CAL-AV Labs, Inc.

Quality Engineering Solutions Since 1959

Voice: 520.624.1300 Fax: 520.624.1311


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Antennas

Click picture for enlargement

2D-40A at 65 feet (half wave) for
testing at the Visalia DX convention.
Tower courtesy of U. S. Towers

Click here for an explanation of just why the N7CL version of a closely-spaced 2 driven element array is so effective.

See pictures of individual and stacked CAL-AV antennas on the WX0B site.

Read the in-depth CQ-Contest article by WX0B, comparing 40M antennas.

View the NEC-2 Patterns of single 2D-40A's, a stack of two of them, and a comparison of them to a 3-element, full-size 40 meter Yagi on a 46-foot boom.


2 Element Array Antennas


2D-40A FULL-SIZE 40M BEAM - Two driven elements for 40 meters provide maximum bandwidth, and a front-to-rear ratio an S-unit better than 2-element parasitic antennas. Pattern advantage over shortened (e.g. linear-loaded) parasitics is even greater. Heavy-duty construction provides years of reliable service. Patented integral balun-hairpin feed and hardware rated at 3KW. Gain, 6.5 dBi min; Front to rear, 20 dB min; VSWR adjustable to 1:1; each over the entire band. Boom: 16 Ft. Turn radius: 36 ft. Weight: 150 lbs. Wind survival: 100 MPH no ice. Projected area: 16 SqFt.; Effective area (RS-222-C): 10.7 SqFt. Call for current pricing UPS shippable.
Specifications / EZNEC Models / Yagi-Stress Model


2D-30A FULL-SIZE 30M BEAM
- Two driven elements for 30 meters provide maximum bandwidth, and a front-to-rear ratio an S-unit better than 2-element parasitic antennas. Pattern advantage over shortened (e.g. linear-loaded) parasitics is even greater. Heavy-duty construction provides years of reliable service. Patented integral balun-hairpin feed and hardware rated at 3KW. Gain, 6.5 dBi min; Front to rear, 20 dB min; VSWR, 1.5:1 max; each over the entire band. Boom: 12 Ft. Turn radius: 26 ft. Weight: 54 lbs. Wind survival: 100 MPH no ice. Projected area: 8.4 SqFt.; Effective area (RS-222-C): 5.6 SqFt. Call for current pricing UPS shippable.
Specifications / EZNEC Models / Yagi-Stress Model

Click picture for enlargement
2D-30 30M Antenna
2D-30A at 46 ft. ( half wave) for testing.
Guys are Phyllistran.


2D-30A under a 3-element 17M Yagi at EA5GNI


2D-20A FULL-SIZE 20M BEAM
- Two driven elements for 20 meters provide maximum bandwidth, and a front-to-rear ratio an S-unit better than 2-element parasitic antennas. Pattern advantage over shortened (e.g. linear-loaded) parasitics is even greater. Heavy-duty construction provides years of reliable service. Patented integral balun-hairpin feed and hardware rated at 3KW. Gain, 6.5 dBi min; Front to rear, 20 dB min; VSWR, 1.5:1 max; each over the entire band. Boom: 8.5 Ft. Turn radius: 18.5 ft. Weight: 38.5 lbs. Wind survival: 100 MPH no ice. Projected area: 4.7 SqFt.; Effective area (RS-222-C): 3.1 SqFt. Call for current pricing UPS shippable.
Specifications / EZNEC Models / Yagi-Stress Model


2D-17A FULL-SIZE 17M BEAM
- Two driven elements for 17 meters provide maximum bandwidth, and a front-to-rear ratio an S-unit better than 2-element parasitic antennas. Pattern advantage over shortened (e.g. linear-loaded) parasitics is even greater. Heavy-duty construction provides years of reliable service. Patented integral balun-hairpin feed and hardware rated at 3KW. Gain, 6.5 dBi min; Front to rear, 20 dB min; VSWR, 1.5:1 max; each over the entire band. Boom: 6.0 Ft. Turn radius: 13.75 ft. Weight: 18.5 lbs. Wind survival: 100 MPH no ice. Projected area: 2.8 SqFt.; Effective area (RS-222-C): 1.9 SqFt. Call for current pricing UPS shippable.
Specifications / EZNEC Models / Yagi-Stress Model


Rotatable Dipole Antennas


DIP-40A 40M FULL-SIZE ROTATABLE DIPOLE
- Rotary dipole antenna for 40 meters is easily mounted within a stack, parallel to other booms to add 30 meters with minimum interaction. Heavy-duty construction and mounting. EB-1 balun feed, rated at 3KW. Turn radius 36.8 Ft.; Weight, 63 lbs.; Wind survival, 100MPH, no ice; Projected area: 11.5 SqFt. Effective area (RS-222-C), 7.7 SqFt. Call for current pricing UPS shippable. Specifications


DIP-30A 30M FULL-SIZE ROTATABLE DIPOLE
- Rotary dipole antenna for 30 meters is easily mounted within a stack, parallel to other booms to add 30 meters with minimum interaction. Heavy-duty construction and mounting. EB-1 balun feed, rated at 3KW. Turn radius 26 Ft.; Weight, 22 lbs.; Wind survival, 100MPH, no ice; Projected area: 4.6 SqFt. Effective area (RS-222-C), 3.1 SqFt. Call for current pricing UPS shippable. Specifications


DIP-20A 20M FULL-SIZE ROTATABLE DIPOLE
- Rotary dipole antenna for 20 meters is easily mounted within a stack, parallel to other booms to add 20 meters with minimum interaction. Heavy-duty construction and mounting. EB-1 balun feed, rated at 3KW. Turn radius 18 Ft.; Weight, 12.5 lbs.; Wind survival, 100 MPH, no ice; Projected area: 2.5 SqFt. Effective area (RS-222-C), 1.6 SqFt. Call for current pricing UPS shippable. Specifications


DIP-17A 17M FULL-SIZE ROTATABLE DIPOLE
- Contact the CAL-AV factory.


Self Supporting Vertical Antennas

VSS-40A Full Size Wave - Check with factory.

VSS-30A Full Size Wave- Check with factory.

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

info@cal-av.com


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