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OT FM Receiver Tuner

Discussion in 'Electronic Design' started by Harry Dellamano, Jul 12, 2004.

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  1. What is the best FM Receiver, Tuner that I can buy at E-Bay for my
    lab/office. Best = Performance/Cost. I will use a "T" antenna. Looks and
    size are not important. I just want to pull in FM music stations in a 60
    mile range, loud and clear. I only want noise when my power supplies are not
    ZVS.

    TIA
    Harry
     
  2. Don Pearce

    Don Pearce Guest

    If you are interested in good signals, ditch the T antenna. The
    antenna is by far (repeat many times) the most important factor for
    fidelity in any FM radio system. The single greatest cause of
    distortion is multipath reception, and the best tuner in the world
    won't cure it if your antenna lets it in.

    When I talk about a good antenna, I don't mean one made of high
    quality materials, that costs a fortune - I mean on that has loads of
    elements to give the kind of directivity that provides you a signal
    free from multipath.

    Having bought your great antenna, put it on the roof on a tall pole so
    it isn't nestling among the rooftops, denied line-of-sight to the
    transmitter.

    Having done all that you have a fighting chance of decent reception,
    and you will be amazed how cheap a tuner gives you all the quality you
    could wish for - they are about 90% integrated electronics now, and it
    is hard to distinguish them other than by "features".

    d
    Pearce Consulting
    http://www.pearce.uk.com
     
  3. Tim Wescott

    Tim Wescott Guest

    Probably need a rotator, too, if you want to receive more than one
    station.

    If you want to go over the top a mast-mounted preamp would help with
    reception, but is only to be done _after_ the good antenna is acquired,
    installed, and found to be slightly marginal.

    Even more over the top, one could build a much better FM receiver than
    what's on the market, but unless you're right next door to a rock
    station and you want to listen to classical from 60 miles away you're OK.
     
  4. Ian Stirling

    Ian Stirling Guest

    I was astonished at the difference between an internal antenna, and
    an outside omnidirectional half-wave antenna.
    Simply constructed from wire and bamboo.

    Currently trying to work out the best way to make a wearable FM antenna,
    for devices worn around the neck.
     
  5. Tim Wescott

    Tim Wescott Guest

    That reminds me -- you may also want to call your favorite stations and
    see if they broadcast horizontally or vertically polarized. I thought
    they were all vertical and was _very_ surprised to hear that our local
    classical music station was horizontal (they mentioned it during a fund
    drive as one of the arcane things their engineers said they needed to do :).

    Getting lined up correctly would be worth anywhere from 3 to 20 dB,
    depending on reflections, etc.
     
  6. Don Pearce

    Don Pearce Guest

    In the UK all our FM transmitters are mixed mode, so that pretty much
    any orientation of antenna will pick up a reasonable signal.

    d
    Pearce Consulting
    http://www.pearce.uk.com
     
  7. I read in sci.electronics.design that Tim Wescott
    We used to have horizontal polarization but now we have circular
    polarization, at least for some transmitters, in UK; it gives better
    reception in cars.
     
  8. All the ones here are circular, too.

    Allan.
     
  9. I'm quite happy with my revox b760, built like a battleship, but will
    probably need recapping....

    eg
    http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&category=3282&item=5709325953&rd=1


    martin

    Serious error.
    All shortcuts have disappeared.
    Screen. Mind. Both are blank.
     
  10. IIRC 1976 ish fully transistor and IC (lm301 IIRC), early 16 byte
    static ram coax delay line for the FM demod, sounds fine. Mine in
    storage at themoment, so is the service maunal


    martin

    Serious error.
    All shortcuts have disappeared.
    Screen. Mind. Both are blank.
     
  11. Tim Shoppa

    Tim Shoppa Guest

    GE Superradio. Excellent performance. External antenna connections.
    Low on "features" if that matters to you.

    Tim.
     
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