Sirio's new Gain Master HW (Half Wave) is a fiberglass omnidirectional base station antenna for 10m and 11m amateur bands and is made up of telescopic fiberglass tubes.

Engineered with the most advanced technologies it is completely manufactured in Italy, with high-quality materials.

The design of the radiant element works like a centrally fed dipole so all RF currents on the radiator are in phase so the ground plane radials are not necessary.

The coaxial coil at the bottom works like RF - choke for the optimum decoupling from the mast and feeding line.

SPECIAL FEATURES: * Base station antenna, Omnidirectional

* High tech fiberglass for 10m and 11m

* 0.5λ Center feed vertical dipole

* Low radiation angle for excellent DX

* Fiberglass 3 section composite tube

* Ground Plane Independent (No radials required).

TECHNICAL SPECIFICATIONS:

* Type: 1/2λ Center fed vertical dipole

* Frequency Range: Tunable from 27.2 to 30 MHz

* Gain: 0 dBd, 2.15 dBi

* Bandwidth @ SWR ≤ 2: ≥ 1800 kHz @ 27.2 MHz

* Max. power: 500 Watts (CW) continuous

* Connector: UHF-female, PTFE insulator & gold plated central pin

* Materials: Whip made of white fiberlass three section composite tube,

Radiator made of copper wire and low loss coax cable, stainless steel

hardware, anodized AW6060 aluminium, UV stabilized thermoplastic

* Height (approx.): 5560 mm / 18.24 ft

* Weight (approx.): 2.6kg / 5.7 lb

* Packaging Dimensions: 1950 x 100 x 130mm / 77 x 4 x 5"

* Mounting mast: Ø 35-54 mm / Ø 1.4-2.1"

* Wind Resistance: Up to 160km/h, 100mi/h.