Category Archives: News

2021 January Newsletter

2021 is off and running

Firstly, I would like to welcome you all back for the 2021 new year. We hope you are feeling refreshed and recharged.

We here at ZCG used the annual End-of-Year break to spend well deserved time with family and friends.

Now that our entire team are all back on-board, we’re back into the full swing of manufacturing your RF solutions. We thought with a new year, we had better remind you of what makes ZCG stand-out from the competition.

Proudly Australian-owned and manufactured

With the world still in a topsy turvy feeling and unreliable logistics, domestically manufactured products are now more important than ever.

ZCG prides itself with a 15-working day manufacture timeframe on all our in-house items (we have information some competitors are taking 6-8 weeks to “manufacture”).

Our internal capability extends to CNC engineered sub-components, silver soldering and welding critical components, which results in a reliable, repeatable and controlled supply chain.

The ability of ZCG to manufacture as much product as possible within our Lindenow, Victoria manufacturing facility results in the ability to customise to your specific requirements no matter the quantity, installation requirements or termination giving you flexibility and reliability.

For enquiries contact our friendly sales team on +61 3 5157 1203 or email

Stockist of a wide range of RF accessories

Our range of RF accessories include coaxial cable (including our most popular RU400 (LMR-400™ equivalent), coaxial connectors & adaptorscoaxial lightning surge protectionmounting clamps & hardware.

We are a master of a lot, but not a manufacturer of everything, and for the items we don’t manufacture such as coaxial cable and connectors, our reliable suppliers have kept us stocked with coaxial cables, including some new additions in 2021, our RU240UF – equivalent to LMR-240-UF™ and our RU600 – equivalent to LMR-600™ – Times Microwave coaxial cable

If you’re unsure of our Part code/Part number of the coaxial cable. Click below to view our coaxial cable comparison help guide.

For our range of in-stock RF coaxial connectors, we could list them all below (we’ve listed a few), but that list would be rather a long one. The best place to see our ever expanding range of coaxial connectors and adaptors is our website.

Our range includes:
– N-type
– 7/16″ DIN
– Fakra

Don’t see your required coaxial termination on our website. Simply contact us directly via phone +61 3 5157 1203 or email directly to and our sales team will assist you with our solution.

Round or Square hole?

Yagi’s. Probably one of the most popular style of antenna used within the RF industry.
And the question always arises, why do we stock both round boom and square boom?

  • Our square boom Yagi’s ensure a true Vertical or Horizontal orientation without the use of a level or estimation-by-eye. Simply align the elements and dipole vertical or horizontal, tighten the clamp, connect your feeder cable and done! Added bonus – wind will not affect the orientation of your Yagi


  • Round boom Yagi’s suit installations where the mount pole isn’t quite vertical or horizontal (such as a tower leg). Use the round profile of the boom to rotate your Yagi into correct orientation, tighten the clamp, connect your feeder cable and done!

We hold the most common frequency ranges in-stock for immediate dispatch in UHF 400-700MHz or Mobile phone network capable. We also manufacture (in 15 working days of course) custom frequency and broadband dual dipole Yagi’s.

ZCG Product Price Rise

We here at ZCG have held off our yearly price rise to support our clientele through-out an unprecedent and tumultuous 2019 & 2020.

We will be implementing a product-wide price rise as of February 2021, due to cost of raw materials and general amenities increasing at alarming rates that ZCG can no longer absorb.

We thank you all for your on-going support.

Last order dates & closure dates 2020

Just a little Reminder…

Last Order dates 2020.

ZCG manufacturing and sales office, Lindenow, Victoria, Australia

To ensure you didn’t forget… we’re having a little break over the festive season.

We’ll be closed from Wednesday 23rd December 2020 and back open on  Monday 11th January 2021. Relaxed, recharged and ready to assist you in 2021 with all your RF solutions and custom requirements.

To make sure you get your RF solutions in 2020, check our last order dates below to ensure your order is processed and manufactured prior to our Christmas closure date, or contact us directly with any questions.

Please note: actual arrival date of your order will be determined by the courier company of choice. Please check their closure and opening dates for estimate of shipment once dispatched from ZCG in Lindenow Victoria.

Delays over the festive time may occur due to increased demand on the courier network. Please contact the courier company directly for more information about delivery times.

Last Build-to-order order date.

Wednesday 25th November 2020 – only a week away!
Place your order now, our manufacturing schedule is filling up fast!




Last In-stock order date.

Thursday 17th December 2020 – under a month to go!
Make sure you’ve got stock for the sunny Christmas break we feel it’s going to be a busy one!

Last shipment/dispatch date.

Friday 18th December 2020 – a month to go!
Then it’s over to Jolly St. Nick to do his deliveries…

Silvershield 2020 Update

ZCG are currently fulfilling our 5th contract for supply of custom RF solutions for counter R.C.I.E.D (remote control improvised explosive devices) for L3Harris and the Department of Science and Technology, our current contract involves supply of 45,000 units.

Australian Army officer Lieutenant Colonel Jason Medley installs a ‘Silvershield’ electronic force protection roof mounted antenna system, designed for the Afghan National Defence and Security Forces to counter radio-controlled improvised explosive devices.

In total ZCG will have by completion of this contract supplied +215,000 units for Counter I.E.D. applications for troops on the front-line.

A recent request for expedited assembly and delivery due to Covid-19 restrictions has been achieved by ZCG with a current 2-week forward advancement on supply of our RF antennas.

The Counter-I.E.D. system has successfully being installed into a wide range of military and transport vehicles utilised by both domestic and international troops. The system was also retro-fitted for used in a fixed location for polling stations during elections and vote collation.

Australian Army officer Lieutenant Colonel Jason Medley installs a ‘Silvershield’ electronic force protection system, designed for the Afghan National Defence and Security Forces to counter radio-controlled improvised explosive devices.

ZCG’s partnership with our defence department, universities and tier 1 suppliers is ever-expanding, and we are proud to work directly with our clientele to ensure troops are at the forefront of protection in the ever changing battlefield.

News: New Product Released

ZCG have newly released a Wideband UHF 400-520MHz elevated feed whip.

Working directly with our customer bases requirements, ZCG prides itself on producing Australian designed and manufactured antennas to suit the ever changing RF market requirements.

ZCG newest UHF wideband 400-520MHz elevated 2.1dBi whip is suitable for all applications where our larger ZN4 or ZN3 range of antennas are height excessive or where higher gain is not a requirement. The GID-MB4052-S is also ground independent so can be mounted on any vehicle in any location. Suitable for emergency services, courier companies, transport vehicles or any requirement for UHF or TETRA. – Downloadable specification sheet PDF – click here

In-stock in our Head Office manufacturing facility, available in-stock in Queensland and Western Australia soon. Or if soon is too long, contact your local Sales office for price and availability. – click here

For UHF CB radio applications this antenna covers the entire CBRS 476.425 – 477.4125MHZ – see our downloadable 80 Channel UHF CB Channel Guide PDF here or 40 Channel UHF CB Channel Guide PDF here.

Typical SWR of GID-MB4052-S covering UHF 400-520MHz

The GID-MB4052 is also available in a fixed position/base station/structure mounted or light-duty vehicle configuration without the parallel spring base. This models mounting is via the M10 x 1.5 pitch male thread at the bottom of the ground independent elevated feed base. 

ZCG exhibit at Comms Connect Sydney 2018

ZCG has recently returned from a successful Comms Connect Sydney located at Rosehill Gardens race course in Western Sydney.

ZCG would like to firstly thank the Narelle Granger and the WFevents/ Comms Connect team for organising the exhibition as well as the Critical Comms team for all their hard work and assistance leading up to the exhibition.

Garry Kelly on ZCG stand 37 at Comms Connect Sydney 2018

ZCG would also like to thank all of the customers as well as new contacts who came and visited and enquired at stand 37. ZCG has received some valuable feedback as well as new prospects that ZCG will assist to supply high quality solutions for their requirements.

Sally-ann Kelly and Garry Kelly on ZCG stand at Comms Connect Sydney 2018

ZCG have new returned to our head office in East Gippsland, Victoria, and are already organising our stand for Comms Connect Melbourne 2018. The Comms Connect Melbourne runs from the 21-22nd November 2018 at the Melbourne Convention and Exhibition centre, register your free visit now by clicking here

If you’re heading to Comms Connect Melbourne, ZCG will be proudly exhibiting, more information and stand location will be available closer to the date.

Find out how to get the exhibition here.

Lindenow antenna company ZCG tunes up for major Defence deal

ZCG has received a significant contract to supply high-end antennas for the Australian Department of Defence as part of technology designed to keep troops safe from explosions in the field.

See latest media release click here

The advanced troop protection system, designed by the Defence Science and Technology Group and manufactured by L3 Micreo in Brisbane, includes custom-made antennas, designed, tested and manufactured at ZCG’s Lindenow head office.

The locally made antennas are a critical component of the suite of robust troop-protection devices specifically designed for use by Afghanistan National Defence and Security Forces, for use by troops on foot, and mounted in light vehicles.


Engineering department footage for WIN TV recording – Project ‘REDWING’

“The ZCG technical team spent six months last year working with our partners in Defence to develop antennas for devices that block radio-frequency transmission so enemy combatants can’t remotely trigger improvised explosive devices (IEDs),” ZCG managing director Garry Kelly said.

“Our antennas play an important role in keeping troops safe from IEDs in conflict zones around the world.”

The family-owned company designs and manufactures antennas for extreme conditions.

Under the direction of Mr Kelly, a radio-frequency expert, ZCG offers premium off-the-shelf and customised solutions to customers around the world. It provides everything from mobile antennas for use on vehicles and the marine industry; base stations for police and emergency towers; through to custom-designed broadcast antennas that enable radio and TV broadcasters to deliver a high quality, targeted signal. Autonomous haul trucks in the mining industry also rely on their products.

Garry Kelly WIN TV and local newspaper interview for ‘REDWING’

This is the second time the company has worked with Defence and L3 Micreo on this project, known as REDWING.

“Over the past two years, we have supplied more than 150,000 antennas, on time and on budget, for the first version of this technology,” Mr Kelly said.

“But this contract takes our business to a whole new level. As a small rural enterprise, we had to step up and increase our capability so we were eligible to win larger, more complex defence contracts.”

ZCG has worked hard to improve its systems to ensure it meets the minimum criteria for engaging with major defence players.

It renovated and restructured its Lindenow head office and completing a lean manufacturing and continuous improvement program run by Melbourne consultants OPTIM Improvement and co-funded by East Gippsland Shire Council.

The program helps local businesses to structure and operate their workplaces to be more competitive in domestic and export markets.

ZCG has now earned certification for ISO 9001 : 2015 Quality Management Standard, which means the company is operating at an internationally recognised standard. It also now qualifies for the ISO 14001 : 2015 Environmental Management Standard and AS/NZS 4801:2001 Health and Safety Management Standard.

The Minister for Defence Personnel and Veterans Affairs and Federal Member for Gippsland, Darren Chester, said it was a great achievement for regional businesses, such as ZCG, to win significant national contracts.

Garry Kelly (L) informing MP Darren Chester (R) about antennas and ZCG’s contribution within ‘REDWING’ project

“It is essential for small companies such as ZCG to win major contracts, which help secure jobs, strengthen Australia’s capabilities and ensure the security of technology,” Mr Chester said.

“ZCG employs 20 people in Gippsland and winning this contract is a wonderful achievement and reward for all their hard work.”

Author: Kylie Miller

Cupcake Communications

ZCG re-accredited under ISO

ZCG’s constant improvement policy has recently resulted in ZCG being re-accredited with ISO certification in Quality management systems ISO-9001:2015, Environmental management systems ISO14001 and Occupational health and safety management systems AS/NZS-4801:2001

ZCG prides itself on being accredited and compliant with ISO, so all of our customers can be reassured ZCG is holding itself to the highest domestic and international standards.

ZCG is proud to be re-accredited with the ISO 14001 environmental management system accreditation, and is striving to move to ever more environmentally friendly solutions within manufacturing. We as a company believe that its our responsibility to introduce carbon reduction in our manufacturing, energy usage as well as waste disposal and recycling to ensure minimal impact on our environment.

ZCG has invested in a solar panel installation to greatly reduce our usage of fossil fuel energy production, removed lead usage from our solder, and cadmium from our silver solder. We have invested and been using for years a water based, environmentally friendly, machine cooling fluid.

ZCG is constantly reviewing and investing in processes and products that will assist us in reducing our carbon footprint.

ZCG’s New 4GX Range

With the introduction of the new 4GX or 4G LTE mobile phone network, ZCG has created a range of 4GX/ 4G LTE specific antennas in a marine, vehicle mount and fixed position availability.

The new 4GX/ 4G LTE frequency works within the 700-788MHz and allows for an improved mobile phone coverage, in both CBD and rural areas, as well as a faster wireless data speed with Telstra quoting:  

 “up to six times as fast as our original 4G” – Telstra website (

This results in faster streaming/downloading and access to a wider mobile phone network. ZCG has matched our antennas specifications to help boost the 4GX/ 4G LTE mobile phone network to ensure you are always connected, whether in the car, at home or on your marine vessel, ZCG has a 4GX/ 4G LTE antenna solution to suit your needs.

ZM18-4GX – Vessel Mount

Omni-directional Marine 4GX/ 4G LTE collinear, 700-788MHz, FME connector, 20 Watts, 8.1dBi – 1.8m.

CM1600-4GX – Structure/Tower

Omni-directional 4GX/ 4G LTE collinear, 700-788MHz, N-type female in mount section, 20 Watts, 8.1dBi – 2.4m

SG700-4GX – Vehicle Mount

Super gain vehicle mount 4GX/4G LTE and 3G collinear, 718-788MHz and 820-890 MHz, FME female, 5.1dBi – 1.1m

ZD8Z-XP-MIMO – Wireless Data Improvement

Telstra, Optus & Vodafone 4GX/ 4G LTE, 4G, 3G multiband panel, 698-960 & 1710-2700MHz, +/- 45 deg polarised,  2 x N-type females, 100 Watts, 8dBi – 310mm


Check your Telstra 4G LTE (4GX) availability:

Check your Optus 4G LTE (4G PLUS) availability:

Check your Vodafone 4G LTE availability:

To find your local ZCG dealer – click here

For more information on any ZCG 4GX/ 4G LTE products or our wider range of mobile phone and wireless data improvement solutions. Please contact your local ZCG sales consultant.

The long awaited ALL-BLACK Range Is finally here!

Do you want an all black vehicle mount to keep the stealth and aesthetically pleasing appearance of your vehicle?

Well ZCG’s all black range is now available!

With our sleek, stylish and stealthy all black design, combining black chrome and a black radome matched with our  already proven antenna designs and Australian manufacturing. ZCG’s all black range is your ideal all-black antenna solution.

Find your local ZCG dealer or contact ZCG for pricing and availability. 

ZCG All-Black antenna solutions available:

Mobile Phone Network Improvement:


All-black super gain, Telstra, Optus & Vodafone 4G, 3G & GSM mobile phone spring base antenna – 825-960MHz & 1710-2190MHz – 900mm

All-black lightweight super gain, Telstra, Optus & Vodafone 4G, 3G & GSM mobile phone spring base antenna –825-960MHz & 1710-2190MHz – 750mm

UHF CB Radio Communications:


All-black UHF CB Radio, ground independent, spring base antenna, 477MHz, 2.1dBi, UHF Male – 900mm


All-black lightweight UHF CB Radio, ground independent, spring base antenna, 477MHz, 2.1dBi, UHF Male – 750mm

AM/FM Radio Improvement:


All-black AM/FM radio receive spring base antenna – 900mm


All-black AM/FM radio receive lightweight spring base antenna – 750mm

ZCG also have a matching range of the above antennas in white or black fibreglass radome with a electro-polished spring base.

Find your local ZCG dealer or contact ZCG for pricing and availability. 

ZCG featured in Critical Comms article

Original article by Critical Comms can be found here.

Article written by Jonathan Nally on 4th April, 2016.

Taking Australian technology to the world

ZCG Scalar has successfully carved out a specialist niche in both the domestic and export markets.

Antenna manufacturer ZCG Scalar was founded at Lindenow in Gippsland, Victoria, in 1970 by Gregor Cox, a ham radio enthusiast with the call sign VK3ZCG. Cox had identified a gap in the market for amateur radio antennas, but the business soon expanded its scope, supplying users such as the police force and emergency services, and essentially anyone else in the region who needed an antenna.

The business was bought by Garry and Sally Kelly in the mid-2000s. At that stage it still had a heavy focus on mobile antennas for land and marine vehicles, but Garry’s experience with broadcast and base stations meant that the company started getting a lot of work from the broadcasters. Although the business today still has a niche within the mobile antenna market, it is no longer reliant on it, having long since broadened is remit to cover broadcast television and radio, telcos, marine, backhaul, military users and other sectors.

Lindenow is located near Bairnsdale, about three hours’ drive from Melbourne. “It’s rural — if you came down here, we’re in the middle of Victoria’s veggie bowl,” said Trevor Small, ZCG Scalar’s general manager. “One of the reasons we’re here is that we get ‘clean air’ for antenna design and development and testing. We don’t get radio interference.

“Our test range fires out over 100 acres of vacant land,” he added. “We can spin the antennas and see what they do on a 360.”

Aerial view of ZCG Scalar head office building

ZCG Scalar’s head office and manufacturing facility at Lindenow, Victoria.

As well as the manufacturing base and head office in Lindenow, the company has warehousing and sales offices in Perth and Brisbane. It also has a technical services division at Lindenow, responsible for research and development, site coverage predictions and radiation exposure testing.

Despite its rural location, the company has built up an enviable reputation in the export market. “We’re certainly not exporting our mobile antennas; the market’s so flooded with cheap Chinese [antennas],” said Small. “But our specialised antennas are being used in South-East Asia, and we send products to Africa, Afghanistan and many other countries. Some of it gets used for military purposes, but it also gets used for mining communications, transportation fleets, tracking, taxi fleets and so on.”

Closer to home, Small said the company sells a lot of antennas into the agricultural sector, for instance for telemetry in vineyards. Vineyards are very sophisticated these days, with moisture sensors in the ground, taps that need to be turned on and off at certain times and so on. Data and commands are collected and sent wirelessly.

An unusual job was contributing antenna technology to a radio device that can counter the kind of improvised explosive devices found in hotspots such as Afghanistan. The two variants — Greengum for soldiers and Greygum for fitting to light vehicles — are seeing service on the frontline.

According to Small, one of the biggest constraints on antennas in this day and age is transportation. “Long, thin tubes are expensive and difficult to transport, so we’re always looking at how to make [our antennas] more compact for shipping,” he said.

When asked about where ZCG Scalar sits in the market, Small said, “We’re big enough to handle high-volume builds, but we’re small enough to do custom builds and do flexible designs for customers’ particular needs.

“A lot of companies can’t do that,” he added. “They’ll do it if you’re going to order 10,000, but if you don’t need 10,000 then [they’re not interested].

“[For instance] we did a custom antenna for a US warship. They needed it to ‘fit here’, and they needed it ‘this long’, and ‘this particular bandwidth’… and it bolted straight in, so they were pretty happy,” he said. “We’ve [also] made some prototypes for the ANZAC frigates. That’s the sort of thing we’re capable of, and that’s where ZCG’s niche is.”

“We have one customer who wanted an antenna that was just pretty much bulletproof, to put on the survey buoys that are around the top of Australia for tsunami warning and surveillance and tracking,” said Small. “And he said, ‘I can’t afford to have it fail. I’ve got a 50-nautical-mile journey out there in a boat, so I need an antenna that’s really bulletproof [and] I need a custom mount to fit on the buoys. Can you help me out?’ Two weeks later we had a design for him, and he said ‘You beauty!’ He said no-one else was going to be able to do that for him.

“We get a lot of those kinds of requests, and in most cases we can help them out.”