stepp-SmallIR 20m - 6m Vertical

Quick Overview

SmallIR 20m - 6m Vertical with SDA100 Controller
Excl. Tax: £833.29 Incl. Tax: £999.95


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.


Specs BigIR SmallIR
Element Length 33 ft / 10.05 m 18 ft / 5.49 m
Minimum suggested radials
(for ground installations)
12 12
Weight 15 lb / 6.8 kg 12 lb / 5.4 kg
Wind Load
2 sq ft / 0.19 sq m 1 sq ft / 0.9 sq m
Wind Rating

0 guys: 50mph / 80kmh
1 guy: 70mph / 112kmh
2 guys: 100mph / 160kmh

100mph / 160 kmh
Adjustable Elements 1 1
Power Rating
3 KW 3 KW
Frequency coverage 6.9 – 54 MHz 13.9 – 54 MHz
Tuning Rate 0.7 ft per second 0.7 ft per second
Control Cable 4 wire 22 AWG shielded 4 wire 22 AWG shielded



Specs BigIR 80m coil SmallIR 80m coil SmallIR 40m coil
Ham band coverage 80m, 60m 80m, 60m, 40m, 30m 40m, 30m
Power rating 1500w 500w 1500w
Dimensions 9.5″w x 14″ h x 7″ deep 9.5″w x 14″ h x 7″ deep  9.5″w x 14″ h x 7″ deep
Weight  4.5 lb 4.5 lb  4.5 lb
Cable requirement
4 wire
22 awg shielded
4 wire
22 awg shielded
4 wire
22 awg shielded



Additional Information

manufacturer SteppIR

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