SteppIR Option 6m for 3 El.

incl. VAT, plus shipping €108.40

In stock, shipped in 1 to 2 days


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  • SteppIR option 6m with mounting material
  • Quick guide EN
SteppIR manufactures freely tuneable multiband beams with 2, 3 or 4 elements for 40 to 6m or 20 to 6m. With the continous mechanical tuning of the element lengths SteppIR Yagis achieve the performance of comparable monoband beams - but on many bands. The similar contructed λ/4 verticals offer always perfect match as tuned groundplane. The small packing size and the lightweight construction with glassfibre tubes makes these antennas an ideal companion for dx-peditions and fielddays.

The problem with traditional beams

Traditional multiband beams require traps, interlaced elements etc. to work on multiple bands. With these elements such an antenna is usually a compromise in respect to the possible maximum efficiency of an antenna. Monoband beams like the ZX Yagis would be an alternative, but who can put up three or more such beams?

The idea: variable lengths elements

FluidMotion, the manufacturer of SteppIR antennas has solved this problem in an elegant way. SteppIR vary the mechanical length of each element by means of a retractable metal band. This allows the antenna to be adjusted for any frequency (within the range) and work near the perfect optimum.

Contruction of a SteppIR

Each element of a SteppIR antenna consists of lightweight glassfibre tubes, the metallicc band run in these tubes. That means of course that the absolute size of the antennas does not change, the glasfibre tubes are not changed in length. The metallic bands are made of a special Copper Beryllium (CuBe) which withstands millions of movements. The excellent electrical contact is achieved with four self cleaning slider contacts for each element. The metal band itself is perforated, a sprocket wheel spools up the band. The sprocket is driven by a precision stepper motor, allowing for very precise positioning.


Each single element is controlled by a 4 wire cable, i.e. the 4-element SteppIR yagi requires 16 wires. Down in the shack a supplied controller is used to adjust the antenna. For the amateur bands various presets are available for each band. Further a "general" mode allows adjustment of the antenna to any frequency (within the specified range). Antenna setups can be stored for later recall, other functions allow the quick reversal of direction or the bi-directional mode where the gain is evenly distributed in two directions. An optional CAT interface for the controller allows direct control from most amateur rigs: the antenna is continously adjusted when the frequency on the rig is changed.

Optional 30/40m Radiator
This replaces the standard radiator and allows operation down to 40m. Available in two version: one as option when buying a new antenna and one as replacement part for an existing antenna.

Technical data and comparison table
According to the manufacturer operation on 30m may require a tuner.
Technical Data
Product Name 12100.63
Brand SteppIR
Wind Surface (m²) 0,57
Weight 616 g
Max. Mast Diameter [mm] 53 mm
Max. Windspeed (km/h) 160.0000
SteppIR Option 6m for 3 El.
SteppIR Option 6m for 3 El.

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incl. VAT, plus shipping €108.40

In stock, shipped in 1 to 2 days

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