G6 GLOBAL LIMITED

What G6 GLOBAL LIMITED does

G6 Global, trading name of Calcom Holdings Ltd (UK private limited company, registered number 3740662), is a mission-critical two-way radio communications integrator founded in 1999 and headquartered in Almondsbury, UK. The company designs, supplies, installs, and maintains tailored communication systems spanning Broadband Push-to-Talk over Cellular (LYNX-PTT), DMR/dPMR digital radio, satellite communications via Iridium/Thuraya/Inmarsat, Marine VHF, Airband VHF, VoIP, and commercial drone systems. Its proprietary assets include the LYNX-PTT platform with X.CONTROL C3 software and X.CONNECT mobile app, and The GRID, an exclusive encrypted London coverage network on Ofcom-licensed frequencies.

G6 serves enterprise, government, and military clients across 13+ countries, with named engagements including Chelsea Football Club, the UK Driver and Vehicle Standards Agency (DVSA), the National Trust, Crane Currency, HMGCC, and the UK, US, and Netherlands Special Forces. It holds ISO 9001 accreditation and FITAS/FC1362:2010 mobile installation compliance, and its engineering team includes SC-cleared former Special Forces personnel, a credentialing prerequisite for classified work. The company is the only UK firm offering fully covert radio hire (SPYDER and FOXTROT systems).

The business operates a sales-led enterprise field-sales model with direct bespoke engagements and a recurring-revenue Radio as a Service (RaaS) subscription from £23/radio/month that bundles hardware, Ofcom licensing, support, and 4-year replacement. Additional revenue streams include hardware sales, system design and planning, installation and maintenance, customer training, covert radio hire, and drone and pilot hire via the g6-global.co.uk web shop. Core partnerships include Caltta (manufacturing), JustCom Distribution (UK/Ireland distribution), Grandstream (VoIP integration), Bittium (secure smartphones), and Telo Systems (DMR/POC hybrid devices).

Name

G6 GLOBAL LIMITED

Legal name

Calcom Holdings Ltd

Website

https://g6-global.com

Company type

Private

Founded year

1999

Operating status

Operating

Headcount range

1–10 employees

Short description

G6 Global is a UK mission-critical two-way radio communications integrator offering LYNX-PTT, DMR, satellite, and drone solutions to military, government, enterprise, and security clients across 13+ countries.

Ownership category

akta.pro rank

Product category

Mission-Critical Communications Services

NAICS

Satellite Telecommunications (517410)

SIC

Radiotelephone Communications (4812)

akta.pro primary industry

Enterprise Satellite Connectivity & Managed Services (VSAT, SD-WAN over Satcom) (HDAIAJAB)

akta.pro secondary industries

Satellite Network Operations & Capacity Services (NOC, Capacity Leasing, Managed Payload Services) (HDAIAJAI), Satellite Broadband Terminals & Gateways (VSAT/LEO CPE) (HDAFAIAM)

Keywords

• Two-way radio communications
• Push-to-talk solutions
• Satellite communications
• Mission-critical communications
• Radio as a service

Headquarters

HQ city

Almondsbury

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Supply Chain, Technology or R&D, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Radio as a Service (RaaS): Monthly subscription model charging a fixed cost per radio per month. Includes hardware (handset, battery, antenna, charger, repeaters if required), Ofcom radio frequency licence, replacements and repairs, technical support, and replacement of all radios every 4 years. Billed monthly, quarterly, or annually. This is the company's flagship recurring revenue product.
2. Equipment and Hardware Sales: Sale of two-way radios, satellite communication devices, broadband PTT hardware, marine VHF radios, airband radios, VoIP equipment, drones, and associated accessories. One-time hardware purchase alongside RaaS or as standalone.
3. System Design and Planning: Consultancy and engineering services for designing tailored communication systems including coverage analysis, frequency consultation, licence applications, groundworks planning, and project management.
4. Installations and Maintenance: Professional installation of fixed infrastructure, vehicle and mobile installations, and ongoing maintenance services. Includes remote networking, OTAP, and preventive/corrective maintenance. Mobile installations comply with FITAS/FCS1362:2010 standard.
5. Customer Training: Training programmes covering system use and operation, first line care of radio devices, radio SOP writing, voice procedure, radio etiquette, and communications log-keeping. Delivered on-site, hands-on, online, or in condensed short courses.
6. Drone and Pilot Hire: Hiring of certified drone pilots and drone equipment for security, inspection, and surveillance operations. Adheres to strict drone flying regulations.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels6 records

Core offering

G6 Global Limited delivers tailored mission-critical two-way radio communication solutions, integrating Broadband Push-to-Talk (LYNX-PTT), DMR/dPMR digital radio, satellite communications (Iridium, Thuraya, Inmarsat), Marine VHF, Airband VHF, and VoIP for enterprise, government, military, and security clients. The company's flagship offering, Radio as a Service (RaaS), bundles hardware, Ofcom licensing, maintenance, support, and four-year equipment replacement into a fixed monthly subscription.

Product overview

G6 Global provides a comprehensive portfolio of mission-critical communication solutions centered around their LYNX-PTT Push-to-Talk platform, which delivers voice communications over 4G, 5G, and WiFi networks. The offering includes Radio as a Service (RaaS), a subscription model covering hardware, licensing, and maintenance with 4-year equipment replacement. Their proprietary GRID network provides encrypted radio coverage across London. Complementary products span Digital Two-Way Radio (DMR/dPMR), Satellite Communications (via Iridium, Thuraya, Inmarsat), Marine VHF, Airband VHF, VoIP integration with Grandstream, and Drone Technology (sale and hire). The company also offers professional services including System Design and Planning, Installations and Maintenance, and Customer Training. G6 serves diverse sectors including Security, Military, Healthcare, Manufacturing, Utilities, Oil & Gas, Transport & Logistics, Humanitarian/NGO, Arenas & Events, and Estates & Campus.

Differentiator

Problem solved

Functional benefit

Brands

• LYNX-PTT: Network radio offering using 4G and 5G networks with WiFi for national and global digital radio network coverage.
• X.CONTROL
• X.CONNECT
• The GRID
• Radio as a Service (RaaS)

Products and services

• LYNX-PTT (Broadband Push-to-Talk)

Quantifiable outcome

• Coverage area up to 30% wider with dPMR technology compared to 12.5kHz analog, extending range by up to 15%
• +2 more outcomes

Named customers15 records

Segments10 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature10 records

Partnerships

Seven partnerships are on record, tiered core and minor.

• Calcom Holdings LtdcoreOthersG6 Global is owned and operated by Calcom Holdings Ltd, a limited liability company registered in the United Kingdom (registered number 3740662). Calcom Holdings Ltd is the parent entity under which the G6 brand operates.
• CalttacoreTechnology or IntegrationCaltta is G6 Global's preferred manufacturing partner for Radio as a Service. Caltta is a global leader in communication technology providing robust two-way radio systems. G6 selected Caltta for the high quality of radios and infrastructure products and the unparalleled levels of support offered.
• JustCom DistributioncoreChannel Partner/ Reseller/ DistributorJustCom Distribution is the exclusive distributor for Caltta Communications products within the UK and Ireland. As a trade-only supplier, JustCom offers a high-quality range of products with technical support from staff with over 100 years of combined experience in the Two-Way Radio industry.
• BittiumminorChannel Partner/ Reseller/ DistributorG6 Global is a UK partner for Bittium from Finland. Bittium designs and manufactures tough smartphone devices with the highest security requirements for professionals. G6 resells the Bittium Tough Mobile 2, described as one of the most secure smartphones available.
• Overwatch CSminorGTM or Marketing PartnerG6 Global partnered with Overwatch CS to introduce their counter surveillance system to the UK Private Security market. Overwatch can determine if a specific vehicle or individuals may be following a client.
• 4x4 ResponseminorGTM or Marketing PartnerG6 Global works with certain 4x4 Response teams to keep volunteers in touch with each other and communications flowing. 4x4 Response comprises voluntary organisations covering the UK assisting emergency services, local authorities, and other volunteer agencies.
• IridiumcoreTechnology or IntegrationG6 leverages the Iridium network of 66 Low Earth Orbit satellites for satellite PTT communications. Iridium provides the most comprehensive global coverage and is best placed for both telephone and beyond-line-of-sight push-to-talk radio calls. The IC-SAT100, developed in partnership with Icom, provides global PTT capability.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Emerging players

• Bittium: Finnish provider of secure tactical communications including the Tough Mobile smartphone that G6 resells. Overlaps with G6 in secure mobile devices and defence/secure communications for government end users.
• TASSTA: Push-to-talk and communication management software provider; listed as a G6 technology partner. Comparable in delivering PTT-over-cellular platforms to enterprise and security customers.
• Zello: Push-to-talk over cellular app used widely by security, hospitality, and enterprise teams. Comparable to G6's LYNX-PTT offering in delivering app-based PTT, though Zello focuses on consumer-grade while G6 focuses on mission-critical and covert.

Direct peers

• Codan Communications (Barrett Communications): Specialist HF and tactical radio provider for defence, humanitarian, and government customers. Comparable to G6's HF radio deployments (e.g., Iraqi Civil Defence Corps, Wild Camel Foundation) and rugged mission-critical focus.
• Hytera Communications: Major DMR/dPMR two-way radio manufacturer and solutions provider serving public safety, security, and enterprise globally. Closely comparable to G6's DMR/dPMR digital radio offering and competes for similar end customers.
• Sepura (part of Hytera Group): TETRA mission-critical radio specialist serving public safety, military, and utilities. Comparable to G6 in mission-critical narrowband radio deployments for government and security end users.

Broad incumbents

• L3Harris Technologies: Major defence and tactical communications vendor with HF, tactical radio, and satellite solutions for military and government. Comparable to G6's military/special forces communications work but with much broader portfolio.
• Motorola Solutions: Global incumbent in mission-critical two-way radio, TETRA, and broadband PTT for government, military, and enterprise. Directly comparable technology stack (DMR, PTT, command and control software) to G6, but at vastly larger scale and broader portfolio.
• Airbus Defence and Space (Secure Communications): Provider of TETRA (Tetrapol) and broadband mission-critical networks for public safety and government. Overlaps with G6's mission-critical radio and broadband PTT offerings, though at much larger scale and with proprietary infrastructure.

Others

• Iridium Communications: Operator of the LEO satellite network that G6 leverages via the IC-SAT100 PTT partnership. Comparable in delivering global satellite PTT and connectivity for defence, maritime, and remote users; G6 is a reseller/solutions partner.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/g6-global
• Xx.com/g6global

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about G6 GLOBAL LIMITED