what is FM multipath?

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Posts: 15,722
edited April 2004 in Electronics
i'm looking for a vintage FM tuner. and I run into outputs on the back of some tuners that say FM Multipath. can anyone please explain and how do you use it?

thanks, AL
PolkFest 2012, who's going>?
Vancouver, Canada Sept 30th, 2012 - Madonna concert :cheesygrin:
Post edited by danger boy on

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  • Posts: 10,177
    edited April 2004
    Whoa... some very old brain cells trying to fire up here...

    Want to say that multipath was a filter system to select and lock in the strongest signal for a given frequency. Many times reflections of the same source signal exist due it buildings, etc., that might be present. These reflections would be time delayed and if all were pulled in by the tuner, the result is a less than clean listening experience.

    As I recall an analogous term used was "picket fencing". I seem to remember this mostly being related to car audio as a static chatter that occurred driving through downtown.

    Anyway a tuner with a good design should detect the strongest signal and reject the weaker reflections. Ditto for other stations' signals limping into your listening region.

    Obviously where you live impacts the importance of a tuner's performance in this area, i.e., a Nebraska farm vs. a NYC apartment.

    At least that's what the old brain cells are saying.

    EDIT: Well appears there's life in the old noggin after all. A Google of "fm multipath" turned up this little gem amongst others...
    http://www.installer.com/tech/multipath.html
    More later,
    Tour...
    Vox Copuli
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  • Posts: 15,722
    edited April 2004
    thanks for the link. it does make sense. so i can hook up these multipath output RCA's to my pre amp i guess.
    PolkFest 2012, who's going>?
    Vancouver, Canada Sept 30th, 2012 - Madonna concert :cheesygrin:
  • Posts: 25,576
    edited April 2004
    Yes.
    CTC BBQ Amplifier, Sonic Frontiers Line3 Pre-Amplifier and Wadia 581 SACD player. Speakers? Always changing but for now, Mission Argonauts I picked up for $50 bucks, mint.

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