SteppIR YAGI URBAN BEAM User manual

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Page 1
REV 1.24
8/12/2022
13406 SE 32nd Street, Bellevue, WA 98005 l Tel: [phone] l email: [email protected]m
This assembly manual is intended to be
printed in full COLOR. If the manual is
printed in black and white, many im-
portant details could be lost.
ASSEMBLY MANUAL

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Specifications UrbanBeam Yagi
Boom length 4.0 ft / 1.22 m
Boom outside diameter 1.75 in / 4.45 cm
Longest element 30.5 ft / 9.3 m
Turning radius 15.5 ft / 4.72 m
Weight 45 lb / 20.5 kg
Wind load - EIA-222-F/G 7.9 ft2 / 0.73 m2
Wind load - EIA-222-C4.4 ft2 / 0.41 m2
Wind rating 100 mph
Adjustable elements 2
Power Rating 3000 watts continuous
Feed points 1
Frequency coverage 6.8 MHz—54 MHz
Control cable 12 conductor shielded, 22AWG
Frequency Gain
dBi
Front to
Back
dB
Front to
Rear
dB
40M 1.619.55 (F/S)
30M 1.7729.63 (F/S)
20M 6.50 16.5 12.0
17M 6.6 21 12.6
15M 6.6 24.6 14.0
12M 6.7 18.5 15.7
10M 6.65 14.8 14.8
6M 6.15 4.0 4.0
UrbanBeam Yagi Specifications
PREAMBLE
1 A full size dipole is referenced at 2.1dBi
2 Measured SWR is 2.3:1 for this model on 30m

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TABLE OF CONTENTS Page(s)
Preamble 2-19
Antenna specifications 2
YouTube Assembly Instructions by Pascal Villenueve, VA2PV 5
Urban Beam Drawing 6
OK, NOW WHAT?? Advice from Jim Streible K4DLI (SK) 7-8
Parts Checklist 9-10
Assembly Kits—Bill of Materials 11-12
Assembly Notes (Read before you start assembly) 13
A Word About Stainless Steel and the Potential for Galling 14
Antenna Overview 15
Section 1 — Boom / Mast Plate Assembly 16-25
Overview 16
EHU Mounting Locations 17
EHU Placement 18
EHU Overview 19
EHU Wiring 20-21
Director EHU Drawing 22
Attaching Director Mounting Plate & EHU to Boom 23
Driven EHU Drawing 24
Attaching Driven Mounting Plate & EHU to Boom 25
Section 2 — Mounting the Boom to the Mast Plate 25-28
Mast Plate-to-Boom Overview Drawing 26
Attaching Boom to Mast Plate 27
Wiring the Connector Junction Box 28
Mounting the Connector Junction Box 29
Section 3 — Boom Wiring & Initial Testing 29-31
Wiring the 25pin Dsub 30
Wiring Test 31

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URBANBEAM TABLE OF CONTENTS (Continued) Page(s)
Section 4 — Preparing Telescoping Poles and Loop Tubes 32-38
Preparing the Telescoping Poles & Insertion into the Sweep Tubes 32-33
Sizing the Pole Tip Remnants for Loop Tubes 34
Attaching Sweep Couplers to Sweep Tubes 35
Connecting the Metal Loop Strut to the Sweep Couplers 36
Joining the Loop Halves Together 37
Preparing the CPVC inner-guide tube & diverter cone 38
Section 5 — Final Assembly 39-42
Securing the element tubes to the EHU 39-40
Mounting the UrbanBeam to the Tower Mast 41
Last Steps 42
Section 6 — Troubleshooting 43-44
Troubleshooting tips 43-44
Section 7 — Miscellaneous 45-46
Warranty 45
Contact Information 46

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Pascal Villeneuve, VA2PV has done an excellent series on
YouTube showing the unboxing and assembly of the Urban
Beam Yagi antenna. While there has been some design changes
it is still beneficial to watch these to get a good idea of how to
build the antenna. He also did a comprehensive review of the
product including the OptimizIR controller. Below are links
that we HIGHLY recommend you review thoroughly before
unboxing and assembling your Urban Beam Yagi:
Unboxing: https://www.youtube.com/watch?v=4KlkyR3S9v8
Assembly: https://www.youtube.com/watch?v=HKLnPsXhUYE
Review: https://www.youtube.com/watch?v=InKqrViwrxk
If typing these links in are laborious, simply go to www.youtube.com and then
type in Pascal Villeneuve, Urban Beam, and the three links will appear.
Special thanks to Pascal Villeneuve VA2PV for the time he spent making these in-
credible 4K HD Videos!