(140.025–145.9875) MHz band25 kHz, 12.5 kHz
Channel spacing in frequency hopping modes25 kHz
Compatibility of operation (1.5 m antennas)(30–90) MHz
Compatibility of operation (30 m antennas)(25–30) MHz, (90-108) MHz
(140.025–145.9875) MHz
Minimum separation between receiving and transmitting frequency10 %, for 6 dB receiver sensitivity drop
Current consumption during communication, one transceiver transmitting25 A at 12 V
12 A at 24 V
Current consumption without communication, receiving transceiver2.8 A at 12 V
1.4 A at 24 V
Power requirementsMIL-STD-1275B
Operating temperature range-40 °C to +70 °C
Dimensions (without attached cables and cooling unit)W 430 mm x H 285 x D 225 mm
Weightmax. 30 kg
Climatic resistanceMIL-STD-810E
RF2050 operating instructions2310.010.12
RF2050 short operating instructions2310.011.12
AR20 operating instructions2315.010.02
Tactical communication, Military, Defence, Naval, Air Force
AR20 - Automatic rebroadcast station set
PN (RN): 2315.000.02

Set consists of RF2050 EPM transceivers, RU20 rebroadcast unit and accessories.

The AR20 automatic rebroadcast station is a device allowing…