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View Diary: Senate PASSES Community Radio Bill - Low Power FM Nationwide (243 comments)

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  •  Hmmmm. I'm a ham radio operator and I use (2+ / 0-)
    Recommended by:
    bigjacbigjacbigjac, Pris from LA

    100 W on frequencies fairly close to the FM Broadcast band.  With an omnidirectional antenna only 35 ft. high I can hit 25 miles pretty easy.

    "You can never sink so low in life that you can't be a bad example for somebody." - My Dad

    by briefer on Sun Dec 19, 2010 at 06:43:15 PM PST

    [ Parent ]

    •  You're using a resonant antenna up in the air. (2+ / 0-)
      Recommended by:
      briefer, Pris from LA

      How about using a radio receiver whose antenna is the ac line cord?

      Best 73 N Gud DX!

      (Ham here also)

      •  Oh...didn't think of the receiver. (1+ / 0-)
        Recommended by:
        Pris from LA

        I always talk to guys with resonant antennas with a little height (or thru a repeater) [or on HF halfway around the world - heh]

        73
        and
        72 (I do QRP too)

        "You can never sink so low in life that you can't be a bad example for somebody." - My Dad

        by briefer on Sun Dec 19, 2010 at 07:17:15 PM PST

        [ Parent ]

      •  Someone 25m from LPFM can listen, w/ext. antenna (3+ / 0-)

        Lots of hams here on DK tonight.  A station with 100w ERP on a 100' tower will be heard only for a few miles on a typical home or car radio.  But if someone is willing to put up a yagi antenna outside on the roof, they should be able to catch the 100w station from 25 miles away or even more, depending on terrain.

        73, gc  

        •  Unfortunately, the typical listener is not (0+ / 0-)

          going to put up a Yagi or other form of directional antenna on the roof... or even an omnidirectional antenna.  More likely, the listener will be using a receiver that uses the power cord as the antenna, or that has a whip antenna that can be extended (fairly common in portable receivers).

          Some people might be sufficiently motivated to try using an indoor antenna with a built-in preamplifier, but they will be in the minority.  Depending on the situation, an indoor antenna may or may not work.

          Please also keep in mind that people who live in apartments usually do not have the option of installing a rooftop antenna.  Their landlords often will not allow it.

          Please also keep in mind that for full quieting of the receiver, considerably more signal strength is required for stereo reception than for monaural reception.

          You are right, though... the best reception will result with a good directional antenna mounted up in the clear.  If one wants to receive stations located at different points on the compass, an antenna rotator might be required.  This will make the initial installation more costly.

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