The Sirio Gainmaster antenna is for use on 26-28Mhz. Finished in a white fiberglass base antenna from Sirio that gives great performance over 26-28Mhz, and is designed by the electromagnetic simulation to achieve the maximum gain and optimize the radiation pattern and bandwidth. Engineered with the most available technology, manufactured in Italy from high-quality materials. height 22ft,

The design of the radiant element (patent pending), works like a centrally fed dipole, so all of the RF currents on the radiator are in phase, and ground plane radials are not necessary. The co-axial coil at the bottom works like an RF choke for optimum decoupling from the mast and feedline.

The Gain Master is made of telescopic fiberglass tubes, it is DC grounded for the best protection from static discharges. Sirio thinks it is the reference standard in its class of antennas.

Key Features/Specifications: Base Antenna 26-28MHz,

Telescopic Fibreglass Tubes Construction,

Type - 0.625 wave center fed vertical dipole,

Impedance - 50Ohms,

Radiation - Omnidirectional,

Polarization - Linear Vertical,

Max Gain on Horizon - 1-2 dB higher than conventional 5/8th wave,

Max Power - 500 watts CW continuous / 1000 watts short time,

Lightning Protection - All metal parts are DC grounded, inner conductor shows DC-Short,

Connector - UHF Female PTFE Insulator, and gold plated center pin.

Composition - White Fibreglass tube radiator / Stainless Steel Hardware

Wind Resistance - up to 160km/h,

Length (approx) - 7360mm with bracket / radiator 6850mm,

Packing dimensions - 1950 x 110 x 120mm,

Weight (approx) 3kg,

Mounting Mast - 35-54mm.