SABRE COMMUNICATIONS CORPORATION MODEL 610

GENERAL DESCRIPTION

HF LOG-PERIODIC ANTENNA 10.0-30.0 MHZ - MODEL 610

photo Sabre Communications Corporation Model 610

THE SABRE MODEL 610 LOG PERIODIC ANTENNA is specifically designed for the avid ham operator and also for use in HF government and commercial applications such as Maritime, Embassy, MARS, and industrial communications systems.

The Model 610 is a wide-band antenna array which operates in the 10.0 to 30.0 MHz frequency range. The antenna is well-suited for use with HF communications systems that require changes in both operating frequency and, with the addition of a rotator mechanism, in azimuth. The antenna is constructed of high strength aluminum and stainless steel hardware to ensure maximum corrosion protection in all types of environments. The antenna may be fixed in azimuth or rotated with the Sabre APA-3 Rotator System.

The Sabre Model 610 is a planar array of half wave dipole elements configured in accordance with logarithimically periodic antenna design principles. The array possesses operating characteristics of gain and impedance which remain essentially constant over a wide band of frequencies. The 610 utilizes inductive/capacitive fore-shortening techniques in the active regions at the lower operating frequencies to allow the physical shortening of the array. As a result, the gain characteristics at the lower end of the operating band are less due to loading techniques. The gain increases with frequency and remains essentially constant as the physical dimensions of the dipoles approach electrical half-wave lengths at approximately 14 MHz.

Proper dipole phasing is accomplished by feeding adjacent dipoles from opposite balanced feeders.

TECHNICAL SPECIFICATIONS
MODEL		610
Frequency Coverage		10 thru 30 MHz continuous
Polarization		Horizontal
VSWR		2.2 to 1 maximum
Forward Gain		9 dB at 10 MHz increasing to 13 dB at 14-30 MHz
Front to Back Radio		12 dB average
Input Impedance		50 ohm
Input Connector		Type "N"
Overall Length		30 feet
Turning Radius		22 feet
Net Weight		225 lbs.
Shipping Weight		300 lbs.
Wind Survival		100 MPH
Wind Area		16 sq. ft.
Construction		High-strength aluminum elements and boom with stainless steel hardware
Specifications may change without notice

AZIMUTH RADIATION PATTERNS

ELEVATION RADIATION PATTERNS

VSWR GRAPH

TAKE-OFF ANGLES AT VARIOUS HEIGHTS ABOVE GROUND AND FREQUENCIES FOR THE MODEL 610 LOG-PERIODIC ANTENNAS
Height Above Ground	Frequency 10 MHz	15 MHz	25 MHz	30 MHz
20'	90°	55°	29°	24°
40'	38°	24°	14°	12°
60'	24°	16°	9.5°	8°
100'	20°	12°	5°	3°

OPTIONAL ACCESSORIES
Rotary Joint APA-3 Rotator	Tower Support Structures - Guyed and Self-Supporting RM 2 - Roof Mount System

APA-3 ROTATOR

ERECTION