Grazioli FE6V

Orders received in the period 6/29 August
will be processed after 30 August

137,00

shipping costs visible in the order depending of your country

In stock

Main features:

  • Vertical 5/8 λ VHF antenna. Adjustable from 50 to 54 MHz with whip length adjustment chart.
  • Extremely robust construction in AW6063-T66 aluminium alloy.
  • Supplied with high-quality 304 and 316 stainless steel fasteners for long rust-free operating life.
  • The Ground plane consists of four full quarter-wave radials.
  • High input power, up to 2 kW continuous all-mode.
  • Complete with detailed assembly manual and serial number that identifies the production batch and construction data.


PLEASE NOTE
:

this product is for sale only on our website. You will not find "Grazioli" products in any shop or large distribution centre.

If you need support for this product, please check the manuals in the support section.

Materials and Construction

Materials

For our tubes, we have used the best antenna construction alloy available:
AW6063-T66 is an alloy of Aluminium, Magnesium and Silicon that is hardened to a T-66 temper which gives the stylus exceptional resistance. It is shaped by extrusion and subsequent cold drawing.
Our tubes are extremely accurate on both diameters and also on the wall thickness, ensuring a precise fit with less ‘play’ between the tubes.

The ground plane is composed of four robust full-quarter wave radials with a length of 1.4 m. Each radial is a single-section tube with a diameter of 13 mm and wall thickness of 1.25 mm, fixed to the support plate by means of two U-bolts and self-locking nuts, in the fixing area.
Four glass fibre reinforcements are provided to strengthen the joints and prevent the pipes from being crushed.

The technical solutions that make the difference

The technical solutions

Why build an antenna capable of withstanding 2kW of continuous power?

Because an antenna that accepts high power is a more efficient antenna. Otherwise, it would tend to heat up due to the Joule effect and dissipate a significant part of the applied RF power as heat, something that happens with most competing products but which, unfortunately, users cannot test for want of adequate equipment and instrumentation.

SWR & SMITH CHART

The high-"Q" coil

The coil plays a key role in impedance matching and maximum RF power transfer.
Q, the Quality Factor, is determined by its length/diameter ratio, the pitch between the turns, the material, the diameter of the wire and the presence or absence of metal cores.

In simple terms, the higher the Q of the coil, the lower the high frequency losses.
We have created a generously sized coil suspended in air without metal cores, with widely spaced turns obtaining one of the highest Q values technically possible.
This ensures maximum efficiency and the ability to withstand high RF power levels.
In addition, the coil is directly dc-grounded to ensure that atmospheric disturbances and background noise are significantly reduced.

UHF Connector

The FE6V antenna connector is not the commercial SO-239 type used by most manufacturers. Our connector is designed and built directly by ourselves; it has a true 50 Ohm characteristic impedance and is rated up to 500 MHz.

We have created a reliable connector capable of withstanding 5 kW of continuous RF power at 30 MHz and greater than 3 kW at 50 MHz.

 

The body is made of CW614N nickel-plated brass, while the pin is plated in 24K gold to avoid oxidation and is equipped with a 4-fin insulator that maintains its centring and elasticity to avoiding contact losses.
The insulating material is PTFE, one of the best insulators due to its exceptional electrical and thermal properties (low dielectric constant and reduced loss factor, operating temperature from -100 to +260 °C). The entire assembly is protected by a special elastomer hood that prevents infiltration of water and humidity.

Anchor bracket

Bracket

Made of 2.5 mm-thick AISI 304 stainless steel, it is attached to the antenna tube by means of a clamping system, creating an extremely robust mechanical lock.

The mast coupler is consists of an M6 V-Bolt in AISI 304 steel and column nuts for easy, secure tightening.

Our Electronic Equipments

Technical Data

Electrical Data Mechanical Data
Antenna Type 5/8 λ VHF GP with four full ¼ wave radials Construction materials Aluminnum Alloy AW6063-T66 hard drawn tube, Fiberglass, Brass, PTFE.
All hardware are made of SS AISI-304 and 316
Frequency range Tunable from 50 to 54 MHz (with Graph) Wind surface area 0,16m2  / 1.72ft2
Impedance 50Ω Unbalanced Wind load @ 130Km/h / 80Mph 15,6Kgf  /  34 lbs
Radiation Type Omnidirectional Wind survival (no ice) 150 Km/h  /  93 MPH
Polarization Linear – Vertical Antenna height 4.17m / 13.7 ft @ 50 MHz
Gain 1,5dBd – 3.65dBi Radials length Full quarter wave 1,4m  /  4,6 ft
Bandwidth @SWR 2:1 ≥3.1MHz @ 50MHz Mounting mast bracket ø 40-54 mm  /  ø 1,57” to 2-1/8”
SWR @resonance ≤1.2:1 @ antenna connector Antenna Net weight 3,34 Kg  /  7,4 lb
Max. Input Power 2000 Watts continuos all mode Package dimensions 14x14x145 cm  /  5,5”x5,5”x57,1”
Feed system high-Q air wound matching coil, DC-Ground
Input connector 50Ω UHF female PTFE insulator, gold plated pin
Electrical Data
Antenna Type 5/8 λ GP with four full ¼ wave radials
Frequency range Tunable from 50 to 54 MHz (with Graph)
Impedance 50Ω Unbalanced
Radiation Type Omnidirectional
Polarization Linear – Vertical
Gain 1,5dBd – 3.65dBi
Bandwidth @SWR 2:1 ≥3.1MHz @ 50MHz
SWR @resonance ≤1.2:1 @ antenna connector
Max. Input Power 2000 Watts continuos all mode
Feed system high-Q air wound matching coil, DC-Ground
Input connector 50Ω UHF female PTFE insulator, gold plated pin
Mechanical Data
Construction materials Aluminnum Alloy AW6063-T66 hard drawn tube, Fiberglass, Brass, PTFE.
All hardware are made of SS AISI-304 and 316
Wind surface area 0,16m2  / 1.72ft2
Wind load @ 130Km/h / 80Mph 15,6Kgf  /  34 lbs
Wind survival (no ice) 150 Km/h  /  93 MPH
Antenna height 4.17m / 13.7 ft @ 50 MHz
Radials length Full quarter wave 1,4m  /  4,6 ft
Mounting mast bracket ø 40-54 mm  /  ø 1,57” to 2-1/8”
Antenna Net weight 3,34 Kg  /  7,4 lb
Package dimensions 14x14x145 cm  /  5,5”x5,5”x57,1”

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