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Sirio Gain-Master 5/8 Wave Fiberglass 25.5-30Mhz Base Antenna

$179.95

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  • Model: gainmaster
  • Shipping Weight: 4lbs
  • 7 Units in Stock
  • Manufactured by: Sirio Antenna

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Gain-Master is a 0.625λ high tech fiberglass base station antenna for CB and 10m amateur band

completely designed by electromagnetic simulation to achieve the maximum gain and optimize the radiation pattern and bandwidth.

Engineered with the most advanced available technologies it is completly manufactured in Italy with high quality materials.

The new design of the radiant element (Patent Pending) works like a central feeded dipole so all RF currents on the radiator are in-phase and 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.

Made of telescopic fiberglass tubes, it is DC-grounded for the best protection from static discharges.

Gain-Master™ is the new reference standard in its class of antennas..


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Electrical Data

  • Type 0.625 λ center feeded vertical dipole
  • Frequency Range @ SWR ≤ 2.0 25.5 - 30 MHz 400 CB channel & 10m ham band
  • Impedance 50 Ω
  • Radiation Omnidirectional
  • Polarization Linear Vertical
  • Max Gain on the horizon 1 to 2 dB higher than conventional 5/8 λ
  • Max Power 500 Watts (CW) continuous, 1000 Watts (CW) short time
  • Ligthning protection All metal parts are DC-grounded, the inner conductor shows a DC-short
  • Connector UHF-female, PTFE insulator & gold plated central pin

    Mechanical Data

  • Materials: Whip made of white fiberglass four sections composite tube, radiator made of copper wire and low loss coax cable, stainless steel hardware, anodized AW6060 aluminium, UV stabilized thermoplastic.
  • Wind Resistance up to 160 Km/h
  • Height (approx.) 7360mm with bracket, radiator 6850mm
  • Packaging Dimensions 1950 x 100 x 130 mm
  • Weight (approx.) 3 Kg
  • Mounting mast Ø 35-54 mm side mast with “V” bolt



  • This product was added to our catalog on Tuesday 29 January, 2013.

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