6 Element OWA Yagi (Optimised Wideband Antenna) Heavy Duty – 10m

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6 Element OWA Yagi (Optimised Wideband Antenna) Heavy Duty - 10m

A 6 Element Heavy Duty OWA 'Optimised Wideband Antenna' Yagi for 10m

£900.00 — £940.00

Product Code – 10M6TORHEAVYOWA

A 6 element Yagi Antenna based on the ‘OWA’ Optimised Wideband Antenna design. For a number of years experimenters and designers (and in particular the wise words from W4RNL) have re-modelled a Yagi which give a very flat response over its operating bandwidth. The OWA design requires one additional director element to achieve the 50 Ohm feed point impedance compared to beams with feed point impedances in the 25 Ohm range. By placing this director closer towards the driven element, a flat low SWR curve is achieved at an impedance of around 50 ohms with good front to back figures. You can see form the chart the exceptionally low SWR figures. This design suits those wishing a large operating bandwidth and wider-bands such as 10 and 6m are well suited to this design. The system requires no matching device and can be connected directly to 50 ohm coax. We would however recommend including a 1 to 1 Current Balun at the feed point to prevent radiation of common-mode currents back down the feeder.

Large antennas such as this model also come complete with an additional ‘T-Bar’ horizontal strut/support. This support is used to reduce boom sag and anchors the boom in four (4) locations, 2 at the front and 2 at the rear. By using four support points (rather than two) – also reduces the sideways movement of the boom. For our guying line we use ‘Mastrant’ 4mm synthetic guy line which is rated at 400 kgs. To compliment the setup, S3i 316 Marine Grade Stainless Steel Eyebolts, Turnbuckles and Hardware finish the project. Like other antennas in the ‘Tornado’ range, this OWA is manufactured from lightweight but extremely strong construction grade 6082-T6 Aluminium stock with a heavy duty boom. The antenna includes Heavy Duty Element Brackets, Heavy Duty Polyamide Element Clamps and comes complete with M10 Stainless Steel Hardware.
The antenna is supplied with all hardware except boom to mast mount (see below).

VORTEX BOOM TO MAST PLATES
All VORTEX Antennas can be shipped WITHOUT any boom to mast mounting plates. Select this option from the drop-down menu when purchasing. Other options include the choice of mounting plates and complete mounting solutions with U-Bolts and Brackets.

See info below for mechanical and electrical details

  6 Element OWA Yagi Antenna (Heavy Duty) – 10m

Band(s):  10m (28 and 29Mhz)
Element Material:  6082-T6/*AA6082-T6
Boom Material:  6082-T6 box section aluminium
Boom Length:  10.80m
Gain:   11.48dBi (Peaking 11.65dbi at 28.715 Mhz)
Front to Back Ratio:   Better than 20db, 23.13db typical
Feed:   Coax via SO239 socket
Matching:   None – direct feed. Elements spaced for 50 ohms match
Rating:   5kw
Element Clamps:   Stauff (Germany) – heavy duty polyamide series
Antenna Weight:   34kg
Longest Element Length:   5.32m
Hardware:   304/316 stainless steel

*If available