Product Description:Vertical multiband 1/4 λ Ground Plane base-fed antenna for the following HAM bands: 20, 17, 15 12, 10 and 6m.
Extremely robust construction in AW6063-T66 aluminum alloy and CNC machined parts from solid stock.
Supplied with high-quality 304 and 316 stainless steel fasteners for long rust-free operating life.
High input power, up to 3 kW continuous All-mode.
Detailed assembly manual and serial number that identifies the production batch and construction data.
The stylus consists of a central radiator for the lower 20m band flanked by 4 side stubs resonating on the higher 17,15,12,10 + VHF 6m bands. The side stubs are 1/4 wavelength without traps that would reduce their efficiency. The antenna is fed directly without the use of impedance adapters or transformers, which would introduce losses and limit the applicable power, and is equipped with a high-impedance inductance that creates a DC short circuit, grounding any disturbances caused by atmospheric events and/or electrostatic discharges.
Calibration is done by adjusting the telescoping parts of the stubs and the central stylus, each frequency is independent and does not affect the other bands, except for the 17m band, which also determines the resonance of the 6m band: We recommend the use of a graphic antenna analyser such as Rig-Expert or Nano VNA, which makes calibration much easier.
Now supplied with the MV6 is an original FAIR-RITE Made in the USA FT240-43 ferrite toroid for “Home Made” construction of your high-performance Choke. This arrangement allows you to significantly attenuate common mode currents in the HF band (1.8-30MHz), which could reduce the performance of your antenna.
Material not supplied at customer's expense for fabrication:
- No.2 PL259 connectors suitable for the type of cable you intend to use.
- (1 PL259 + 1 SO239 in case of using plastic protection box).
- Approximately 1.2m of good quality coaxial cable, such as RG58 for continuous powers up to 300 Watt AWG @ 30MHz, or RG142BU in Teflon for continuous powers up to 1500 Watt AWG @ 30MHz.
The MV6 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 assembly is protected by a special elastomer hood that prevents water and humidity infiltration.
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Manual