CAL-AV Labs, Inc.

Quality Engineering Solutions Since 1959

Voice: 520.624.1300 Fax: 520.624.1311


520.624.1300

www.cal-av.com

 

 


Specifications 2D-30A

Description

The 2D-30A is a 2-driven-element array for the 30 meter amateur band. It features full size elements, an internal phasing line, and an patented integral BALUN feed system. This beam has gain comparable to a 2-element Yagi, and a front-to-rear ratio comparable to a 3-element Yagi.


Physical Specifications

Wind Survival

The antenna is designed to reach the maximum allowable stress for the aluminum material at an actual airspeed across the elements in the worst case direction of 106 Miles Per Hour (MPH). We rate the elements to survive exposure to an airspeed of 100 MPH. This rating does not take ice loading into account.

Materials

Elements: Aluminum, 6061-T6.

Accessories: Aluminum, Steel, PVC, Acrylic

Size

Element Diameter: Elements taper from 1.875 inches to 0.375 inches

Element length: Front, 46.5 feet; Rear, 49.2 feet

Element sag: Front, 14.5 inches; Rear, 15.9 inches

Turn Radius: 25.3 feet

Weight: 54 pounds, including mounting plates and hardware


Electrical Specifications

Rated Power: 1.5KW CCS, 3KW ICAS

Feedpoint Impedance: Adjustable to exactly 50 Ohms

The VSWR bandwidth will be approximately as follows when measured at the antenna terminals. Measurements made at the transceiver end of the feedline may show wider bandwidths than these.

180 KHz For 1.4:1 VSWR
450 KHz For 2.0:1 VSWR
720 KHz For 2.6:1 VSWR


Pattern

Gain: 6.5 dBi minimum (free space), over the entire 30 Meter Amateur Band.

4.3 dBd (relative to full size dipole at same height) This number has been verified by actual measurement.

Front to back ratio: 20 dB

Takeoff angle: 28 degrees when mounted at the 46 foot recommended height. See patterns and associated notes.

Vertical Beamwidth: 33 degrees; -3dB 13 and 46 degrees when mounted at the 46 foot recommended height. See patterns and associated notes.

Horizontal Beamwidth: 74 degrees

Note: Please see patterns and graphs for more information.

Note: CAL-AV reserves the right to make and implement design improvements without notice.

Top of Page

Voice: 520.624.1300 | Fax: 520.624.1311

CAL-AV LABS, INC.
2440 N. Coyote Dr, STE 116
Tucson, AZ 85745 USA

info@cal-av.com


Antennas | Baluns | Mobile Antenna Springs
Explosive Test Site Range Instrumentation | Illuminated Warning Signs | Special Projects
Home Page | About CAL-AV | How to Order