DCCWiki, a community DCC encyclopedia.
| DCC Terms
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| DCC Components
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Accessory Decoder, Auto Reverse, Command station, Computer Interface, Consists, DCC Booster, DCC Ready, Decoder, Digital Packet, How DCC works, Multifunction Decoder, Power supply, Speed Steps, Throttle, XPressNet
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| General
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Address Partitioning, Ammeter, Analog Control of Model Railroads, Bus, Cab, Can Motor, Command Control, Coreless Motor, DCC, DCC in a Box, DMM, Distributed Power, Frog Juicer, Jump Port, LCC, Layout Command Control, Locomotive, Motor, Multiple Unit Consisting, OEM, Phase, Power Bus, Programming Track, Pulse Width Modulation, Rail Size, Serial User System Interface - SUSI, Slots, Standard Dimensions, Turnout Motors, Turnouts with Digital Command Control, Voltage Drop, Zero Stretching
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| Mobile decoder
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Analog Conversion, Back EMF, Decoder Connection Method, Decoder-Assisted Consisting, Digitrax Transponding, Ditch Lights, Dither, Energy Storage, FX Lighting, Functions, High-Frequency Decoders, Kick Start, Lighting Effects, Loco Momentum, Locomotive Interface, NMRA Connector, NMRA DCC Plug for Multifunction Decoders, Power Conversion, Programming Lock, Programming Modes, Quartering, Silent Drive, Snood, Speed Table, USP, XOR
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| Non-DCC
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Primary DCC Components
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| Short Definition
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Flashing Rear End Device
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Summary: FRED or Flashing Rear End Device is a device mounted at the rear of the train, in lieu of a caboose. The dumb FRED is equipped with a battery powered strobe.
Advanced smart FREDs transmit speed and air line pressure via radio to a receiver in the cab. The receiver, SBU (Sense and Brake Unit, Canada) or HOT (Head-of-train, US) is often referred to as WILMA by railroaders.
FREDs can be modelled using SMT LEDs.
Also see FX_Lighting
Want to build your own FRED? See Flashing Rear-End Device For DCC Systems for a schematic, and many other DCC projects.
Other Uses of the Term
Fireman Fred is a series of sound effects available on Tsunami Decoders by Soundtraxx. Sounds such as shovelling coal, injectors, or water being dumped into the tender are available either by a function key or automatically depending on the situation and programming.