SIRIO - 827 - VERTICAL BASE ANTENNA - 5/8 WAVE - WITH RADIALS - TUNABLE FROM 26.4 TO 28.4 MHz

The Sirio 827 base antenna is one of the most respected antennas around. High performance comes as standard and the 827 will let you transmit much much further than most conventional antennas, the build quality is superb, will give many years of service, and ideal also for amateur use on the very popular 10m (28Mhz) band too.

The most modern technology and the most advanced instruments have been used for realization of SIRIO 827, the new base antenna with remarkable characteristics. I is made of Silicium Magnesium Aluminium tubes of big dimensions drawn and cemented on the surface to get the maximum strength of the main whip. 
The coil, made of enamelled copper wire of big section, has been specially planned in order to bear high powers. It adopts the exclusive system C.A.C.S. (Coil Auto-Cooling System) which allows the auto-cooling by a finned support that keeps the coil hanging up allowing the air circulation.

Features:

• Base station antenna, Omnidirectional
• High power handling capability
• Low radiation angle for excellent DX
• Equipped whit excellent multi element ground plane
• Made of aluminium alloy 6063 T-832
• Protection from static discharges DC-Ground
• Optional radials reinforcement, anti-noise NYLON RING (P/N 2511001.00)

Electrical Data

• Type: 5/8λ ground plane
• Frequency range: tunable from 26.4 to 28.4 MHz
• Impedance: 50Ω
• Radiation (H-plane): 360° omnidirectional
• Polarization: linear vertical
• Gain: 1.5 dBd, 3.65 dBi
• Bandwidth @ SWR ≤ 2: ≥ 2000 KHz
• SWR @ res. freq.: ≤ 1.1
• Max. power: 1000 Watts (CW) continuous 3000 Watts (CW) short time
• Feed system / position: Transformer DC-ground / base
• Connector: UHF-female

Mechanical Data

• Materials: Aluminium, Steel, Copper, Nylon
• Wind load / resistance: 264 N at 150 Km/h / 130 Km/h
• Wind surface: 0.23 m²
• Height (approx.): 6700 mm
• Weight (approx.): 6000 gr
• Radial length (approx.): 1400 mm
• Mounting mast: Ø 35-39 mm