The 2 Element Yagi has the highest value-to-performance of any of our antennas and is the antenna of choice for DX-peditions.
The SteppIR 2 element 20m-6m Yagi with 40/30 loop covers 8 ham bands (40m, 30m, 20m, 17m, 15m, 12m, 10m, 6m) and every frequency in between. This model takes our standard 20m-6m Yagi and replaces the 36 foot (10.98m) straight element with a 39 foot (11.89m) looped driven element. Our patented folded loop elements allow for an element to be 40% shorter in overall length while giving up just 0.3dB of gain performance when compared to a full-length dipole. Instead of a dipole length of 65 feet (19.8m), the length is 39 feet (11.89m). When the antenna is a dipole on 40m and 30m, the passive element is retracted so that there is zero potential for interaction between the 2 elements. In addition, the longer-length driven element has minimal effect on the turning radius and adds just 3.63 square feet (0.34 sq m) to the projected area. The 40/30 loop functions as a dipole continuously from 6.90 Mhz to 13.2 Mhz and as a 2 element Yagi from 13.3 Mhz-54 Mhz.
Weight 37lb/16.8kg *Projected Area 10.9 sq ft / 1.01 sq m Longest Element 39ft/11.9 m Turning Radius 20ft/6.09 m Boom Length 57in/1.45 m Mast Hardware 2.0in/5.08 cm Power Rating 3KW Wind Rating 100 mph / 160 km/h Frequency Coverage 6.8 mHz—54 mHz Cable Requirements 12 conductor 22 ga shielded Tuning Rate 1.33 ft/sec - 0.4 m/sec
Band dBi Gain DB F/R 40 m 1.8* N/A 30 m 2.1* N/A 20 m 6.6 21 17 m 6.6 16 15 m 6.5 13 12 m 6.4 11 10 m 6.2 9 6 m 5.0 (8.3)** 2 (20)**
* with 40/30 dipole ** with 6m passive element kit
Part number: 00242-SPS
*Projected area is the total perpendicular surface area measured in square feet/square meters, that is exposed to wind. To calculate wind load you always take the largest projected area whether that is from the perspective perpendicular to the boom or perpendicular to the elements. In the case of SteppIR Yagi’s, the maximum projected area will always be the sum of the surface area’s perpendicular to the Yagi elements. This calculation is a constant number and will not change regardless of EIA specification changes. Do not mistake this projected area calculation as anything more than a datapoint to present to your structural engineer, tower manufacturer or rotator manufacturer so that they can determine what is necessary for your application.
When sizing an antenna to a tower, many factors need to be taken into consideration including, but not limited to: projected area of antenna in square feet or square meters, weight of the antenna and other items on tower, turning radius, element lengths, antenna height, location exposure category, locations three-second gust wind-speed, locations maximum radial ice loading.
Improper specification of an antenna or rotator to a tower can result in product failure, injury or death. SteppIR is not an expert on tower or rotator sizing and for this reason will never make any kind of a recommendation – this specification process is meant for industry professionals such as a structural engineer, tower manufacturer or rotator manufacturer. Please do not attempt to self-specify our products – the information provided by SteppIR is to be utilized by industry professionals only.