HF multi band Yagi - XR4 - 8 element 4 band by Force12

HF multi band Yagi - XR4 - 8 element 4 band by Force12
RRP: £ 845.75
£845.75 (Inc. VAT 20.00%)
Ex-VAT Price : £704.79
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An 8 element 4 band HF & 6m Yagi (20/15/10/6) with 3.5m boom
 

The Force12 XR4 - An 8 element multi-Band HF & 6m Super-compact Yagi covering 20m/15m/10m/6m bands with a singlefeed point

The XR4 was inspired by the C3 Force12 tribander. However, the XR4 has been given the 6m band in addition to the traditional HF 3 bands of 20/15/10. Furthermore it is much smaller than the C3, comes with a capacity loaded 20m element version (XR4C) which reduces the longest element from 11.6m to 8.9m) and reduced turning radius too! The XR4 is set to become a market-leader very quickly. Why not get ahead of the pack with this one and get your order in early!

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The full sized XR4 installed at the InnovAntennas Europe factory

 

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The XR4C (Compact) installed at M0PSD

 

Performance

20m Band

Gain: 6.1dBi

F/B: 10.6dB

SWR coverage: Better than 1.5:1 from 14-14.35Mhz without an ATU or re-tuning

2 active elements

 

15m Band

Gain: 6.2dBi

F/B: 12.68dB

SWR coverage: Better than 1.9:1 from 21-21.45Mhz without an ATU or re-tuning 1.5:1 coverage 300Khz

2 active elements

 

10m Band

Gain: 6.78dBi

F/B: 22.27dB

SWR coverage: Better than 1.5:1 from 28-28.55Mhz without an ATU or re-tuning 1.9:1 SWR up to 28.7Mhz

2+ active elements

 

6m Band

Gain: 7.55dBi

F/B: 25.27dB

SWR coverage: Better than 1.2:1 from 50-50.3Mhz without an ATU or re-tuning

2+ active elements

 

Power Rating: 5kw

Boom Length: 3.5 Metres

Weight: 24.6Kg

Turning Radius: 5.98 Metres

Wind Loading: 0.9 Square Metres

Wind Survival: up to 201KPH / 125MPH 

Other options available if higher wind loading/survival is required.

Stacking Distance: 7 - 12m ( 11m recommended)

 Specification

The boom is made from 45mm diameter square tube with a wall thickness of 3.2mm and thus is super-rigid. The largest diameter elements are the 20m elements which are 32mm diameter in the centre (with 3.2mm wall) tapering quickly to 9.5mm. Marine grade stainless steel is used throughout our antennas, no guying or boom truss is needed with this antenna.

Our antennas are constructed with the best quality materials in order that the best mechanical construction can be achieved, not the cheapest and most profitable!

Note: Much development time has gone into our antennas, not just on basic electromagnetic design, we are able to model the effect of insulators, booms and other objects to ensure the make up of our antennas have least effect on performance and pattern degradation. More information can be found here

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An XR4 prototype part-constructed. Note the elevated 10m elements, one of the secrets of this super-compact multi-band Yagi

 

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A Cross-section of the driven elements on the XR4 installed with 'high-power' phasing lines

 

  • Marine grade Stainless Steel Fittings*
  • Original Stauff Insulation clamps
  • Mill finished boom and elements for highest levels of accuracy
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20m azimuth plot when placed 20m above ground. Note 11.36dBi including ground gain

 

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15m azimuth plot when placed 20m above ground. Note 11.68dBi including ground gain

 

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10m azimuth plot when placed 20m above ground. Note 12.35dBi including ground gain

 

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6m azimuth plot when placed 20m above ground. Note 13.39dBi including ground gain

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