1 in stock

Tha Gain-Master™ is a high tech fiberglass base station antenna for CB and 10m amateur band. It is completely designed by the electromagnetic simulation to achieve the maximum gain and optimize the radiation pattern and bandwidth.  Engineered with the most advanced available technologies it is completely manufactured in Italy with high-quality materials.

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

1 in stock


SKU: 2113220.00 Category:


  • Completely computer designed, it’s made and assembled entirely in Italy with the finest materials available, starting from the whip which is carried out in four sections of 1.92m telescopic tubes with triple-layer fiberglass; it makes Gain-Master much more durable and rigid than the competitors.
  • The new design of the radiant element works like a centrally fed 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 the mast and feeding line.
  • Made of telescopic fiberglass tubes, it is DC-grounded for the best protection from static discharges.
  • All screws are stainless steel made, clamps are made of stainless steel AISI316, the bracket aluminum tube is made of alloy AW6060 AlMgSi anodized gray.
  • All metal components are made in SIRIO factories with the latest CNC lathes using CW614N brass and adequately protected by galvanic treatment.
  • The central pin of the UHF-female connector is 18 Kt gold to improve electrical contact and to prevent oxidation; the insulator is made of PTFE.
  • The low loss coaxial cable with red jacket used for the construction of the coil is built on SIRIO specifications by a leading Italian company and is wound around support made with the best material available for outdoor applications, the ASA.

Features and Specifications:

  • “Gain-Master” – Hi-Tech Omni-Directional Fiberglass 10 m to 12 m Base Antenna
  • Type: Base Loaded
  • Type: 5/8 Wave Center Fed Vertical Dipole
  • Radiation: Omnidirectional
  • Polarization: Linear Vertical
  • Max Gain on the Horizon: 1 to 2 dB higher than Conventional 5/8 Wave Base Antennas
  • Frequency Range @ SWR <= 2.0: 25.5 to 30MHz – No Tuning Required
  • CB 27MHz and 10m to 12m Amateur Bands (12m Band Covered with Manual/Automatic Tuner) – 400 CB Channels & 10 m Ham Band
  • Impedance: 50 Ohm
  • Power: 500 Watts (CW) Continuous / 1000 Watts (CW) Short Time
  • Grounding Protection: DC-Ground
  • Lightning Protection All Metal Parts Are DC-grounded, the Inner Conductor Shows a DC-Short
  • Connector UHF-Female (SO-239), PTFE Insulator and Gold Plated Center Pin
  • Mounting Type: On-Mast
  • Mounting Mast Diameter: 35-54 mm (1 3/8″ – 2 1/8″) Side Mast with “V” Bolt
  • Materials:
    • Whip Made of White Fiberglass Composite Tube (4 Sections)
    • Radiator Made of Copper Wire and Low Loss Coax Cable
    • Stainless Steel Hardware
    • All Materials: Anodized Aluminum, Copper, Stainless Steel, Fiberglass, Thermoplastic UV Stabilized
  • Wind Resistance Up to 160 Km/h
  • Height: 7360 mm (24.1′) with Bracket, Radiator 6850 mm (22.5′)
  • Package Dimensions 1950 x 100 x 130 mm / 6.4′ x 0.33 ‘ x 0.43’
  • Weight: 3 Kg / 6.6 lbs
  • Color: White with Red Coil
  • Sold: Each


Technical DataGain-Master
Type5/8 Wave Center Fed Vertical Dipole
Frequency Range @ SWR <= 2.025.5 – 30 MHz wide band from 10m to 12m* ham band
*12m band covered with manual or automatic antenna tuner.
Impedance50 Ohm
PolarizationLinear Vertical
Max Gain on the horizon1 to 2 dB higher than conventional 5/8 Wave Base Antennas
Max Power500 Watts (CW) continuous
1000 Watts (CW) short time
Lightning protectionAll metal parts are DC-grounded, the inner conductor shows a DC-short
ConnectorUHF-female (SO-239), PTFE insulator & gold plated central pin
MaterialsWhip made of white fiberglass four sections composite tube, radiator made of copper wire and low loss coax cable, stainless steel hardware, anodized AW6060 aluminum, UV stabilized thermoplastic.
Wind Resistanceup to 160 Km/h using bracing rods
Height (approx.)7360mm with bracket, radiator 6850mm
Packaging Dimensions1950 x 100 x 130 mm
Weight (approx.)3 Kg
Mounting mastDiameter: 35-54 mm side mast with “V” bolt
Mounting typeOn-Mast


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