9 el. 6m Yagi

6 meter 9 element beam Yagi (50 MHz).

Elements made with 14 and 12mm tube.

Quadruple insulated vertical guying and lateral boom guying (see pictures).

Introduction

With this large 9 element 50 MHz antenna, DXBeam wanted to meet the requirements of the most demanding DXers on the 6m "Magic Band".

The boom (13.5m long) is guyed with non-metallic tension cables (longevity>25 years) consisting of 8 "over-the-boom" cables and 4 lateral cables. It also prevents any unnecessary mechanical stress to the boom during installation.

This new DXBeam antenna has been tested during 2 years by Patrick, F2DX (DX AVENUE, manufacturer of DXBeam antennas) who could instantly compare with an existing 7 element DXBeam normally used at his station.

On-the-air tests have shown this antenna's performance to be really excellent. This is more noticeable when signals are weak or almost inaudible on the 7 element Yagi (eg. on Ascension Island beacon ZD8VHF/B).

Some photos: 9 el. 6m antenna used by F2DX

Specifications

• Forward gain in free space (dBi): 14.3

• F/B ratio (dB): 36

• Frequency coverage (MHz): 50.000 - 50.350

• Bandwidth @ 1.5 VSWR (kHz): 350

• Feed impedance (ohms): 50

• Power handling (kW): 2.5

• Longest element (m)/(ft): 2.99/9.9

• Boom length (m)/(ft): 13.53/44.4

• Turning radius (m)/(ft): 7.15/23.4

• Weight (kg)/(lb): 21/46.3

• Wind survival (km/h)/(mph): 130/80.8

• Standard Mast size (mm)/(inch): 50/2 (55/2.25 or 60/2.50 optional at no extra cost)

Greases supplied

2 kinds of grease are supplied with your antenna:

• Aluminum contact grease: Professional grease containing 30% aluminum particles, recommended for the assembly of aluminum antenna tubes. Prevents binding, corrosion and the formation of aluminum oxide, and allows easy dismantling of antennas after several years.

• Copper conductive grease: Professional conductive grease with a copper base, recommended for all hardware requiring a sound and lasting electrical contact. Prevents oxydisation, damp ingress, and limits chemical reaction between stainless steel and aluminum.

Balun or no Balun ?

• This antenna does not require any balun.

• To avoid having stray current on the braid of a coaxial cable (often the cause of RF and/or TVI/BCI), you can make your own 1:1 choke balun with coaxial cable. Explanations are provided with antenna assembly instructions. (See also our F.A.Q).