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 3.3 03/26/2020
4 Element 20m Assembly Manual 3.2 03/26/2020
UrbanBeam Assembly Manual 1.23 04/07/2022
DB11 Assembly Manual 4.1 04/15/2020
DB18 Assembly Manual 10.5 04/15/2020
DB18E Assembly Manual 10.5 04/15/2020
DB36 Assembly Manual 10.12 04/15/2020
DB42 Assembly Manual 10.7 04/15/2020
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
80m Coil Users Manual 02/22/2008
20m Dipole Manual 2.0 04/17/2020
CrankIR Users Manual 2.1e 03/29/2022





File Revision Release Date
DB25 Control Cable Splice Connector Instructions 10/07/2020
Transceiver Interface Users Manual 5/24/2021
Connector Junction Box Users Manual 5.0 03/21/2011
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40/30m Dipole Manual [Out of Date, for Reference Only] Q 01/16/2008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 (new-style) 04/07/2022





Join the SteppIR Community for Newsletter, New Product Releases, and Specials.

Privacy Policy | Terms of Service | Disclaimer | EULA | Sitemap
Gone for Hamvention!We are out of the office for Dayton's annual Hamvention. Come see us at the booth!

Our sales and engineering team are out of the office this week for Dayton's annual Hamvention! We will be answering calls and emails remotely as best as we can and might not be getting back to you until the week of May 23rd.

Controller's are Shipping!

We now have all the parts for the electronic controllers in-house, and we anticipate rapidly catching up to our backlog. This will also have a significant effect towards reducing our lead-times for new orders.

We have had many challenges at SteppIR during these unprecedented times, and we are a very proud company as we emerge stronger than ever - we could not be in the position we are without you, our fantastic customers.

See you at Hamvention!