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Radius PDR 300
Technical Data

Transparent Protocol Routing

The PDR 121 application software is so named because it is backwards-comptible with Radius PDR 121 radios. It can route messages in almost any protocol based on the embedded addresses. It supports many of the standard communication protocols. However, since there are so many protocols available, it also offers you the option to use other open or proprietary protocols.

Extra-Wide Communication Range

The PDR 121 software has a unique repeating technology that allows up to 7 hops, i.e. 8 radios in any 1 chain. This gives really wide-area coverage and can overcome problems posed by difficult terrain.

The feasible distance between any two radios depends on the data rate, the frequency used, the type of antennas and the reliability required. There already are, however, working PDR systems in the VHF spectrum communicating over distances of up to 50 km and in the UHF spectrum reaching up to 30 km.

Thanks to the outstanding receiver sensitivity of the PDR 300 hardware and the multi-hop repeating technology of the PDR 121 software, the radio can communicate over distances not achievable by other wire­less devices.

Security & Reliability

The PDR 300 has optional over-the-air 128-bit encryption. In addition, all PDR radios carry unique radio IDs, which means that the wireless data radio system cannot be listened to, be interfered with or disturb other systems. The PDR 300 also features forward error correction with bit interleaving to bolster its immunity to interference. This enables it to recover data packets with up to 30% corruption.

Transceiver Flexibility

The radio has a tuning range of up to 70 MHz. This gives users some leeway in the choice of the exact frequency to be employed and allows a very wide separation of duplex (separate Tx and Rx) frequencies. The power output can be set anywhere between one milliwatt and 5 W. The signal strength can also be adjusted to suit noisy environments and the bandwidth can be configured to either 12.5 or 25 kHz.

Data Rates & Collision Avoidance

The PDR 300 has an over-the-air uncompressed data rate of up to 19.2 kbps. With compression, the effective data rate can be much higher. Con­figurable collision avoidance optimises channel usage and minimises data turnaround times.

Versatile Data Interfaces

The PDR 300 has dual RS-232 ports and Ethernet ports. This gives flexibility in the connections to central systems and to slave devices.

Flexible Setup

Configuration of the radio is either via standard terminal software on a serial connection or through SSH over Ethernet. The configuration interface has clear built-in menus.

The radios are all identical: there is no need to buy separate base stations, outstations and repeaters. Each PDR 300 can be configured to fit any application. This also reduces the need to store service spares.

Remote Diagnostics, Central Supervision & Over the Air Configuration

The PDR 300 has a comprehensive menu system that enables the user to easily perform measurements on their wireless network. This includes:

  • the signal strength
  • the power output of each radio
  • the bit error rate between any two radios.

The PDR 300 / PDR 121 network can be centrally managed through the RND 100 software. This monitors the network performance and uses a graphical web interface to give the user real-time information about the radio network, along with the display of alarms and historical data.

Furthermore, the remote devices can be configured over the air from the master.

Compliant with European Radio Equipment Directive (RED)

The PDR 300 has been certified according to the new European Union Radio Equipment Directive (2014/53/EU).