• Compliance with EN 300 220-3 and EN 301 489-3 standards ensures adherence to European regulations.
• High-performance double superhet. PLL synthesizer with TCXO for stable frequency control.
• SAW front-end filter and user interface speed of 9600bps for efficient data processing.
• Usable range over 1km, fully screened, low profile, and re-programmable via RS232 interface for versatile applications.
• Low power requirements make it suitable for battery-operated devices.

• Ideal for wireless handheld terminals, EPOS equipment, and barcode scanners.
• Suitable for data loggers, industrial telemetry, and telecommand.
• Applicable in in-building environmental monitoring and control.
• Useful for high-end security and fire alarms, DGPS systems.
• Facilitates vehicle data up/download and heavy vehicle/machinery controls.

• Operating frequency ranges for UK, Australian, and EU bands with 32 channels and 25kHz spacing.
• Transmit power options of +10dBm (10mW) and +20dBm (100mW).
• Supply range: 3.1 – 15V for TX @ 10mW and RX, 4.1 – 15V for TX @ 100mW.
• Data bit rate up to 5kbps, receiver sensitivity of -118dBm.
• Serial configuration via inverted RS232 at 3V CMOS level.

These radios provide a transparent interface with control over the datastream, using existing hardware with new firmware for a simple data link.

• PLT and PLR modules have similar pinouts with specific functions for each pin, including power supply, ground, transmit/receive enable, and data input/output.
• Important notes on pin usage and voltage levels are provided.

Commands configure the module via a 9600 baud CMOS level inverted RS232 format, allowing channel selection, buffer size setting, and mode configuration.

Details on the FLOW output behavior during receive and transmit operations, including timing and data burst handling.

• Frequency bands for EU, UK, and Australian versions.
• Frequency stability, channel spacing, and number of channels.
• Operating temperature range and spurious radiation compliance.
• Transmitter and receiver specifications including output power, modulation type, and sensitivity.

The PLR receiver includes an RSSI for assessing link quality, with output characteristics and typical RSSI levels provided.

Recommendations for integral antennas, including whip and helical types, with considerations for optimal performance.

• Whip Antenna: Offers ultimate performance and ease of design setup but is larger in size and has low immunity to proximity effects. It provides a range of 500m in open ground.
• Helical Antenna: Moderate performance and design setup ease, with high proximity effect immunity. It offers a 200m range.
• Loop Antenna: Least performance and design setup ease but is compact and highly immune to proximity effects, with a 100m range.

The document provides specifications for various transmitter and receiver models across VHF and UHF frequency bands. Key parameters include frequency band, supply voltage, RF power, and data rate. Standard products use a 9600 baud interface speed, with slower versions available.

Details are provided for ordering different models, including part numbers and frequency bands. The document notes the availability of products on various VHF and UHF frequencies, subject to SAW filter availability.

The document includes a copyright notice and a limitation of liability statement. It mentions compliance with the R&TTE Directive for placing products on the market and provides contact information for Ofcom and the European Radiocommunications Office for further details.