ALYX ANTENNA GUIDE RIZ TRANSMITTERS 10-100 SW

GENERAL DESCRIPTION

SW INVERTED CONE ANTENNAS RIZ 10-100 SW

These Vertically Polarised Single Tower Inverted Cone Antennas are developed in order to cover needs for simple and frequency extremely wide SW antennas, applicable in mobile and/or stationary service.

Each antenna comprises a single base insulated tower, 25m height, supporting a curtain of radiators that diverge from the top of the tower, and converge again at the bottom of the tower, and the grounding screen. The inverted cone radiator wires are electrically connected to a continuous circulating catenary.

This catenary is pulled tight from the tower by twelve insulated guys to make the antenna shape.

The tower and lower apex of the cone are connected to the upper base plate which is insulated from the ground by the base insulator. The tower and radiating cone are directly feed through the 50 ohm coaxial transmission line equipped with the proper connector, without additional matching. These antennas have an omniazimuthal radiation pattern and provide both ground wave and sky wave service over SW broadcast bands.

The Inverted Cone SW Antennas has the following advantages :

• omniazimuthal radiation pattern
  
  
• extremely wide frequency bandwidth of overall system
  
  
• stationary and mobile service
  
  
• better stability in inclement weather
  
  
• simple installation
  
  

TECHNICAL SPECIFICATIONS
MODEL	RIZ-10-SW	RIZ-20-SW	RIZ-50-SW	RIZ-100-SW
Carrier Power	10 kW	20 kW	50 kW	100 kW
Frequency	3,2 - 26,1 MHz
Polarization	Vertical
Azimuth Beamwidth	Omnidirectional within ±0.75 dB
Elevation Take-off Angle	0° for ground wave and higher TOA for sky wave
Modulation	100% AM Modulation
VSWR	2.0:1.0 maximum
Environmental	160 km per hour, wind, no ice
Mast Height	25 m
Ground Screen	60 wires, 3 mm diameter, long as mast height
Gay Anchors	Screw in type
Input Connector	50 ohm EIA
	1-5/8"	1-5/8"	3-1/8"	4-1/2"