SteppIR Verticals are the only true ¼ wave continuous coverage antennas available for the HF bands.
The SteppIR technology has had a profound impact on improving vertical antenna performance over that of traditional designs – there is no substitute for having a true 1/4 wave vertical on every frequency within the coverage range, without having to “trick” the antenna into being resonant. Being able to adjust the length of the element allows the SteppIR vertical to be mounted nearly anywhere and still provide a good match to your transceiver. As with all ¼ wave verticals, ultimate performance depends a good radial system. SteppIR verticals can be ground mounted or elevated above ground.
without Coil with 40m Coil with 80m Coil Weight 12 lb / 5.4 kg 19lb / 8.6 kg 19lb / 8.6 kg Longest Element 18 ft / 5.49 m - - Power Rating 3kW on 20-6 m 1.5kW on 40-30m 500W on 80-30m Frequency Coverage 13.8 - 54 mHz 6.8 - 54 mHz 3.5 - 54 mHz Wind Load (EIA-222-C) 1.0 sq ft / 0.9 sq m - - Wind Rating 100 mph - - Cable Requirements 4 conductor 2x 4 conductor 2x 4 conductor Tuning Rate 1.33 ft/sec - 0.4 m/sec - -