BigIR Mark IV Vertical Antenna, 40m-6m Package



  • High Wind Kit
  • Pre-Wired Control Cable


SKU: 00417-SPS Category:


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.

  • 40m-6m continuous coverage
  • 80m-6m coverage with optional coil
  • 32 ft length
  • 15 lb total weight
  • 2 sq ft wind load
  • EIA-222-C wind rating when guyed
  • EHU high wind reinforcing and 1.5”mounting pole
  • Controller options:
  • without coil with coil
    Weight 15 lb / 6.8 kg 22lb / 9.9 kg
    Wind Load (EIA-222-C) 1.9 sq ft / 0.17 sq m -
    Longest Element 33 ft / 10.05 m -
    Power Rating 3kW 1.5kW on 80m and 60m
    Frequency Coverage 6.95 - 54 mHz 3.4 - 54 mHz
    Cable Requirements 4 conductor 2x 4 conductor
    Tuning Rate 1.33 ft/sec - 0.4 m/sec -
    Wind Rating (guyed) 70 mph w/ 1 Guy Set -
    Wind Rating (guyed) 100 mph w/ 2 Guy Sets -

Additional information

Weight 59 lbs
Select Controller Type

SDA 100, OptimizIR 2.0