6RailKing M10000 Diesel EngineProto-Cast and Proto-Dispatch:When used with the RailKing Remote Lock-on (sold separately),Loco-Sound-equipped engines gain Proto-Cast™ and Proto-Dispatch™features.Proto-Cast: This feature allows you to play audio recordings through yourengine’s speakers. You must supply the audio source (a small portable issufficient) and a male-to-male mini cable (1/8” plug, like that used for theheadset with a portable CD/tape player) to connect your audio source to theremote lock-on. To use Proto-Cast, simply plug the mini-cable into your audiosource (usually into the headphone jack) and into the “Audio” port on the rightside of the remote lock-on and adjust the volume.Proto-Dispatch: This feature allows you to broadcast your own voice throughyour engine’s speakers. You must supply the microphone and a mini cable(1/8” plug, like that used for the headset with a portable CD/tape player) toconnect your microphone to the remote lock-on. To use Proto-Dispatch,simply plug the mini-cable into the microphone and into the “Mic” port on theleft side of the remote lock-on and speak into the microphone.When these features are in use, the locomotive’s own sounds (engine soundsand bells, whistles, and horns) will be muted so that only the sounds youbroadcast will be heard. Because these two features are voice activated, therewill be a 10-15 second delay after you stop speaking into the microphone orturn off the audio source before the engine sounds resume. To stop using thefeature and return to normal operation, unplug the cable from the lock-on jack.If using parallel tracks with multiple Loco-Sound-equipped engines,Proto-Cast and Proto-Dispatch transmissions from one track may be picked upby the other nearby engines.If you experience popping and interference, try cleaning the track withdenatured alcohol as described in the “Cleaning the Wheels, Tires and Track”section of this booklet.Note: M.T.H. does not recommend using Proto-Cast and Proto-Dispatchat the same time.