Sigma engineers and manufactures RF and sub-surface communication systems for defence, aviation and mining — including Leaky Feeder technology built for continuous coverage underground.
In-house design, testing and manufacture — no outsourced link in the chain between engineering and deployment.
Radio-frequency design and consulting spanning national defence systems, mining, tunnels and environmental monitoring.
View details → SVC-02World leaders in Leaky Feeder technology, engineered and manufactured for reliable radio coverage deep underground.
View details → SVC-03In-house Surface Mount Technology assembly plant for prototyping and full production runs.
View details →We've worked with regional specialists in South Africa and Europe for over 25 years, extending Sigma-engineered systems into new markets worldwide.
Our leaky feeder systems now support continuous underground communication at operations across several Southern African mining regions, reinforcing our position as a leader in the technology.
Working alongside our partners in Poland, we are extending the reach of Sigma-engineered communication systems into new international markets.
