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Sirio's new Gain Master HW (Half Wave) is a fibreglass omni-directional base station antenna for 10m and 11m amateur bands and is made up of telescopic fibreglass 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 central 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 mast and feeding line.                                                                                        


* Base station antenna, Omnidirectional

* High tech fibreglass 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)



* Type: 1/2λ Center feeded 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 / 11.2 feet with bracket

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 


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Company VAT Number: GB 741 2551 57 - Company Registration Number: 03812091
Sharman multiCOM Ltd, 7 Brightgate Way, Cobra Court Estate, Barton Dock Road, Stretford, Manchester, M32 0TB UNITED KINGDOM