Nevada Radio

SteppIR Big IR Multi-band Vertical






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Big IR MultiBand Vertical (includes SDA100 controller)

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   (80/60m with optional coil see below)
  •     32 ft length
  •     15 lb total weight
  •     2 sq ft wind load
  •     EIA 222C wind rating when guyed
  •     Comes with SDA 100 controller
  •     EHU high wind reinforcing and 1.5" mounting pole
  •     Does not include optional 80m coil

Specifications     BigIR 40-6 Vertical    

  • Weight     15 lb / 6.8 kg     12 lb / 5.4 kg
  • Wind Load     1.9 sq ft / 0.17 sq m     m
  • Longest Element     33 ft / 10.05 m    
  • Optional Coil     Yes - 80 m    
  • Power Rating     3kW (1.5kW w/80 m coil)    
  • Wind Rating     100 mph w/2 Guy Sets/h    
  • Frequency Coverage     6.8 - 54 mHz    
  • Cable Requirements     4 conductor (8 with coil)    
  • Tuning Rate     1.33 ft/sec -  0.4 m/sec    
  • Un-guyed Wind Rating     50 mph

Optional 80 / 60 metre Base Loading coil also available part number STIR-06021

retail £459.95   

Specifications Big IR 80 m coil
Ham band coverage 80m, 60m
Power rating 1500w
Dimensions 9.5?w x 14? h x 7? 
Weight 4.5 lb

More from SteppIR: All SteppIR | All SteppIR Base Antennas