SoundBytes: Train Talk from Milepost 141

In this episode, we welcome our new Support Technician, David Kupratis, to the SoundTraxx team! We’re excited to have him on board and look forward to seeing what he brings to the position.For this week’s model show-off, George brings two MOPACAtlas U30C locomotives that he has upgraded with Blunami and finished up for his coal trains. He also discusses his collection of 45–50 ExactRail Missouri Pacific 3737 hoppers that will be a part of this coal train.Tech Tip: Learn what Dynamic Digital Exhaust (DDE)is and how to quickly set it up using the Blunami App.#SoundTraxx #SoundBytes #Blunami #ModelRailroading#ModelTrains #DCC #DynamicDigitalExhaust #DDE #AtlasTrains #MissouriPacific

George is slacking this week—he hasn’t finished a project toshow off! But he makes up for it with some special guests from the ColoradoRPM.In this episode, George talks with the Colorado RPM teamabout the upcoming show schedule, what you can expect at the event, and why you should come join us. We’re looking forward to seeing everyone and having a great time at this year’s event!#SoundTraxx #SoundBytes #ModelRailroad #ModelRailroading#ModelTrains #ColoradoRPM #RailroadHobby #DCC #ModelRailroadCommunity

George takes us along for a recent trip to Albuquerque,where he got to see the 2026 Big Steam locomotive, ride the Rail Runner, and check out a uniquely painted Santa Fe Southern Railway locomotive. He also has photos and run-by videos to share from the trip.There’s no single class that teaches you everything you needto know about model railroading, which is why SoundTraxx creates videos to help you learn and tackle decoder installations with confidence. It is important to use the right tools and materials when installing decoders, including rosin-core solder and electronics-grade flux. Never use plumber’s flux or Tix brand flux on model train electronics. We recommend Chip Quik SMD291 flux for electronics work.They also discuss an important speaker-matching tip: Makesure your speaker can handle the output of your decoder’s audio amplifier. If your decoder has a 2-watt audio amplifier, you need a speaker—or combination of speakers—capable of safely handling that power. Using a 1-watt or smallerspeaker that can't handle the amplifier’s output can damage the speaker and potentially the decoder. In some cases, multiple speakers wired in series can be used to handle the power output.And finally, we have some bittersweet news. Tom announcesthat he is leaving SoundTraxx and moving back to Illinois to return to retirement and spend more time taking care of himself. We’re going to miss having Tom here, but we’re grateful for everything he has contributed to SoundTraxx and wish him all the best in this next chapter.#SoundTraxx #ModelRailroading #ModelTrains #DCC #ModelTrainTips #DecoderInstallation #Railroading #BigSteam #RailRunner #SantaFe

George and Tom are back from the National Train Show withstories to tell! Tom shows off an Athearn Genesis Santa Fe F7, featuring a Blunami decoder and Mini Cube Speakers. Since this model will run on a DC layout, Tom also shares the custom braking rate he’s using and explains how Blunami gives you many of the benefits of DCC without requiring you to upgradeyour entire layout.The guys also talk about one of the simple but powerfulfeatures of the Blunami App: giving each locomotive a unique nickname. It’s an easy way to keep your roster organized and make it even easier to identify yourlocomotives.FAQ: Why do my LEDs work before I put the shell on, butstop working after I put it on?If your lights work during testing but stop working once thelocomotive shell is installed, the problem may not be your decoder. George and Tom explain how fragile the wires on some small LEDs can be and how easily they can break during final assembly. They also share best practices to help prevent broken wires and other installation-related problems.SoundTraxx has an extensive quality-control process beforeour decoders leave the factory, so many problems encountered during installation are not caused by the decoder. That’s why it’s important to dosome basic troubleshooting before sending a decoder in for repair—it may not actually need to be repaired!Another common installation problem is using the wrong typeof flux. Always use electronics-grade flux when soldering to a decoder. Flux designed for other applications, such as some hardware-store or brass-model fluxes, can contain acids or other chemicals that may damage decoder components and eventually cause failures.George and Tom explain why the right flux matters anddiscuss the type of flux we recommend for decoder installations, including ChipQuik SMD291.

George and Tom kick off this episode by talking about George's recent Disney vacation before looking ahead to the train shows and events where you can meet the SoundTraxx team later this summer. Tom shares his latest project—a custom-painted Athearn Genesis F7B equipped with a Tsunami2 decoder. The discussion turns to the unique role of B units, how they were used in real life, and the features that make them an interesting addition to any diesel consist. Whether you're planning to attend a train show or looking for inspiration for your next locomotive project, there's something for every model railroader in this episode.🎧 Listen now and let us know in the comments: What consists do you run on your layout?#SoundTraxx #SoundBytes #ModelRailroad #ModelRailroading #Tsunami2 #AthearnGenesis #FUnit #DCC #TrainPodcast #ModelTrains