6 element 27MHz OP-DES Yagi (8.4m)

Manufacturer: InnovAntennas
Product Code: 27-DES-6

Product Dimensions and Weight

Product Length: 7.1950M
Product Width: 5.2600M
Sales price £699.95
gross price
Sales price without tax £583.29
Sales price without tax£583.29
Tax amount £116.66
Total Tax: £116.66


altA 6 element wideband 27-27.8MHz OP-DES (Opposing Phase Driven Element System) Yagi

The OP-DES is the newest in patent technology produced by InnovAntennas and is specifically designed for maximum performance, wide-band HF applications. Read more about the OP-DES Yagi Here. InnovAntennas use the latest in Electromagnetic Design Technology to ensure the very best results and the OP-DES Yagi is proof of that!

The OP-DES provides a near-perfect 50 Ohm impedance over a very wide range without the requirement of 'lossy' and pattern impacting matching devices.

The OP-DES offers incredible wide-band performance with a flat SWR from 27-28MHz.

No matching devices, coils or traps so ALL your power gets to the antenna and radiated!!



Gain: 10.67dBi @ 27.300MHz

F/B: 29.91dB @ 27.300MHz

Peak Gain: 10.75dBi

Gain at 15m above Ground: 16.04dBi

Peak F/B: 30.34dB

Power Rating: 10kw

SWR: Below 1.1:1 from 27.000MHz to 27.800MHz  (Can be adjusted from 26MHz to 28MHz to suite users preference)


Stacking Distance: 5.5-9.5m ( 8m recommended)

2 Stacked Gain @ 8m spacing: 13.36dBi

2 Stacked F/B: 33.97dB

2 Stacked Gain @ 8m Spacing 15m above ground: 18.44dBi

Boom Length: 8.4m

Weight: 14.98Kg / 33LB

Turning Radius: 4.904m / 16.06ft

Wind Loading: 0.24 Square Metres / 2.60 Square feet

Wind Survival: 160KPH / 100MPH  (125PMH version available upon request)

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



This antenna is made 5/8 inch (15.88mm) center elements and 1/2 inch (12.7mm) outer elements with the OP-DES end sections 3/8 inch (9.525mm). The antenna has fully insulated elements which will ensure continuous, high performance for many years to come. Boom to mast brackets are included with all antennas which will support 2 inch (50mm) masts.  Boom is 1.5 inch square 16SWG aluminum.


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! Even a digital caliper is used (with an accuracy of .01mm) to measure the elements during production to ensure they are within 0.2mm of what they should be, this ensures they work as well as our software model predicts.

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

  • Marine grade Stainless Steel Fittings
  • Original Stauff Insulation clamps
  • Mill finished boom and elements for highest levels of accuracy



Azimuth Plot



Elevation Plot



Single 6 element OP-DES up 15m above ground



2 x 6el OP-DES Yagi 8m apart with the bottom antenna 15m above ground






A 6el 27MHz OP-DES installed in Norway


Manufactured the right way, not the cheapest way! 

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