Description
SY27-4: The Sirio SY 27-4 is a very strong but lightweight, high gain quality, Yagi antenna that won’t break the bank. It is well constructed and gives great performance on 26.9-27.5 MHz The SY27-4 is easily adjusted to cover up to 29MHz in the 10 metre Amateur Band. The antenna is supplied with a cutting chart giving the dimensions for the frequencies of your choice. It’s Sirio build quality, for a very happy and long life.
Features:
Sirio SY 27-4 4 / Element Yagi (Beam) Antenna
Base station antennas
Excellent construction quality
Horizontal polarization Factory tuned at 11 metre mid-band
Front to Back ratio: 20 dB
Directional. HIGH-GAIN (11 dBd / 13.15 dBi)
Horizontal polarization: Directional
Feed system / position: Gamma match / center
HIGH-POWER: Handling capability
Elements equipped with waterproof jointing sleeve
Made of aluminum alloy 6063 T-832
Grounding protection: All metal parts are DC-grounded, the inner conductor is coupled capacitively
NEW-MODEL: with extended and calibratable frequency from 26.5 to 30 MHz
Covers : 26.5 – 30 MHz ( Cutting chart supplied)
Specifications:
Type: 4-Element Yagi antenna
Frequency range: tunable from 26.5 to 30 MHz
Radiation (H-plane): directional
Polarization: linear horizontal
Gain: 11 dBd. 13.15 dBi (14dbi @ 60ft mounting)
Bandwidth @ SWR ≤ 2: ≥ 850 KHz @ 26.5 MHz
Bandwidth at V.S.W.R. 2:1: 600 KHz
SWR @ res. freq.: ≤ 1.2
Max. power: 1000 Watts (CW) continuous / 3000 Watts (CW) short time
Feed system / position: Gamma match / centre
Connector: UHF-female
Materials: Aluminum. Zamak. Zinc plated steel
Wind load / resistance: 86 N @ 150 Km/h / 120 Km/h
Wind surface: 0.07 m²
Dimensions (approx.): 5846 x 4030 x 100 mm
Boom length / diameter: 4030 mm / 33 mm
Max. element length (approx.): 5846 mm @ 26.5 MHz
Element Diameter: 8 / 12 / 16 mm
Turning radius (approx.): 3700 mm
Wind resistance: 120 Km/h
Impedance: 50Ω
Weight (approx.): 6100 gr / 13.45 lb
Mounting mast: Ø 35-50 mm
