HF Triband Super Yagi Antenna 3B-345HD

  • HF Triband Super Yagi Antenna 3B-345HD

High performance 3-Band Super Yagi Antenna 3B-345HD

Tri-Band antenna 12 elements with central wide spaced elements that can fit in antenna towers up to 1m wide. Specially designed for rotary towers and for antenna stacks.

HF-Tri-band-antenna-3B-345HD

HF 3-Band Super Yagi antenna 3B-345HD can fit in the middle of rotary towers or on the top. Ideal for Triband stack.
Antenna uses common feed line. Input power limited by feed line only. Very low SWR, excellent F/B. Wind survival speed 170 km/h.
Electrical Specifications
Frequency Range: 14.0 - 14.35 MHz 21.0 - 21.45 MHz 28.0 - 29 MHz
Free Space Forward Gain: 7.3 dBi 9.1 dBi 10.1 dBi
Front to Back Ratio: 25 dB 20 dB 22 dB
3 dB Horizontal Beamwidth: 64° 60° 52°
Number of active elements per band: 3 4 5
VSWR 1.3 - 1.15 - 1.35 1.1 - 1.05 - 1.15 1.1 - 1.0 - 1.5
Maximum Power Input: More than 1.5 KW More than 1.5 KW More than 1.5 KW
Matching Method: Direct feed through current balun. One cable for all three bands.
Connector: SO239
Mechanical Specifications
Boom length: 8 m
Boom: 80 x 80 mm
Longest element: 11.6 m
No. of elements: 12
Turning radius: 7.1 m
Surface Area: 1.45 m2
Mounting Mast Diameter: 43 - 70 mm
Survival Wind Speed: 170 km/h 
Weight: 75 kg

Two antenna stack:

Electrical Specifications Stack characteristics
14 MHz 21 MHz 28 MHz
Frequency Range: 14.0 - 14.35 MHz 21.0 - 21.45 MHz 28.0 - 29 MHz
Free Space Forward Gain: 10.32 dBi 12.14 dBi 13.26 dBi
Front to Back Ratio: 19 dB 18 dB 19 dB
3 dB Vertical Beamwidth: 52° 36° 27°
Spacing between antennas: 10-12m Above results are for 11 m Stacking distance
14 MHz starting diameter of elements 35 mm.
21 MHz starting diameter of elements 25 mm.
28 MHz starting diameter of elements 25 mm.
Strong and sturdy initial diameters ensure high resistance to high wind and snow. 
Rugged construction will enable long-life operation in all weather condition.


  • Product Code: 3030
  • Availability: In Stock
  • 1,190.00€


Tags: 3-band, 3B-345HD, Stack, Super Yagi, Triband, Stack, Antenna