Company Overview
Etherstack is a global leader in essential push-to-talk communications.
Etherstack licenses wireless communication technology, enabling push-to-talk (PTT) communications for customers in the public safety, defence, utilities and resources industries.
Etherstack technologies are licensed by the leading names in wireless communications globally, whether on land, sea, air or space. The company also manufacturers complete digital radio networks and tactical communications products using Etherstack core technologies.
Customer and Target Markets
Etherstack licenses its innovative wireless communications technology across three key technology platforms:

The company estimates the total addressable markets for its three key technology platforms to be:
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Cellular Networks (MCPTX): US $250 to $750 million
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Land Mobile Radio (LMR) networks: US $3 billion
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Satellite Push to Talk (PTT): $56 billion
Key attributes
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Core network products are high margin. These software solutions typically include long term support contracts.
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Growing recurring revenue base – CAGR of 31.2%.
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Etherstack’s software is underpinned by complex intellectual property developed over the course of 20+ years.
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Well positioned for government infrastructure and stimulus spending.
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Etherstack has an established a globally diverse customer base including:
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AT&T
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Samsung Electronics
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Royal Canadian Mounted Police
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West Australian Resources (Pilbara Iron Ore) company
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Energy Queensland
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First Energy Electric utilities in North America
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ATCO Electric in Alberta Canada
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Australian Department of Defence
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Headquartered in Sydney, Etherstack also maintains R&D and support offices in the UK, US and Japan.
Latest Media Releases
Latest News
Interviews /
by Tim McGowen -
2 years ago
20 Feb 2023 - Etherstack Limited (ASX:ESK) CEO and Executive Director David Deacon discusses the company's 2022 financial highlights and outlook for 2023.
Market Reports /
by Peter Milios -
2 years ago
17 Feb 2023 - The ASX suffered more losses following on from lunchtime, closing 0.86 per cent lower at 7,346.80.
Market Reports /
by Peter Milios -
2 years ago
17 Feb 2023 - Only Consumer Staples and Utilities are trading positive at noon, as the S&P/ASX 200 is 0.58 per cent lower at 7,367.60 at noon. In addition, The Producer Price Index…
Interviews /
by Lauren Hayes -
2 years ago
05 Oct 2022 - Etherstack Limited (ASX:ESK) CEO and Executive Director David Deacon discusses recent agreements with Samsung and Nokia and the outlook for the months ahead.
Interviews /
by Lauren Evans -
3 years ago
18 Nov 2021 - Etherstack Limited (ASX:ESK) CEO and Executive Director David Deacon introduces the company's push-to-talk communications technology for essential services.
Company Presentations /
by -
3 years ago
17 Nov 2021 - Etherstack Limited (ASX:ESK) CEO and Executive Director David Deacon presents on the market opportunity for Etherstack's push to talk and land mobile radio solutions,…
Company News /
by Melissa Darmawan -
3 years ago
22 Jul 2021 - Wireless technology company Etherstack (ASX:ESK) have inked a $11.6 million deal with Samsung for 5-years. Etherstack Wireless, their subsidiary is set to supply one …
Company News /
by Katrina Bullock -
4 years ago
12 Feb 2021 - A subsidiary of radio tech company, Etherstack (ASX:ESK) has entered into an agreement with EOS Defence Systems to supply services to the Australian Department of Def…