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Sirio Gainmaster CB base antenna 25.5-30 MHz View larger



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Sirio Gainmaster CB base antenna 25.5-30 MHz 5/8 wave 7.36m

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Sirio Gainmaster CB base antenna, 25.5-30 MHz, no tuning required, 5/8 λ vertical dipole, 1 to 2 dB, 7.36m length, 500W max, glass fibre whip.

Supplied with: 1 Sirio Gainmaster CB antenna

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219,00 € tax incl.

182,50 €

tax excl.

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Data sheet

GainMaster™ is a high-tech 0.625λ glass fibre base station antenna for the CB and 10m amateur band fully designed by electromagnetic simulation to achieve maximum gain and optimise radiation pattern and bandwidth.

The new design of the radiator element works as a centre-fed dipole, so that all RF currents on the radiator are in phase and ground plane radials are not required.

The coaxial coil at the bottom works as an RF choke for optimum decoupling of the mast and feeder.

Made of telescopic fiberglass tubes, it is DC grounded for the best protection against static discharge.

- Type: 0.625 λ centre-fed vertical dipole.
- Frequency range : @ SWR ≤ 2.0 25.5 - 30 MHz 400 CB 10m ham band channels
- Impedance: 50 Ω
- Radiation: Omnidirectional
- Polarisation: Linear Vertical
- Maximum gain at horizon: 1 to 2 dB higher than conventional 5/8 λ.
- Maximum power: 500 Watts (CW) continuous, 1000 Watts (CW) short
- Ignition protection: All metal parts are DC grounded, inner conductor is DC shorted.
- Connector: UHF-female, PTFE insulated, gold plated centre pin
- Materials: White fibreglass whip, four section composite tube, copper wire heat sink and low loss coaxial cable, stainless steel material, AW6060 anodised aluminium, UV stabilised thermoplastic.
- Wind resistance: up to 160 Km/h
- Height: (approx.) 7360mm with stand, radiator 6850mm
- Mounting pole: Side pole Ø 35-54 mm with "V" bolt

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