Product Support for: Throttles -> Duplex Radio Equipped Utility Throttle with 4 Digit Addressing (UT4D)

  Digitrax UT4D Throttle Operating Instructions by Dan Bourque   v1.0 Selecting a locomotive or consist 1.         Dial the 4-digit locomotive address into the “LOCO ADDRESS” dials             - For a consist, the address will normally be the lead locomotive             - For a 3-digit locomotive number, use “0” for the first digit 2.         Press the “SEL” key, the ST light on the throttle should flash green 3.         Move the direction selector on the throttle to either “R” or “F” 4.         Move the speed knob until train moves 5.         For headlight, press the “F0” key (“F3” will ...

  As of 2017, UT4 throttles can only be converted to duplex.  Digitrax discontinued simplex radio upgrades due to lack of parts. This radio retrofit must be done at the Digitrax factory because of FCC rules. Please complete the form in the warranty section of the website and send it in with your throttle.  Be aware the long cord will be cut off to 12", no exceptions.

Clarifications of UR93 and DT602D/UT6D Duplex RF and network performance: The new UR93 and DT602D and UT6D throttles employ the new Digitrax designed and manufactured RF28 Modular Certified 2.4GHz transceiver module. The RF28 is configured to interoperate with existing Digitrax Duplex UR92 LocoNet access points and e.g. DT500D and UT4D throttles worldwide. All Duplex units employ IEEE 802.15.4 PHY/MAC compatible devices using 2.4GHz Direct Sequence Spread- Spectrum (DSSS) modulation. The RF28 was developed for: a)  Smaller size. The venerable RF24 could not fit in the small UT6D, and this case was designed in 2017, so a new smaller Duplex support ...

The ability of a variety Digitrax throttles to work together on layout equipped with a variety of wireless technologies is part of the beauty of LocoNet.  With LocoNet, it is simple to add components to the system and have all of them work together. Digitrax infrared throttles will operate on any layout equipped with UR90 infrared receivers, UR91 simplex receivers and/or UR92 duplex transceivers.  All of these panels are equipped with infrared receivers.  All current model Digitrax throttles have infrared emitters that will work wirelessly with any panel that has an infrared receiver.  All current Digitrax throttles can also be used ...

The UT4 series, UT4, UT4D & UT4R are "traditional" style throttles.  The UT4s were developed from a specification submitted by Digitras users through the Digitrax Yahoo group. These throttles were designed by operators for operators.  They are also great for beginners because of their intuitive controls and reduced feature set. By not offering all the bells and whistles, beginners can run your railroad without accidentally changing settings that might cause problems.   Works with any LocoNet compatible system   4-Digit addressing   Functions F0 - F12 for lighting and sound decoder operation   Direction switch with center brake position   ...

Q:  I am looking for a wrist or neck strap for a UT4R/UT4D to prevent dropping unit. Can you help with a source? A:  It is really hard on the throttles when you drop them on the floor.Here's a handy tip from Zana: Take the throttle cord and loop it with a rubber band and hang it from a Digitrax show lanyard (any other lanyard will do in a pinch).   You can also install hooks on the fascia of your layout for holding throttles with looped cords.I have also seen customers glue things to the back of the throttle for ...

What is the difference between Simplex and Duplex wireless operations and what are the advantages of each?The Digitrax DT400R, DT402R and UT4R throttles operate at the 916.5Mhz radio frequency.  These throttles both use the UR91 for radio communication.  The DT402D and UT4D operate at 2.4Ghz.  They require the UR92 for radio communication. The move to Duplex is meant to improve radio operations and add radio range.  Simplex (UR91) and Duplex (UR92) can operate on the same layout without any issues or interference with each otherWith duplex radio: You’ll select and run your locomotives without plugging in.   You'll dispatch locomotives ...

The following chart indicates: Which Digitrax throttle (DT400, DT400R, DT402, DT402R, DT402D, DT500, DT500D, DT602, DT602D, UT4, UT4R, UT4D, UT6 & UT6D) Works with which LocoNet interface throttle panel (Universal Panel-UP3/UP5/UP7, UR90, UR91, UR92, and UR93) Under which types of communication (Tethered, IR Mode, Simplex Radio, or Duplex Radio). Throttle Interface Chart Throttle UP Panel Tethered UR90 Tethered UR90 IR Mode UR91 Tethered UR91 IR Mode UR91 Simplex Radio UR92 Tethered UR92 IR Mode UR92 Duplex Radio UR93 Duplex Radio DT400 Yes Yes Yes Yes Yes No Yes Yes No No DT400R Yes Yes Yes Yes Yes Yes Yes Yes ...

  Can I add Radio and IR to my Zephyr Xtra?Yes.Adding radio and/or IR to Zephyr and Zephyr Xtra is the same as adding it to any other existing Digitrax layout or Digitrax Starter Set. Digitrax offers InfraRed, Duplex Radio and Simplex Radio systems for wireless operation.  Any combination of these wireless methods can be used on the same layout at the same time.Infra Red Wireless OperationAll current Digitrax throttles are Infrared capable (InfraReady) in that they come from the factory equipped with the IR emitters required to send IR information to LocoNet.  To use this functionality, you only need to ...

Adding duplex radio, infrared or simplex radio to your existing Digitrax system is simple because of LocoNet.InfraRedYou probably already own a DT300, DT400, UT4 or DT402 series throttle. All of these are "InfraReady." These all come with two IR emitters pre-installed. All you have to add for IR operation is one or more UR90 Infrared Receivers to your layout. Most layouts require multiple UR90s because the infrared signal is line of sight. This means that your receiver will need a sight path to the throttles.Simplex RadioDigitrax throttles with an "R" at the end of the part number are simplex radio ...

Can I add Radio and IR to my Big Boy?Yes.Adding radio and/or IR to Big Boy is the same as adding it to any other existing Digitrax layout or Digitrax Starter Set. Digitrax offers InfraRed, Duplex Radio and Simplex Radio systems for wireless operation. Any combination of these wireless methods can be used on the same layout at the same time.Infra Red Wireless OperationAll current Digitrax throttles are Infrared capable (InfraReady) in that they come from the factory equipped with the IR emitters required to send IR information to LocoNet. To use this functionality, you only need to add one ...

  Digitrax Duplex Wireless Functional diagnosis and debug process:   Duplex Background:  The Digitrax Duplex radio system is a two-way RF radio link connecting wireless throttles (DT402D & UT4D) via a UR92 onto LocoNet.  It operates on one of 16 user-selected channels in the 2.4GHz Wi-Fi frequency band.  FCC rules requires that all WI FI devices including the RF24 Duplex transceivers (part of Digitrax Duplex throttles and the UR92) operate co-cooperatively in this 2.4GHz band and have to accept whatever wirelessenvironment is present.  This means that there is no guarantee that Digitrax Duplex will work in all situations or that it will ...

This article stops in a strange place??  We need to find the rest of it and split it up into meaningful chunks.  Also needs meta stuff Troubleshooting in General:Regardless of the guides, manuals, tips, suggestions, experts or whatever, troubleshooting can occasionally degenerate into a vast chasm of darkness and confusion.  It would be impossible to cover all the areas that have, can or may cause problems. This is a general guide to identifying and resolving problems with Digitrax Complete Train Control.  Keep Good Records:Although it may seem to be a pain while setting up your Digitrax system, keeping layout records ...

Digitrax Complete Train Control By Zana & A.J. Ireland Digitrax Complete Train Control makes reliable, realistic train operation and simplified layout wiring a reality. Digital Command Control is incorporated within the Digitrax system to let you control multiple trains independently on the same section of track without blocking. In the real world, engineers control the speed and direction of real trains. Engines operate under their own power independent of the track. Each engine has its own motion characteristics like how fast it speeds up (acceleration) and how long it takes to slow down (deceleration). A locomotive's performance is influenced by ...