ALYX ANTENNA GUIDE ROTATABLE LOG-PERIODIC ANTENNA FOR SHORTWAVE RADIO BROADCASTING

GENERAL DESCRIPTION

The rotatable log-periodic antenna is a broadband horizontally polarized antenna, designed for medium and long range communications.

Thanks to a rotator, any desired direction can be chosen.

The radiation pattern is generally consistent over the entire frequency range of the antenna, however the pattern can be tailored to suit requirements.

The radiating structure consists of a series of dipoles, mounted on a horizontal boom. The dipoles are fed along the center of the structure.

The supporting structure of the antenna can either be a self-supporting tower or a guyed mast.

TYPICAL RADIATION PATTERNS
Azimuth pattern	Elevation pattern

TYPICAL COVERAGE MAP

TECHNICAL SPECIFICATIONS
ELECTRICAL
Azimuth pattern	directional
Frequency ranges	2-30 / 4-30 / 6-30 MHz
Gain	5-13 dBi
Input impedance	50 ohm unbalanced or 300 ohm balanced
Polarization	horizontal
Power ratings	1 / 5 / 10 / 25 / 50 / 100 kW average
VSWR	2.5 : 1 or less
Specifications may change without notice

THIS TYPE OF ANTENNA IS AVAILABLE FROM
Manufacturer	Type number	Power Level
ASC Signal	2004	L	M
	2731	L	M
Antenna Products Corporation	LPH-1	L	M
	LPH-9/30/24		M
	LPH-27		M
	LPH-89		M
RFS Radio Frequency Systems	HLO Series		M
TCI	Model 521	L	M	H
Transradio SenderSysteme Berlin	AHL 0421			H

ABBREVIATIONS
	Abbreviation	Explanation
Power Level	L	low	1-5 kW
	M	medium	10-50 kW
	H	high	100-500 kW