HF 15m 10m 6m 3Band Antenna 15m10m6m21HD-2C 21elements

Excellent 21-element HF 15m 10m 6m 3Band Antenna 15m10m6m21HD-2C covers three upper bands 15m, 10m, and 6m. HF part 21-21.45MHz and 28-28.8MHz uses a common feed line and one connector for both bands. The VHF 50-50.5MHz antenna is on a separate connector. Nice looking HF/VHF antenna on almost 12m boom acts as three mono-band antennas. The antenna is equally good for contests, DX-ing, and for stacks. If this antenna is too big for you. See the smaller version of the antenna.

 

HF 15m 10m 6m 3Band Antenna 15m10m6m21HD-2C Appearance:

 

What does 15m10m6m21HD-2C mean?

• 15m – 15m band. Covers 21-21.45MHz frequency range with low SWR
• 10m – 10m band. Covers 28-28.8MHz
• 6m – 6m band. Covers 50-50.5MHz
• 21 – 21 elements overall
• HD – Heavy Duty Construction
• 2C – 2Connectors. One for HF and the other for VHF (6m band)

 

Electrical specifications of HF 15m 10m 6m 3Band Antenna 15m10m6m21HD-2C

15m band

Frequency range: 21 – 21.45 MHz
Free space forward Gain: 10.6 dBi
Front-to-back ratio: 26 dB
3dB Horizontal Beam-width: 51°
Nominal Input Impedance: 50 Ohm
Maximum Power Input: Up to 8 kW

10m band

Frequency range: 28 – 28.8 MHz
Free space forward Gain: 11.8 dBi
Front-to-back ratio: 28 dB
3dB Horizontal Beam-width: 48.4°
Nominal Input Impedance: 50 Ohm
Maximum Power Input: Up to 8 kW

6m band

Frequency range: 50 – 50.5 MHz
Free space forward Gain: 12.2 dBi
Front-to-back ratio: 35 dB
3dB Horizontal Beam-width: 41.9°
Nominal Input Impedance: 50 Ohm
Maximum Power Input: Up to 8 kW

 

Mechanical Specifications of HF 15m 10m 6m 3Band Antenna 15m10m6m21HD-2C

Number of Elements: 21 Full-Size Elements (6+7+8)
Elements Diameter: Tapered elements 30mm to 8 mm
Longest Element: 7.5 m
Element Mounting Position: Below the boom and above the boom
Baluns and Connectors: Included
Boom Length: 11.7 m
Boom Size: 60 x 60 mm
Turning Radius: 6.8 m
Number of Boom Pieces: 6
Guy rope support: Yes, included Stainless Steel AISI 316L rope 4 mm. 4pcs.
Mounting Mast Diameter: 43 – 70 mm 1-11/16″ – 2-3/4″ OD
Clamp: 2 x M12 Stainless Steel AISI 316L (A4)
Survival Wind Speed:150 km/h
Surface Area: 1.5 m2
Net Weight: 74 kg
Gross Weight: 81 kg
Transportation length: 2m

 

15m10m6m21HD-2C antenna 15m band azimuth radiation pattern:

 

HF 15m 10m 6m 3Band Antenna 15m10m6m21HD-2C 10m Azimuth Radiation Pattern

 

HF 3Band Antenna 15m10m6m21HD-2C 6m Azimuth Radiation Pattern

 

Antennas-Amplifiers Product Benefits. A Major advance in antenna design.

• F/B and G/T superiority.
  All antennas have been calculated using state-of-the-art full 3D EM modeling software, including the influence of the boom, bracket, baluns, and connectors. The performance of antennas designed using these techniques is exceptional, significantly outperforming those designed with the EZNEC program.
• No tuning antennas.
  Before dispatch, we assemble and test each antenna’s characteristics—no need to tune any element to get a perfect SWR on the intended frequency range. Everything is pre-tuned.
• Easy to set up.
  Everything is labeled, just put a number to a number. Everything is included in the box: Antenna, balun, bracket, and guy rope support if needed. Yours is to assemble and have fun!
• Mechanical properties.
  We believe that our antennas are the world’s strongest antennas and are mechanically constructed much better than any antennas from other manufacturers.

 

The YouTube video is here.