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 impedance | 50 Ω |
| Receiver sensitivity | 0.7 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 | |
| – nominal | 50 W –1/+2 dB at 24 V |
| 50 W –3/+2 dB at 12 V | |
| – reduced | 5 W –1/+2 dB |
| Modulation | FM |
| Frequency deviation | 6.5 kHz or 3.3 kHz |
| Channel spacing | |
| (30–108) MHz band | 25 kHz, 12.5 kHz and 6.25 kHz |
| (25–29.975) MHz band | 25 kHz |
| (140.025–145.9875) MHz band | 25 kHz, 12.5 kHz |
| Channel spacing in frequency hopping modes | 25 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 frequency | 10 %, for 6 dB receiver sensitivity drop |
| Current consumption during communication, one transceiver transmitting | 25 A at 12 V |
| 12 A at 24 V | |
| Current consumption without communication, receiving transceiver | 2.8 A at 12 V |
| 1.4 A at 24 V | |
| Power requirements | MIL-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 |
| Weight | max. 30 kg |
| Climatic resistance | MIL-STD-810E |
| RF2050 operating instructions | 2310.010.12 |
|---|---|
| RF2050 short operating instructions | 2310.011.12 |
| AR20 operating instructions | 2315.010.02 |
AR20 - Automatic rebroadcast station set
Set consists of RF2050 EPM transceivers, RU20 rebroadcast unit and accessories.
The AR20 automatic rebroadcast station is a device allowing…