Relcotek
Electronics design & development

Hardware and firmware, from first schematic to working board.

From power electronics and SDR receivers to FPGA systems and custom PCBs, Relcotek delivers dependable hardware and the firmware that runs it, fully documented and ready to build.

Discuss your project See what we've built
Close-up of a dense multilayer PCB layout with an FPGA fan-out, power planes and RF routing
01 — Capabilities

What we design

Four disciplines covering the full signal and power path, so a single team can take your product from requirements to a tested prototype.

Power electronics

RF power amplifiers, battery management and protected power switching, from milliwatts to kilowatts.

LDMOS amplifiers · combiners
BMS · solid-state switching

SDR receivers

Receiver front ends with wide dynamic range, ADC chains and low-noise clocking, built for crowded spectrum.

HF · VHF front ends
Direct sampling & DDC
Clocking & phase noise

FPGA development

FPGA logic and embedded Linux on Xilinx / AMD devices, from DSP pipelines to board bring-up.

Zynq-7000 · Kintex-7 · UltraScale
DSP & channelizers
PetaLinux · high-speed links

Custom PCB design

Mixed-signal and RF boards, from schematic to fabrication-ready files, with simulation and early compliance checks built into the process.

Schematic & layout in KiCad and OrCAD
Circuit simulation
EMC pre-compliance
02 — Selected devices

Hardware we've built

A selection of recent designs, from a real-time audio processor to a multi-slice HF receiver.

Spartan-6 real-time audio processor board with five audio jacks, a Spartan-6 FPGA and USB connectors
FPGA · Audio DSP

Spartan-6 real-time audio processor

A real-time audio filtering board that hunts down and extracts faint frequency patterns buried in noise.

  • Spartan-6 FPGA
  • Real-time filtering
  • Weak signals in noise
Multi-bay battery management board under test, with probes attached and lab equipment softly blurred behind
Power electronics · Embedded

Multi-bay battery management system

A dual-bay lithium battery manager for 12–36 V.

  • 12–36 V
  • STM32F427 · Zephyr
  • BQ25756E charger
HF receiver add-on board with relays, SMA connectors and status LEDs, mounted on its carrier board
SDR receiver · FPGA

HF receiver

A software-defined HF receiver on a Zynq-7000 platform, with several DDC slices and a Gigabit Ethernet interface. A switched preselector and a wide-dynamic-range analog front end cover 450 kHz–30 MHz.

  • XC7Z030 · PetaLinux
  • Multiple DDC slices
  • Gigabit Ethernet
  • 450 kHz–30 MHz
Exploded CAD view of the embedded audio modem front-panel assembly, showing the circuit board mating with the connector panel
FPGA · Embedded audio

Zynq-7000 embedded audio modem

An embedded multi-channel audio modem with an Ethernet interface.

  • Zynq-7000
  • Multi-channel audio
  • Ethernet
03 — Open source

Designs shared in the open

Board designs, firmware and engineering write-ups are published openly at electrodyssey.net, so you can see how we work before we work together.

  • /01 NASR-M SYZYGY carrierOpen hardware carrier board for the Zynq-7000 (XC7Z030).
  • /02 Technical blogDesign notes on RF, receivers, clocking and FPGA work.
  • /03 Linux audio utilitiesSmall tools released alongside the hardware projects.
04 — Contact

Tell us what you need to build.

Send a short description of your project, including requirements, timeline and constraints, and we will reply with questions or a proposed approach.

info at relcotek dot com LinkedIn Central European Time (CET / CEST)
Registered in the Czech trade registry
IČO 09842691