3/4 λ marine antenna working on 156-163 MHz without Ground Plane. It is particularly protected against the worst sea weather thanks to its conic glass fibre tube which makes it strong and solid in every situation. The radial whip is earthed in order to avoid stray R.F. currents and their discharges. All its metallic components are of chromium plated brass and stainless steel to get the robustness and full assurance; it is available in three different bases. It is provided with 5 m white cable RG 58 already connected. In the mentioned range of frequencies adjustments are not required.
Features:
Marine antenna, Mono-bandOmnidirectionalSB 3 M Low-gainDesigned to work without Ground PlaneProtection from static discharges DC-GroundChrome-plated brass ferrule High quality whip made of brass and copper protected by fiberglass tubeSupplied with white coaxial cable RG-58 C/U directly connectedWide range of optional mounting basesElectrical Data
Type: HF: 1/4 λ central loaded VHF: 1/4 λFrequency @ SWR ≤2: HF 26.45-27.55 MHz, VHF 139-151 MHzImpedance: 50ΩRadiation (H-plane): 360° omnidirectionalPolarization: linear verticalGain: 0 dB ref. to a λ /4 whipMax Power (CW) @ 30°C: HF 120 Watts, VHF 200 WattsConnector: UHF-male (PL 259)Type: SB 3 M: 3/4 λ J-poleFrequency range: TX band: SB 3M: 155.5 - 160 MHz @ SWR ≤2 RX band: 156-162 MHzImpedance: 50ΩRadiation (H-plane): 360° omnidirectionalRadiation (E-plane): SB 3 M: beamwidth @ -3 dB = 39°Radiation angle deg.: SB 3 M: 21°Polarization: linear verticalGain: SB 3 M: 2 dBd - 4.15 dBiMax. Power (CW) @ 30°C: 100 WattsGrounding Protection: All metal parts are DC-grounded, the inner conductor shows a DC shortStandard mount: SB 3 M: "M-8" NYCable length / Type: SB 3 M: 5 m / white RG 58Mechanical Data
Materials: Fiberglass, Nylon, Chromed brassHeight (approx.): SB 3 M: 1480 mmWeight (approx.): SB 3 M: 750 gr
