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ndbprr: Yes, your PFM system is definitely more advanced than mine -- there's no tape deck on mine and only 1 whistle switch, though it does have the hiss control and 5 range whistle tone control. The more I think about it, the less appealing it sounds to try to install the LTM in the Big Boy. Now I'm thinking of perhaps just using the LTM as an external speaker mounted under the layout. Was I right in that the PFM sound system only controls one locomotive at a time? That is, there is no provision to send different sound signals to a multiple locomotive consist? The manual says that if I want to use an external 8-ohm speaker, I need to insert a PFM-03 "RF Trap" and a PFM-05 "Audio Bypass" into the line going to the speaker. Anybody know what those components actually are? Are they something I can maybe find a substitute for at Radio Shack? But if I use the LTM as the speaker, wouldn't that already have the necessary electronics for the RF Trap and Audio Bypass? I could even wire up an old DC motor to the LTM with a wheel attached to simulate the driver with the non-conductive paint for the wiper that feeds power to the capacitor. Since none of the PFM sound system would actually be connected to the track bus, it should have no effect on the DCC that uses the track bus, right? Or is the absence of the track load likely to cause problems with the PFM Sound Generator? rrinker: Who's sound decoder would you recommend? You mentioned not liking MRC. How about Digitrax? I've also heard of an outfit called "Soundtraxx", but don't know if they make sound decoders for steam engines. Also, is the sound decoder a separate item from the DCC decoder or are they combined? Guess I'm still confused. ;-) Thanks again for any input. Bill V.
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