HF 3-Band antenna 3B-222 for 20 m, 15 m and 10 m band that covers also 11 m CB radio.
3B-222: antennas-amplifiers.com/produ...
Perfect optimized Tri-bander with excellent performance. Covers all three main upper bands. 20 m, 15 m 10 m as well as 11 m all channels. Full range. Uses a common feed line. One cable for all bands.
3-Band antenna uses 2 active elements on lower frequencies and 2+1 elements on 27 - 28 MHz
Perfect optimized Tri-bander with full coverage:
20 m band: 14 MHz - 14.35 MHz
15 m band: 21 MHz - 21.45 MHz
10 m band: 28 MHz - 29.3 MHz
CB Band:
Australia: 27.055 MHz to 27.355 MHz or channels 8-35
Marine radio: 27.68 MHz to 27.98 MHz or channels 68-98
Standard: 26.965 - 27.405 MHz or channels 1-40
Wide coverage: 26.965 - 27.855 MHz or channels 1-80
Electrical specifications:
Frequency range: 14 - 14.35 MHz, 21-21.45 MHz, 26.9-27.98 MHz + 28 - 29.3 MHz.
Free Space Forward Gain: 5.3 dBi (20 m), 5.2 dBi (15 m), 7.3 dBi (10 m + 11 m)
Front to Back Ratio: 11 dB (20 m), 11 dB (15 m), 27 dB (10 m + 11 m)
3 dB Horizontal Beam-width: 68° (20 m), 68° (15 m), 62° (10 m + 11 m)
SWR Across Entire Band is better than: 1.3 (20 m), 1.5 (15 m), 1.3 (10 m + 11 m)
Polarization: Horizontal
Nominal Input Impedance: 50 Ohms
Maximum Power Input: More than 1.5 kW (up to 10 kW versions)
Matching Method: Direct feed through Teflon cable current balun. Common mode impedance more than 1 kOhm
Common Connector: SO239 Teflon Silver plated ("N" or 7/16 DIN optional)
Mechanical specifications:
Number of Elements: 2, 2, 2+1 (6 elements)
Elements Diameter: Tapered elements from 35 mm to 8mm
Longest Element: 12 m
Element Mounting Position: Below the Boom
Boom Length: 3 m
Boom Size: 60 x 60 mm
Number of Boom Pieces: 2
Guy rope support: Yes, Included. Stainless Steel rope 4 mm
Balun and Connector: Included
Mounting Mast Diameter: 40 - 70 mm 1-1/4" - 2-3/4"
Clamp: M10 Stainless Steel
Turning radius: 6.5 m
Antenna Survival Wind Speed: 150 km/h
Net Weight: 36 kg
Gross Weight: 39 kg
Transportation Length: 1.5 m
Rugged construction. Strong boom (60 x 60 mm) and and sturdy initial diameters of elements ensure high resistance to high wind and snow.
20 m starting element diameter 35 mm.
15 m and 11-10 m starting diameter of elements 25 mm.
Common feed line with 1500 W balun for legal limit power on tri-bander Yagi 3B-222.
Chapters:
0:00 Introduction to 3B-222
0:27 Testing Ham Radio antenna on 20 m, 15 m, 11 m and 10 m.
1:58 Fact about HF antennas and 3B-222
2:28 Electrical and Mechanical specifications and Radiation Patterns
2:40 3B-222 antenna showcase.
Link to all HF antennas: antennas-amplifiers.com/produ...
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Thank you for watching.
Goran YU1CF, Dusan YU2AAD
Негізгі бет Tri-band 6 element HF Upper Bands and CB Radio Yagi Antenna 3B-222
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