BigIR-Mark-IV-Manual.. - SteppIR

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Table of Contents Topic Page Table of contents 2 SteppIR - Why Compromise ? 3 SteppIR Design 4 BigIR vertical components 5 Installing the BigIR extension tube / telescoping poles 5-9 Installation of rain cap 6 Installing the element support extension tubes 7 Polyolefin heat shrink procedure 8 Securing the telescoping pole to the element support tube (EST) extension 9 Element housing unit (EHU) wiring instructions 10 Reinforcing assembly installation instructions 11—14 Installing the optional 80m Coil 15 Ground mounting of the BigIR vertical 16 Recommended radials for ground and above ground installations 17 Installing the optional 1:1 balun 18 More about choosing radial systems for ground / above-ground installations 19-23 Using a vertical in or on salt water 23 DB25 control cable splice assembly instructions 24 Control cable wiring schematic 25 SteppIR Warranty 26 2112 116TH AVE NE SUITE 1-5, BELLEVUE WA, 98004 WWW.STEPPIR.COM TEL: (425)-453-1910 FAX: (425)-462-4415 2
SteppIR - Why Compromise? The SteppIR antenna was originally conceived to solve the problem of covering the six ham bands (20m, 17m, 15m, 12m, 10m and 6m) on one tower without the performance sacrifices caused by interaction between all of the required antennas. Yagis are available that cover 20 meters through 10 meters by using interlaced elements or traps, but do so at the expense of significant performance reduction in gain and front to back ratios. With the addition of the WARC bands on 17m and 12m, the use of interlaced elements and traps has clearly been an exercise in diminishing returns. Obviously, an antenna that is precisely adjustable in length while in the air would solve the frequency problem, and in addition would have vastly improved performance over existing fixed length yagis. The ability to tune the antenna to a specific frequency, without regard for bandwidth, results in excellent gain and front to back at every frequency. The SteppIR design was made possible by the convergence of determination and high tech materials. The availability of new lightweight glass fiber composites, Teflon blended thermoplastics, high conductivity copper-beryllium and extremely reliable stepper motors has allowed the SteppIR to be a commercially feasible product. The current and future SteppIR products should produce the most potent single tower antenna systems ever seen in Amateur Radio! We thank you for using our SteppIR antenna for your ham radio endeavors. Warm Regards, Mike Mertel Michael (Mike) Mertel - K7IR President 2112 116TH AVE NE SUITE 1-5, BELLEVUE WA, 98004 WWW.STEPPIR.COM TEL: (425)-453-1910 FAX: (425)-462-4415 3
Page 1: BigIR - MK IV Vertical - Instructio
Page 5 and 6: Installing the BigIR Extension Tube
Page 7 and 8: BigIR EST Extension Tube Instructio
Page 9 and 10: Attaching the Telescoping Pole to t
Page 11 and 12: BigIR Mark IV Reinforcing Plate Ins
Page 13 and 14: Wind reinforcing kit installation i
Page 15 and 16: Wind reinforcing kit installation i
Page 17 and 18: Recommended Radials Figure 43 Groun
Page 19 and 20: All vertical monopoles need some fo
Page 21 and 22: Relative Gain Sufficient Radial Len
Page 23 and 24: Can’t get enough droop angle to a
Page 25 and 26: Wiring Diagram- DB25 Cable Splice 2
Page 27: 2112 116TH AVE NE SUITE 1-5, BELLEV

BigIR-Mark-IV-Manual.. - SteppIR

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