Sirio Gainmaster base station CB antenna, operating at 26-28MHz with a 5/8 wave.
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Sirio Antennas

Sirio Gainmaster base station CB antenna, operating at 26-28MHz with a 5/8 wave.

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Product code: 11-636
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Item CostFinance OptionDepositMonthly PaymentsTotal Cost
£159.95
12 Months 14.9% APR
£15.99
£13.78
£181.40
£159.95
18 Months 14.9% APR
£15.99
£9.19
£181.40
£159.95
24 Months 14.9% APR
£15.99
£6.89
£181.40
£159.95
36 Months 14.9% APR
£15.99
£4.59
£181.40
£159.95
48 Months 14.9% APR
£15.99
£3.45
£181.40
£159.95
12 Months 19.5% APR
£15.99
£14.34
£188.02
£159.95
18 Months 19.5% APR
£15.99
£9.56
£188.02
£159.95
24 Months 19.5% APR
£15.99
£7.17
£188.02
£159.95
36 Months 19.5% APR
£15.99
£4.78
£188.02
£159.95
48 Months 19.5% APR
£15.99
£3.58
£188.02

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Sirio Gainmaster base station CB antenna, operating at 26-28MHz with a 5/8 wave.

Sirio Gainmaster base station CB antenna, operating at 26-28MHz with a 5/8 wave.


The Sirio Gainmaster antenna 5/8 is a white fibreglass base antenna designed for use on the 26-28 MHz frequency range. It is engineered with electromagnetic simulation to maximize gain and optimize radiation pattern and bandwidth. Manufactured in Italy with high-quality materials, it stands at a height of 22ft.

The design of the radiant element, which is patent-pending, functions like a centrally-fed dipole. This eliminates the need for ground plane radials. The co-axial coil at the bottom acts as an RF choke, ensuring optimal decoupling from the mast and feedline.

Constructed with telescopic fibreglass tubes, the Gain Master is DC grounded to protect against static discharges. Sirio considers it to be the benchmark in its class of antennas.

Key Features/Specifications: Base Antenna 26-28MHz, Telescopic Fibreglass Tubes Construction, Type - 0.625 wave centre 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 centre 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.

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