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.<\/p>\n
Features:
\nSirio SY 27-4 4 \/ Element Yagi (Beam) Antenna
\nBase station antennas
\nExcellent construction quality
\nHorizontal polarization Factory tuned at 11 metre mid-band
\nFront to Back ratio: 20 dB
\nDirectional. HIGH-GAIN (11 dBd \/ 13.15 dBi)
\nHorizontal polarization: Directional
\nFeed system \/ position: Gamma match \/ center
\nHIGH-POWER: Handling capability
\nElements equipped with waterproof jointing sleeve
\nMade of aluminum alloy 6063 T-832
\nGrounding protection: All metal parts are DC-grounded, the inner conductor is coupled capacitively
\nNEW-MODEL: with extended and calibratable frequency from 26.5 to 30 MHz
\nCovers : 26.5 – 30 MHz ( Cutting chart supplied)<\/p>\n
Specifications:
\nType: 4-Element Yagi antenna
\nFrequency range: tunable from 26.5 to 30 MHz
\nRadiation (H-plane): directional
\nPolarization: linear horizontal
\nGain: 11 dBd. 13.15 dBi (14dbi @ 60ft mounting)
\nBandwidth @ SWR \u2264 2: \u2265 850 KHz @ 26.5 MHz
\nBandwidth at V.S.W.R. 2:1: 600 KHz
\nSWR @ res. freq.: \u2264 1.2
\nMax. power: 1000 Watts (CW) continuous \/ 3000 Watts (CW) short time
\nFeed system \/ position: Gamma match \/ centre
\nConnector: UHF-female
\nMaterials: Aluminum. Zamak. Zinc plated steel
\nWind load \/ resistance: 86 N @ 150 Km\/h \/ 120 Km\/h
\nWind surface: 0.07 m\u00b2
\nDimensions (approx.): 5846 x 4030 x 100 mm
\nBoom length \/ diameter: 4030 mm \/ 33 mm
\nMax. element length (approx.): 5846 mm @ 26.5 MHz
\nElement Diameter: 8 \/ 12 \/ 16 mm
\nTurning radius (approx.): 3700 mm
\nWind resistance: 120 Km\/h
\nImpedance: 50\u03a9
\nWeight (approx.): 6100 gr \/ 13.45 lb
\nMounting mast: \u00d8 35-50 mm<\/p>\n","protected":false},"excerpt":{"rendered":"
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