Sirio Thunder 27 (25 - 29mhz) Groundless 10M-HAM Base Antenna

Antenna Base CB 27 MHz 1/4 wave. Designed to pass unnoticed. Very discreet. It can be placed as a balcony. Also as a provisional base installation. It is composed of an elecoidal dipole encapsulated in a PVC tube in black and with UV protection. Frequency range between 27 and 29 MHz. Bandwidth ,PL-Female connector.

Features:

Balcon or temporary installation antenna

Omnidirectional

Designed to work without Ground Plane

Factory tuned at mid-band

Electrical Data

Type: 1/4 λ helical loaded dipole

Frequency range: 25-29 MHz

System: 10M-HAM

Impedance: 50Ω

Radiation (H-plane): 360° omnidirectional

Polarization: linear vertical

Gain: 0 dBd, 2.15 dBi

Bandwidth @ SWR ≤ 2: ≥ 5000 KHz

SWR @ res. freq.: ≤ 1.5

Max. power: 100 Watts (CW) continuous 300 Watts (CW) short time

Feed system / position: Direct / Base

Connector: UHF-female

Mechanical Data

Materials: Aluminium, Steel, Nylon, Copper

Wind load / resistance: 36 N at 150 Km/h / 180 Km/h

Wind surface: 0.03 m²

Height (approx.): 960 mm

Weight (approx.): 700 gr

Mounting mast: Ø 25-32 mm

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