The Sirio SY-4 is a very strong but lightweight, high gain quality, It is well constructed and gives great performance, after selecting the tuning frequency between 26.5-30 MHz.
The SY-4 is easily adjusted to cover up to 30MHz in the 10 metre Amateur Band.
With good band conditions, you can work the world with ease and put out a big signal with these high gain antennas. It's Sirio build quality too, for a very happy and long life.
Features/Specifications:
- Type: 4 elements Yagi
- Radiation: Directional
- Polarization: Linear Horizontal
- Frequencies: 26/27 MHz CB and 10 metre HAM band
- Frequency range: 26.5 to 30 MHz Tuneable (see instructions included in the photos)
- Gain: 11 dBd, 13.15 dBi
- Front to Back Ratio: 20dB
- Bandwidth @ SWR ≤ 2: 850 KHz @26.5 MHz
- SWR @ Resonant Frequency.: ≤ 1.2
- Max Power: 1000 Watts (CW) continuous, 3000 Watts (CW) short time
- Grounding protection: All metal parts are DC-grounded, the inner conductor is coupled capacitively
- Feed system / position: Gamma match / centre
- Connector: UHF-female (SO-239)
- Materials: Aluminium, Zinc Plated Steel, Nylon, Chromed Brass, EPDM Rubber, Zamak
- Elements equipped with waterproof jointing sleeve
- Dimensions (approximately): 5846 x 4030 x 100 mm
- Boom length / diameter: 4030 mm / 33 mm
- Maximum. element length (approximately): 5846 mm
- Element Diameters: 8-12-16mm
- Turning radius (approximately): 3700 mm
- Mounting type: On-Mast 35-50 mm
- Wind Load/Resistance: 85 N at 150 Km/h / 120Km/h
- Wind resistance: 120 Km/h
- Wind surface: 0.07 m²
- Weight (approximate): 6.1 kg