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We are focused on moving the company forward into new areas and pushing boundaries in every aspect of our business, whilst maintaining our core values such as engineering excellence, building products that truly perform and strong relationships.

If you’d like to join our team, please get in touch.

Current Jobs

Senior RF Design Engineer / Wireless Embedded Systems Engineer

Radiometrix is recognised as the leading global developer of ISM/SRD/MURS band radio modules. We manufacture and design high-quality and cost-effective VHF and UHF radio modules, radio modems and remote control products that cater for the wireless needs of OEMs worldwide. Available on all major frequencies (27, 40, 144, 151, 169, 173, 433, 458, 869 & 915 MHz), we offer a wide variety of radio modules to suit a diverse range of licence-exempt and licencedapplications. The off-the-shelf modules can be customised to meet specific requirements of medical, security, defence, public sector and industrial customers worldwide.

Key Responsibilities:

Responsible for the design, development and support our RF products.
Will be involved in more than one project at any one time
Multi-tasks appropriately to serve needs of all projects including support for Production.
Travelling abroad to visit suppliers, customers and Exhibitions

Knowledge, Skills and Experience:

Is proficient in full life cycle of RF development and production hand-over
Ability to upgrade/redesign existing products if component obsolescence occurred
Proficient in discrete component-level to TI, Silicon Labs, Semtech RFIC based designs.
Experience in programming Microchip PIC, TI MSP430, ARM Cortex-M families.
Advanced knowledge in programming in Assembly, C/C++ language.
Ability to design 10/12.5/25kHz Narrowband radio modems with 5W or higher transmit power
Experience in designing RF circuits from 27MHz to 2.4GHz
Experience in designing for ETSI EN 300 220, EN 300 113, EN 300 086 and FCC Part 90, 95 certification.
Experience in SCADA, MODBUS and other industrial communication protocols
Ability to design wireless Analogue I/O controllers (0… 20 mA / 4 … 20 mA, 0 … 10VDC)
Experience with hardware interfaces such as RS232, RS485, UART, SPI, I2C, ADC, DAC.
Experience with FHSS, Mesh networking, IEEE 802.15.4, LoRAWAN, Wireless M-Bus, KNX Electronic design, Schematic capture, PCB layout using Eagle/Easy-PC, etc.
Ability to work independently.

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LEGACY PRODUCTS

Radiometrix has been manufacturing radio modules for almost 40 years. In that time new designs have improved older ones, and technologies have changed. Some critical parts have even become obsolete. This has produced a family of legacy designs but Radiometrix does not just discontinue products and does not leave users options. Legacy modules can either still be manufactured (with some limitations and caveats) or technical support assistance can be provided to guide users towards more up to date (and often better, and cheaper) equivalents.
Our legacy product range includes the:
TX1, RX1, NRX1, NTX2, NRX2, BiM1 single channel crystal controlled narrowband modules
TX2, RX2, & BiM2 SAW based 433MHz radios. (Both supplanted by modern PLL based designs)
TX2A, RX2A, TX3A, RX3A, BiM2A, BiM3A, BiM2B, HVR2 (all with obsolescent part issues)
BHX2 (458MHz high power, transceiver superseded by SFX2).

LoRa LONG RANGE REMOTE CONTROL/MODEM

Many Radiometrix modules are conventional single frequency radios, transmitting their RF energy in one distinct channel (even multichannel units only use one channel at a time).
The LRM3 is different. It is a transceiver built around the highly innovative Semtech “LoRa” chip-set, which uses a spread-spectrum technique to distribute it's transmitted power over a much wider spectrum. Up to a MHz or more.
This method (in the past limited to high security military radios) gives a LoRa radio exceptional resistance to jamming and interception, and allows it to advantageously use very low data rates to get much longer range (for given transmit power). As an example, 10mW 869MHz LoRa radios can reach out 10km or more.
The LRM3 is an innovative solution for very long range control and low speed data transmission.

HF RANGE

The most well known low power wireless bands are in the VHF and UHF (400 and 870MHz) regions, but there is an often overlooked world wide allocation at 27MHz.

Radiometrix manufactures 27MHz versions of some of it's better known types of modules. These include the SIL footprint single channel NRX0 receiver and NTX0 transmitter, and the multichannel LMT0 transmitter and LMR0 receiver. With a suitable antenna, these HF units can easily rival the performance of the higher frequency modules.

COMPACT MODULES

The established ranges of Radiometrix products already put a lot of functionality into very small packages, but advances in RF devices in recent years has noticeably raised the game. Using state of the art RF silicon devices, the MTX2 (400MHz band) and MTX3 (869MHz) transmitters take the high performance narrowband multichannel performance of the LMT series and condense it into an uniquely compact 23 x 12.5mm footprint, with no performance trade-offs at all. These modules are ideally suited to integration into hand held “fob” sized products.

458MHz INDUSTRIAL HIGH POWER

In the UK, there is a specific allocation on 458MHz for long range, high reliability wireless links (targeting industrial telemetry, telecommand and machine control tasks). These links are narrowband (only) and are allowed to use up to 500mW TX power (for a practical range of well over 1km)

Radiometrix provides a wide range of 458MHz band capable products, but uniquely matched to this band are the SFX2-458 high power fast switching transmitter and the HMT2-458 500mW transmitter.