Critical communications

High reliability 700MHz, 800MHz & 900MHz components and sub-systems for P25 networks

Critical communications

High-performance and high-reliability RF for LMR, LTE and Converged Networks

Filtronic’s products are part of advanced radio networks, enabling dispatchers to instantly communicate critical information to first responders in the field. When they need critical communications, they can rely on the infrastructure to deliver communications the first time, all the time. Filtronic designs and manufactures purpose-built solutions for first responders. High-performance communications when seconds count.

Our precision products for critical communication applications include tower top amplifiers, filters, crossband/in-band combiners, power amplifiers and multiplexers. We collaborate with the leading critical communication OEM’s, acting as their RF partners. Our innovations and technical skill have improved miniaturisation, reducing the footprint and weight of our components, while increasing power and amplification to improve connectivity

Filtronic is a thought leader, innovator and problem solver in the mission-critical communications sector, helping to overcome complex RF challenges such as combining, filtering, and mitigating dynamic interference. We have established an enviable reputation in critical communications, most notably serving the US Project 25 (P25) public safety market with high-performance ceramic filter/combiners and RF conditioning products.

We provide full US-based assembly, and have been instrumental in reshoring some products and process for our customers. We can offer a range of tailored solutions from our modern manufacturing plant in Salisbury, Maryland, providing our customers a world class service that adds value to their supply chain. By helping our clients to remove cost from their operations, reducing their labour costs, improving their processes by removing waste. We also reduce time to market, giving our clients the flexibility to ramp up and down rapidly, improving quality all with no additional overheads or purchasing capital equipment.

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Walter Magiera
Walter Magiera

Walter Magiera

Critical Communications Lead

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High reliability microwave sub-systems for emergency first response networks

Filtronic designs, manufactures and tests products for a range of advanced critical communications sub-systems, including:

P25 networks

Envious track record
serving the US P25 market

Land mobile radio

LMR track record with innovations
across the RF spectrum

5G & LTE

Experts in backhaul for
commercial-grade LTE networks

Converged networks

Hybrid solutions, blending
LMR with 5G networks.

Critical communications RF filters

RF filters play a crucial role in emergency first response networks, ensuring reliable communication during critical situations. Filtronics capabilities in filters include metal cavity filters, ceramic, combline, interdigital, lumped element, suspended substrate, waveguide and thin-film filters.

We are experts in filter topology, offering rapid prototyping and reduced development cycles. Our team of highly experienced engineers work with customers to ascertain optimum technologies dependent upon specific filter requirements, e.g. size, response, power handling, insertion loss and rejection.

critical communications

Critical communications RF products

Tower top amplifiers

Filtronic’s Tower Top Amplifiers (TTAs) feature smart redundancy, which continuously monitors the health of the balanced quadrature-coupled amplifiers. In the case of a failure in one of the amplifiers, the system can continue to operate using the redundant amplifier. If both amplifiers are lost the system will function in...

Cross band combiners

Cross-band combiners enable signals from multiple base stations of different bands to be combined onto a single pair of feeders which speeds up deployment, saves the cost of additional feeders and when used with ultrawideband antennas and multi-band TMAs, reduced site clutter. Cross-band combiners are used to combine multiple...

In band combiners

Due to the increasing restriction on tower infrastructure deployments by local municipal policies and the physical limitations of towers, operators are facing difficulties in adding new antenna systems to their existing sites. Network equipment sharing between multiple operators or multiple technologies are a cost-effective solution to the deployment of...

Custom filters

Filtronic has extensive knowledge and expertise in the design, development and production of custom filters that dates back to 1977. Our custom filters products include metal cavity filters, ceramic, combline, interdigital, lumped element, suspended substrate, waveguide and thin-film filters. We are experts in filter topology, offering rapid prototyping and...

Success stories

Tower Top Amplifiers Improved specifications

Hi-Power Combiner with Passive Temp Compensation

Reshoring to meet our client’s country of origin targets

Critical communications news

News 05.10.2023

48 port tower top amplifier expands “best in class” critical communications solution.

Whitepaper 21.01.2022

How upgrading tower top amplifier specification has improved first responder radio communications

News 23.06.2021

Filtronic re-shores manufacturing of critical communications product from China to USA