Digitrax

The Digitrax SHABC is a complete turnout signalling kit for HO scale. A turnout needs three signals to be done properly - a dual-head mast facing the points that can show both routes, and single-head masts covering each leg beyond - and that is exactly what is in the box, along with the mounting board, plugs and hardware. Current-limiting resistors are already fitted. Signalling your layout? Browse our DCC Accessories, DCC Wiring, and the full Digitrax range. What's Included Item Qty Dual Head A Signal 1 Single Head B Signal 1 Single Head C Signal 1 SMP1 signal mast plug 3 Spacers 6 Screws 6 Features Everything for one turnout signal plant - three signals, mast plugs, spacers and screws in one box. Dual-head A signal to show both the straight and diverging routes at the points, plus B and C single heads for each leg. Plug and play 10-pin connectors so signals lift out when you are ballasting or working on scenery. Current-setting resistors built into the board - nothing to calculate, nothing to solder. Pads are provided to attach any signal head to the mast base if you want to mix in other manufacturers. Intended for use with the Digitrax SE8C signal decoder. More Information Brand Digitrax Item Number SHABC Product Type Signal Kit Scale HO Configuration Turnout - A, B and C masts Signal Heads 1 dual head, 2 single head Connector 10-pin plug and play Resistors Built into the mounting board Use With Digitrax SE8C signal decoder Condition New FAQ What is the difference between this and a mainline kit?A turnout needs three signals, not two: a dual-head A mast protecting the points and showing both routes, plus single-head B and C masts for each leg beyond. A mainline kit such as the SH2AB only covers plain double track. Do I need anything else to make the signals work?Yes - a signal decoder to drive the aspects (the SE8C is the intended partner), cabling to reach the masts such as the SDCK kit, and some form of block occupancy detection. Do I need to add resistors?No. Current-setting resistors are already on the mounting board, so there is no resistor maths and no risk of over-driving an LED. Can I mix in signal heads from other makers?Pads are provided on the mast base so you can attach other signal heads if you want a specific prototype. The plug arrangement and resistor board are designed around the Digitrax SE8C.

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The Digitrax LNC501 is a pre-made, pre-tested 50-foot LocoNet cable for connecting throttles, boosters, and accessories on any Digitrax-equipped layout. Factory-terminated with 6-pin RJ12 plugs on both ends, it's the easy way to extend your LocoNet without crimping your own connectors. Need more LocoNet gear? Browse our DCC Components and Track Tools & Accessories. Features Pre-made and factory-tested for trouble-free LocoNet connections. 50 feet (15.2 m) of 6-conductor flat cable with RJ12 plugs on both ends. Plug-and-play with all Digitrax LocoNet throttles, boosters, and accessories. Can be cut to custom lengths and re-terminated using the Digitrax LocoNet Cable Maker Kit and RJ12 plugs. Works with all scales — HO, N, O, G, Z, and S. More Information Brand Digitrax Item Number LNC501 Scale All Scales Product Type DCC Wiring / LocoNet Cable Cable Length 50 feet (15.2 m) Connector RJ12 (6-pin) on both ends Cable Type 6-wire flat Condition New FAQ Will this work with my Digitrax system?Yes. The LNC501 is a standard LocoNet cable and is compatible with every Digitrax throttle, booster, and LocoNet accessory. Can I shorten or splice this cable?Yes. You can cut it to length and re-terminate it using the Digitrax LocoNet Cable Maker Kit (LT1 / LCBK01) along with RJ12 plugs. Is this the same as a phone cable?It uses the same 6P6C (RJ12) connector style as a phone cable, but LocoNet cables are wired straight-through and tested for the higher-speed LocoNet bus. We recommend using a true LocoNet cable like this one to avoid intermittent throttle drops. What scales is this compatible with?All scales — the LocoNet bus is independent of track gauge, so it works for HO, N, O, G, Z, S, and any other scale layout running Digitrax.

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If you've ever spent an evening crawling under your layout chasing a phantom LocoNet glitch, you already know how welcome the Digitrax LT1 is in a DCC toolbox. This compact tester checks LocoNet cables for proper wiring and lets you bench-test mobile decoders before they ever go near a locomotive, so problems get caught at the workbench instead of in the middle of an operating session. What's in the Box LT1 tester board with four diagnostic LEDs and a female 6-pin RJ12 jack Test harness with 6-conductor telco wire, male RJ12 plug, and a 100-ohm 2-watt protection resistor Printed instruction sheet covering both cable and decoder testing modes Why Hobbyists Reach for the LT1 Verify LocoNet cables in seconds. Plug a cable between the LT1 and any powered Digitrax command station or booster, and all four LEDs light up when the cable is good. Any dark LED tells you exactly which conductor failed. Test decoders before installation. Connect a mobile decoder to the harness, set it on your programming track or main, and use your throttle to confirm motor output, lighting functions, and DCC response without soldering it into a locomotive first. Catch shorts and bad crimps early. Especially useful if you build your own LocoNet cables with a crimper and bulk telco wire — one quick LED check confirms the crimp before the cable disappears under benchwork. Works with any scale. Z, N, HO, S, O, or G — if you run a Digitrax LocoNet system, the LT1 belongs in your toolbox. Specifications Brand Digitrax Item Number LT1 SKU 245-LT1 Type LocoNet Cable & Decoder Tester Connector RJ12 6-pin (telco) Indicators Four diagnostic LEDs Protection 100-ohm 2-watt resistor on harness Scale All scales (Z, N, HO, S, O, G) Compatibility All Digitrax LocoNet command stations, boosters, and starter sets Frequently Asked Questions Does the LT1 work with non-Digitrax DCC systems?The cable-test function works with any standard RJ12 6-pin telco-style cable, but the LocoNet test mode is specific to Digitrax LocoNet (NCE, MRC, and ESU systems use different bus wiring). For decoder testing, the LT1 works with any NMRA-compliant mobile decoder paired with a Digitrax throttle and command station. Do I need a separate power supply?No. The LT1 draws everything it needs from your Digitrax command station or booster through the LocoNet jack you plug it into. Can I test stationary decoders or accessory decoders with it?The LT1 is designed for mobile (locomotive) decoders. Stationary and accessory decoders use different wiring and are best tested with a dedicated programmer or in their intended layout circuit. What does it mean if only some LEDs light up?Each LED corresponds to a specific conductor in the LocoNet cable. A dark LED tells you which wire is broken, miscrimped, or shorted — usually pointing you straight at a bad RJ12 plug on one end of the cable. More from Squeaky's Trains Pair the LT1 with a full DCC accessories stash, browse our Digitrax collection for command stations, boosters, and throttles, or stock up on DCC decoders to bench-test with your new LT1.

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The Digitrax DS44 is a basic quad stationary decoder that puts four slow-motion turnout machines, such as the Circuitron Tortoise, under DCC control. Throw your turnouts from any throttle on the layout. It takes its power and commands straight from the track, so hookup is two wires to the rails plus the turnout machine leads. Important: the DS44 is for slow-motion (stall-motor) turnout machines only. It will not work with solenoid or twin-coil switch machines such as Atlas, Peco or Kato snap machines. Specifications Brand Digitrax Item Number DS44 Type Basic quad stationary decoder Outputs 4 (A, B, C, D), one slow-motion turnout machine each Turnout Machine Types Slow motion only Power From the track (red and black wires) Addressing Set individually or in groups of 4 (factory default 1 to 4) Scale All scales Includes 1 DS44 stationary decoder, 1 instruction card Made In USA Warranty Digitrax one-year No Worries Warranty UPC 652667080033 Features Controls 4 individual slow-motion turnout machines from your DCC throttle Quick setup: send one switch command and the DS44 takes a sequential group of 4 addresses (for example 5, 6, 7, 8) Individual setup: give each output any switch address you like (for example 6, 13, 25 and 105) Track powered, so no separate accessory power supply is needed Works with Digitrax and other NMRA-compatible DCC systems Compact, shrink-wrapped board that tucks under the benchwork Frequently Asked Questions Will the DS44 run Atlas, Peco or Kato snap switch machines?No. It only drives slow-motion stall-motor machines like the Tortoise. Solenoid (twin-coil) machines need a different stationary decoder. How do I set the addresses?With track power off, connect the red and black wires to the track. Temporarily connect the white setup wire to the same rail as the black wire to set a sequential group of 4, or to the same rail as the red wire to set each output individually. Turn power on, operate the switch address (or the 4 addresses, in order A to D) from your throttle, then disconnect the white wire and fold it away. Does it need its own power supply?No. The DS44 is powered from the track through its red and black wires. What scale is it for?Any scale. It controls the turnout machines, not the track, so it works for N, HO, O and larger. Explore More Browse more DCC Decoders and Electronics & Wiring at Squeaky's Trains & Things.

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The Digitrax LT5C is a handy LocoNet diagnostic tool — it plugs into any LocoNet jack and uses an LED indicator to verify that the cable, the jack, and the LocoNet bus power are all wired correctly. The LED lights up only when ALL six pins of the RJ12 jack get correct signal — making it the fastest way to find a bad cable, a miswired UP5/UP6 panel, or a broken LocoNet run before you spend hours debugging your throttles. This 2-pack gives you one to leave at the start of your bus and one to walk around with. Looking for more DCC tools and accessories? Browse our DCC Decoders and Electronics & Wiring collections. Features 2 LT5C tester modules per pack — one for each end of the bus, or one for the home base and one to walk the layout. Plugs into any standard Digitrax LocoNet RJ12 (6P6C) jack. Single LED indicator lights when all six pins are wired correctly — instant pass/fail. No batteries, no setup — passive diagnostic, draws power from LocoNet. Compact key-fob sized housing, slips into any toolbox or pocket. More Information Brand Digitrax Item Number LT5C Type LocoNet cable / jack tester Quantity 2 testers per pack Connection RJ12 6P6C plug Indicator Single LED — on = pass / off = fail Power Drawn from LocoNet bus (no batteries) System Digitrax LocoNet Condition New — sealed FAQ What does it test?It verifies all six LocoNet pins are correctly wired AND that the LocoNet bus is delivering signal at that jack. If the LED is dark, you have either a bad cable, a miswired UP5/UP6 panel, an unplugged section, or a dead command station. Will the LT5C find a specific bad wire?Not exactly — it gives a pass/fail on the whole jack. To narrow down which pin is bad you'd plug it into successive jacks along the bus to find where the fault starts. For pin-by-pin testing, Digitrax also makes the LT1 (more detailed but discontinued in some regions). Do I need two?Two-pack lets you leave one at the command station to confirm the bus is alive, then walk the layout with the other to verify each UP panel and run as you set up or debug. Many builders also leave one permanently plugged into a hard-to-reach drop point for instant verification. Will it work on non-Digitrax DCC systems?No. LocoNet is Digitrax-specific. NCE, MRC, and other DCC systems use different cab buses.

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The Digitrax LNMC3 is a 3-pack of LocoNet modular couplers — small inline RJ12 (6P6C) joiners that connect two LocoNet cables together to extend a run or splice in additional length. Each coupler has a female RJ12 jack on both ends, so you can chain standard LocoNet cables (like the LNC82) into a longer drop without cutting or crimping anything. Looking for more DCC wiring and accessories? Browse our Electronics & Wiring and DCC Decoders collections. Features 3 modular couplers per pack — join LocoNet cables end-to-end without tools. Female RJ12 6-position 6-conductor (6P6C) jack on both ends — matches all Digitrax LocoNet cables. Maintains full 6-wire LocoNet signal through the connection. Compact inline housing — tucks neatly under benchwork. No batteries, no setup — passive pass-through connector. More Information Brand Digitrax Item Number LNMC3 Type LocoNet modular coupler / inline joiner Quantity 3 couplers per pack Connection RJ12 6P6C female — both ends System Digitrax LocoNet Condition New — sealed UPC 652667180078 FAQ What do I use these for?To join two LocoNet cables into one longer run — for example, connecting two 8-foot LNC82 cables to reach 16 feet, or splicing a short jumper into an existing drop. Plug a cable into each end of the coupler. Are these the same as a UP5 panel?No. A UP5/UP6 is a powered plug-in panel for throttles. The LNMC3 is just a passive female-female joiner to extend cable length — no throttle jack, no power, no faceplate. Will signal degrade through the coupler?For typical home-layout runs, no — LocoNet tolerates couplers fine. Avoid chaining many couplers on very long runs; if you need long distance, use a single long cable instead. Digitrax only?Yes — LocoNet is Digitrax's proprietary bus. The connector is standard RJ12 but the wiring/signal is LocoNet-specific.

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Block detection tells you a section is occupied. Transponding tells you which locomotive is standing in it. The Digitrax RX4 is the receiver that makes that possible: four transponding zones per board, reading the low-current pulses sent by transponder-equipped locomotives and cars, so the system knows not just that something is there but exactly what. More layout detection gear? Browse our DCC Accessories, DCC Wiring, and the full Digitrax range. Features Four transponding zones per RX4 - identify which locomotive or car is in each zone, not just that the zone is occupied. Low-current pulses that do not interfere with DCC decoders or other track signals. Works alongside your existing occupancy detection, adding identity to the detection you already have rather than replacing it. Compatible with most DCC systems, and adaptable to a range of layout wiring arrangements. The foundation for automatic routing, dispatcher displays and computer-driven operation that needs to know which train is where. More Information Brand Digitrax Item Number RX4 Product Type Block Transponding Receiver Scale All scales Zones 4 transponding zones per board Detection Type Transponding - identifies the equipment, not just occupancy Compatibility Most DCC systems Condition New FAQ What is the difference between detection and transponding?Occupancy detection reports that something is drawing current in a block. Transponding reports which decoder address is there. If you want a dispatcher panel or a computer to route trains by identity, you need transponding. Do my locomotives need anything special?Yes. Transponding only works with transponder-equipped equipment - either a decoder with transponding built in, or a separate transponder fitted to a car. Will the pulses upset my sound decoders?No. Transponding uses low-current pulses designed to sit alongside the DCC signal without interfering with decoders or other track signalling. Does it replace my block detectors?No, it complements them. Many layouts run both, using occupancy detection for the basic signal logic and transponding to identify what is in each block.

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The Digitrax SP28288 is a 28mm round 8 ohm speaker, the classic full-size cone for HO and larger sound installs. The bigger diaphragm moves more air than the small oval and 13mm speakers, so prime movers and whistles come through with real body - mount it in a sealed baffle and a single 28mm speaker will fill a room. Looking for more DCC sound gear? Browse our DCC Speakers, DCC Decoders, and DCC Accessories. Features 28mm round cone gives noticeably more volume and low end than 13mm or oval speakers, the usual choice for HO diesel hoods, boilers and tenders. 8 ohm impedance matches the speaker output on most DCC sound decoders, Digitrax and otherwise. Interface wires pre-attached - nothing to solder at the speaker, just tin and connect to the decoder pads. Baffle or enclosure strongly recommended. A 28mm cone run bare cancels its own bass; in a sealed box the difference is dramatic. Check clearance before ordering - 28mm needs about 1-1/8 in. of width, which rules out most N scale shells. More Information Brand Digitrax Item Number SP28288 Product Type DCC Sound Decoder Speaker Speaker Shape Round Diameter 28 mm Impedance 8 Ohm Connection Bare interface wires (no plug) Enclosure Not included - baffle recommended Recommended Scale HO, O, G Condition New FAQ Which impedance do I need, 8 ohm or 32 ohm?Match the speaker to what your decoder manual specifies. Most DCC sound decoders drive 8 ohms. If yours calls for 32 ohms, use the Digitrax SP282832 - the same 28mm speaker in a 32 ohm version. Will a 28mm speaker fit my locomotive?It needs roughly 1-1/8 in. of clear width plus depth for a baffle. That is comfortable in most HO diesels, larger steam tenders, and anything O or G. For N scale or a tight HO steam boiler, use the 13mm SP13138 or the oval SP10188 instead. Do I really need an enclosure?Yes, if you want it to sound like a locomotive rather than a transistor radio. Sealing the back of the cone stops the rear wave cancelling the front wave, which is where all the bass comes from. Can I run two speakers off one decoder?Two 8 ohm speakers in series make 16 ohms and are safe on most decoders. In parallel they make 4 ohms, which can overheat the decoder amplifier - check your decoder manual first.

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The Digitrax SP282832 is a 28mm round speaker in the 32 ohm version, for sound decoders whose amplifier expects a 32 ohm load. It is the same full-size cone as the 8 ohm SP28288 - the extra diaphragm area gives HO and larger locomotives real low-end punch - and it ships with interface wires already attached. Looking for more DCC sound gear? Browse our DCC Speakers, DCC Decoders, and DCC Accessories. Features 32 ohm impedance for decoders that specify a 32 ohm speaker. Fitting an 8 ohm speaker to a 32 ohm output is the most common cause of distorted or quiet sound. 28mm round cone moves far more air than 13mm or oval speakers - the usual pick for HO diesel hoods, boilers and tenders. Interface wires pre-attached - nothing to solder at the speaker end. Baffle or enclosure strongly recommended. A sealed box is the difference between thin and convincing. Needs roughly 1-1/8 in. of clear width plus depth for the baffle, so check the shell before ordering. More Information Brand Digitrax Item Number SP282832 Product Type DCC Sound Decoder Speaker Speaker Shape Round Diameter 28 mm Impedance 32 Ohm Connection Bare interface wires (no plug) Enclosure Not included - baffle recommended Recommended Scale HO, O, G Condition New FAQ How do I know if I need 32 ohm or 8 ohm?Your decoder manual states the rated speaker impedance. Use this 32 ohm speaker only where the decoder calls for 32 ohms. If it calls for 8 ohms, use the Digitrax SP28288 instead - same speaker, 8 ohm version. What happens if I use the wrong impedance?Too high an impedance gives quiet, thin sound. Too low draws more current than the decoder amplifier is rated for and can overheat or damage it. Matching the decoder spec is always the safe route. Will a 28mm speaker fit my locomotive?It needs about 1-1/8 in. of clear width plus room for a baffle - fine in most HO diesels, large steam tenders, and anything O or G. For N scale or a tight boiler, use the 13mm SP13138 or oval SP10188. Do I need an enclosure?Strongly recommended. Without one the rear wave cancels the front wave and you lose the bass entirely. Even a simple sealed styrene box makes a clear difference.

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The Digitrax SP10188 is a 10 x 18mm oval 8 ohm speaker - the shape that solves N scale sound installs. An oval fits the long, narrow space along the top of an N scale shell or inside a tender where a round speaker of the same area simply will not go, and it ships with interface wires already attached. Looking for more DCC sound gear? Browse our DCC Speakers, DCC Decoders, and DCC Accessories. Features 10 x 18mm oval footprint fits the long narrow cavities in N scale shells and small HO boilers where a round cone will not. 8 ohm impedance matches the speaker output on most DCC sound decoders. Interface wires pre-attached - nothing to solder at the speaker end. Baffle or enclosure strongly recommended. Small speakers gain the most from a sealed box; run bare, an oval this size sounds thin. Works with any DCC sound decoder rated for an 8 ohm load, Digitrax or otherwise. More Information Brand Digitrax Item Number SP10188 Product Type DCC Sound Decoder Speaker Speaker Shape Oval Dimensions 10 mm x 18 mm Impedance 8 Ohm Connection Bare interface wires (no plug) Enclosure Not included - baffle recommended Recommended Scale N, HO Condition New FAQ Why choose an oval speaker over a round one?Shape. N scale shells and small steam boilers give you a long narrow cavity, not a circle. An oval uses that space, so you get more cone area than a round speaker that has to fit the narrow dimension. Will it work with my sound decoder?Any DCC sound decoder rated for an 8 ohm speaker output. Check the decoder manual - if it specifies 32 ohms, you need a 32 ohm speaker instead. Do I need a baffle?It makes a large difference at this size. Sealing the back of the cone is what produces the bass; without it the front and rear waves cancel and the sound goes thin and tinny. Is there a bigger option for HO?Yes. If the shell has room, a 28mm round or one of the rectangular box speakers with an enclosure will give you noticeably more volume and low end.

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The Digitrax DO487 is the heavy hauler of the mobile decoder range: four amps continuous and five amps peak, wired rather than plugged, for the large-scale and O scale locomotives that will cook an ordinary HO decoder. Eight FX3 function outputs at 300mA give you the lighting capacity to match, and because it is a wired decoder it goes into anything you can solder to. Building a DCC fleet? Browse our DCC Decoders, DCC Speakers, and DCC Accessories. Features 4.0 amps continuous, 5.0 amps peak - built for large-scale and O scale mechanisms, dual-motor drives and older high-draw motors. 8 FX3 function outputs at 300mA for headlights, marker lights, cab lighting, smoke units and other accessories. Wired installation - no socket required, so it suits scratch installs, brass models and repowered older locomotives. Suits HO, S, O and G scale where the current draw justifies it. Standard NMRA DCC - runs and programs on any DCC system, not just Digitrax. More Information Brand Digitrax Item Number DO487 Product Type DCC Mobile Decoder (High Capacity) Scale HO, S, O, G Motor Current 4.0 A continuous / 5.0 A peak Function Outputs 8 x FX3, 300 mA Connection Wired - no plug fitted Sound No - motor and function decoder only Condition New FAQ Do I actually need a 4 amp decoder?Only if the locomotive draws it. Measure stall current on DC before deciding - a typical single-motor HO diesel pulls well under an amp and is fine on a 1 amp decoder. Reach for the DO487 when you have a large-scale mechanism, twin motors, or an older open-frame motor. Will it fit in the locomotive?It is a physically larger board than an HO decoder, which is rarely a problem in O or G scale. In HO it is worth measuring the available space in the shell or tender before ordering. Does it have sound?No. The DO487 is a motor and function decoder. Pair it with a separate sound decoder, or choose a high-current sound decoder instead, if you want audio. How do I wire it in?Track pickups to the red and black leads, motor to orange and grey, and function outputs to your lighting. Isolate the motor completely from the frame before you connect anything - a motor still grounded to the chassis is the most common way to destroy a decoder.

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The Digitrax SMBK is a three-pack of signal mast bases - the part that sits in the scenery, takes the plug from the signal driver cable and holds the signal head at the right height. Use them as bases under signals in any scale, or paint and detail them and they work as finished N scale signal masts in their own right. Signalling your layout? Browse our DCC Accessories, DCC Wiring, and the full Digitrax range. Features Three signal masts per pack, enough for a full turnout signal plant or three mainline positions. Works as a mast base in any scale - it carries the plug connection and sets the signal at the right height above the scenery. Doubles as a finished N scale mast once painted and detailed, so one part covers two jobs. Designed to mate with the 10-pin signal plugs used across the Digitrax signalling range. Pairs with the SMHK mounting hardware kit, which holds the plugs at the right distance under the layout. More Information Brand Digitrax Item Number SMBK Product Type Signal Mast Base Kit Scale All scales as a base, N scale as a finished mast Quantity 3 signal masts Connector For 10-pin Digitrax signal plugs Finish Unpainted - paint and detail as required Condition New FAQ What does a mast base actually do?It anchors the signal through the layout surface and carries the plug connection down to the signal driver cable underneath, so the signal itself stays removable. Can I use these in HO or O scale?Yes, as bases. At those scales the base sits below or behind the scenery and the visible mast is your signal head assembly. Only in N scale is the part itself convincing as the finished mast. What else do I need?A signal head or kit, cabling such as the SDCK, and the SMHK mounting hardware kit to hold the plugs at the correct depth under the benchwork. Do they come painted?No. They are supplied plain so you can paint and weather them to match your prototype.

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