The most potent single tower antenna systems ever seen in Amateur Radio

All The Files You Need

Find below the files related to all of our products below. And, as always, please sign up for our newsletter to ensure you get the latest and great information from SteppIR.



File Version Release Date Release Notes
SDA 100 Firmware Upgrade Package – MUSTANG 63 11/20/18 Release Notes
SDA 2000 Firmware Upgrade Package 118 8/26/20 Release Notes



Yagi Antennas

File Revision Release Date
2 Element 20m Assembly Manual 3.1 03/26/2020
3 Element 20m Assembly Manual 3.5 07/18/2022
4 Element 20m Assembly Manual 3.2 03/26/2020
UrbanBeam Assembly Manual 1.24 08/12/2022
DB11 Assembly Manual 4.1 04/15/2020
DB18 Assembly Manual 10.6 07/18/2022
DB18E Assembly Manual 10.7 08/01/2022
DB36 Assembly Manual 10.13 07/18/2022
DB42 Assembly Manual 10.8 07/18/2022
MonstIR Assembly Manual [Discontinued] 08/08/2008


Verticals and Dipoles

File Revision Release Date
SmallIR Users Manual 2.1 04/15/2020
BigIR Mark IV Users Manual 5.1.2 01/28/2022
20m Dipole Manual 2.0 04/17/2020
CrankIR Users Manual 2.1e 03/29/2022





File Revision Release Date
40/30 Loop Installation Instructions [NEW STYLE] 09/28/2022
DB25 Control Cable Splice Connector Instructions 10/07/2020
Transceiver Interface Users Manual 05/24/2021
Transceiver Interface Cable Selection Guide 10/31/2022
Connector Junction Box Users Manual 6.0 06/10/2022
Remote Driver Board Installation Instructions 03/21/2011
Wireless Remote Driver Board Users Manual 1.0 05/24/2019
Control cable surge suppressor Users Manual
High Wind Kit for 2 and 3 element antennas 2.0 09/11/2011
Truss kit Option – All antennas 2.0 06/02/2012
SARK-110 Vector Impedance Antenna Analyzer v1.2 1.2.8 01/10/2016
DB42 80m Dipole Option Manual 01/10/2011
DB36 80m Dipole Option Manual 3.0 02/05/2009
40/30m Dipole Manual [Out of Date, for Reference Only] Q 01/16/2008
Diverter Cone assembly procedure 2.0 07/30/2009
40/30 Loop Installation Instructions [Out of Date, for Reference Only] 04/07/2022





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Closed for Veterans day!11/11/22

SteppIR Communication Systems will be closed 11/11/22 for Veterans day and will be re-opening 11/14/22, normal business hours. You can order products 24/7 on our website or if you wish to speak with us, we will look forward to chatting next week.

Thank you to all who served, we are grateful for your dedication to our country.