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Call 0345 2300 599The Grazioli G-Max is a high-performance collinear vertical antenna designed for serious 10m and 11m operation. Tunable from 27 to 28.5MHz, it uses a 5/8 wave over 1/4 wave in-phase collinear configuration to provide high gain, a compressed main lobe and a low radiation angle for excellent long-distance performance.
Built on the proven mechanical design of Grazioli’s FE10V, the G-Max is designed to offer performance comparable to, or better than, some small directional antennas, while retaining the practical advantage of omnidirectional coverage. This makes it an excellent choice for operators who want strong DX performance without needing a rotator or beam antenna system.
The antenna is constructed from cold-drawn AW6063-T66 aluminium alloy tubing, chosen for its strength, precision and long-term reliability. The tube sections are manufactured with accurate diameters and wall thicknesses, giving a secure fit with minimal play. All hardware is AISI-304 and AISI-316 stainless steel for excellent outdoor durability.
The ground plane uses four full quarter-wave radials, each 2.7m long, made from sturdy telescopic aluminium sections. The radials are fixed with U-bolts and self-locking nuts, with fibreglass reinforcements supplied to strengthen the joints and prevent tube crushing.
The G-Max uses a carefully positioned high Q coil between the central radiating sections. This provides phase delay between the 1/4 wave and 5/8 wave sections, compensates for capacitive reactance and transfers RF power efficiently to the upper section. The antenna is DC grounded, helping to reduce static build-up and atmospheric noise.
A custom Grazioli 50 ohm UHF female connector is fitted, with PTFE insulation and a 24K gold-plated centre pin for long-term reliability. The antenna is also supplied with a 3-point fifth wheel bracing system, which is strongly recommended for installation.
Key Features
- High-performance collinear vertical antenna
- 5/8 wave over 1/4 wave in-phase design
- Tunable from 27 to 28.5MHz
- Suitable for 10m and 11m operation
- Omnidirectional radiation pattern
- High gain, 3.5dBd or 5.65dBi
- Low radiation angle for improved DX performance
- Maximum power handling of 5kW continuous, all modes
- Four full quarter-wave 2.7m radials
- High Q phasing and matching coil
- DC grounded design to help reduce static and impulse noise
- Cold-drawn AW6063-T66 aluminium alloy construction
- AISI-304 and AISI-316 stainless steel hardware
- Custom 50 ohm UHF female connector
- PTFE insulation and gold-plated centre pin
- Supplied with 3-point fifth wheel bracing system
- Rugged G-Max stainless steel mounting bracket
Construction Details
The G-Max is built from precision AW6063-T66 aluminium alloy tubing, with fibreglass, brass and PTFE components used throughout the antenna system. The custom Grazioli connector uses a nickel-plated CW614N brass body, a 24K gold-plated centre pin and PTFE insulation, protected by a special elastomer cap to help prevent water and humidity ingress.
Installation Notes
Due to its height and performance-focused design, the G-Max should be installed on a suitable support mast with clear space around the antenna and radials. The supplied 3-point fifth wheel bracing system should be used for additional stability. As with all high-power vertical antennas, careful mechanical installation, weatherproofing and good quality coaxial cable are important for best long-term performance.
Shipping & Delivery
We offer UK and international delivery services, including next working day and selected weekend options for eligible orders. Available services, prices and estimated delivery times are displayed at checkout.
Delivery Information
Delivery options depend on the parcel's size, weight, contents and destination. Express and weekend services are subject to availability and cut-off times. Oversized or exceptionally heavy items may require a specialist delivery quotation.
Returns & Cancellations
To arrange a return, please contact ML&S or complete our returns form. You may also exercise your statutory right to cancel by email or another clear statement, without completing the form.
Changed Your Mind?
Under the Consumer Contracts Regulations 2013, most purchases made online or by telephone can be cancelled within 14 days of receipt.
You must notify us of your cancellation within this period and return the goods within a further 14 days.
Please handle all goods with care. Returned items must be in a resaleable condition, complete with their original packaging, and all supplied accessories.
You may inspect goods as you would in a shop. Handling beyond what is necessary to inspect them may result in a lawful deduction for diminished value.
Exceptions
Modified Equipment & Reversal Charges
Additional return conditions may apply to equipment modified at the customer's request, including wideband transmit or receive modifications.
ML&S may charge a reasonable fee to reverse physical modifications and restore the equipment to its original factory specification. Any such charge will be agreed in advance and deducted from your refund.
Custom-Made Cable Assemblies
Coaxial cable assemblies manufactured to a customer's specifications are excluded from the 14-day return policy and are non-refundable unless faulty.
Software & Labour Charges
Labour and modification charges requested by the customer are non-refundable once the work has been completed.
Computer software may only be returned under the 14-day return policy if it remains sealed and unopened.
Return Postage Charges
Customers are responsible for the direct cost of returning unwanted or incorrectly ordered goods, where permitted by law. You may arrange your own suitable return postage or use one of our optional prepaid services.
Standard Parcels
Royal Mail Return Label
£5.95
Per parcel
For eligible standard-sized parcels, subject to Royal Mail restrictions. Free collection included.
Larger Parcels
DPD Return Label
£7.95
Per parcel
For larger or heavier parcels and any shipments with batteries.
Collection Service
DPD Collection
£25.00
Per parcel
Available upon request for eligible addresses, subject to availability.
Prepaid return charges will be confirmed before booking and deducted from your refund.
These prices apply to eligible UK mainland returns. Oversized items, specialist products and returns from other destinations may require a separate quotation. Estimated return costs will be disclosed before purchase.
Faulty or Incorrectly Supplied Goods
Return postage charges do not apply to faulty, damaged or incorrectly supplied goods returned under statutory rights. ML&S will arrange a free return in these circumstances.
Refunds
Refunds are processed without undue delay following receipt and inspection of returned goods, and no later than 14 days after we receive goods returned under statutory cancellation rights.
Refunds will be issued to the original payment method. Any prepaid return postage charges or lawful deductions for diminished value will be itemised.
Warranty Terms & Conditions
New Equipment Warranty
Minimum 2-Year Warranty
All new products supplied by ML&S carry a minimum two-year warranty against manufacturing defects, excluding batteries, which are covered by separate warranty terms.
Some manufacturers provide extended warranties, such as the three-year warranty available on eligible Yaesu equipment. Any additional coverage is subject to the manufacturer's terms and conditions.
Our workshop may assess and repair faulty equipment on site or refer it to the manufacturer or an authorised service centre where necessary.
Warranty exclusions may include batteries, normal wear and tear, accidental damage, misuse and unauthorised modifications, as specified in the applicable warranty terms.
All warranties are provided in addition to your statutory consumer rights against ML&S, which are not limited by the warranty period.
International Returns & Warranty
Unless otherwise stated, ML&S warranty servicing is carried out in the UK. International customers must contact us before returning goods to confirm shipping and customs requirements.
International customers are responsible for return postage unless the goods are faulty and ML&S has been notified within a reasonable time.
ML&S accepts no responsibility for additional charges resulting from incorrectly completed customs documentation. Any additional duties charged to ML&S as a result will be billed to the customer before return of the goods.
Need Help With a Return?
Our team can assist with returns, postage arrangements, modifications and warranty claims.
Nothing in these terms excludes or limits your statutory consumer rights.