Singing Antenna

[Jordan Arndt]

Jimmy Walker wrote:
>
> I'm wondering if anyone else has had this experience.  I was cutting a 20
> meter dipole inside my home on the second floor level where my station is
> located.  I had it hanging from two door about five feet off the floor.  One
> end was about 10 feet from the radio.  The dipole ran away from the room where
> the radio was located.  I want to get the antenna resonant before taking it
> upstairs in the attic.
>
> I had it hooked up the SWR/Wattmeter.  When I put the power to it, the antenna
> started singing with a high pitched whine.  The more power I used (50 - 75)
> watts, the louder the singing.  It scared me.  It made me think it would be
> dangerous in the attic.  It sounded like it was about to arc.  But to what?  I
> talked to a guy last week who was using a 40 dipole in the attic.  I thought I
> would try it.  I would not plan to run more than 100 watts to it.
>
> Anyone have any ideas about this?  Was that a bad idea?  What was the high
> pitched whine?
>
> Jimmy Walker
> WA4ILO
> Macon, GA
>
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Probably your neighbor missing Days of Our Lives.... 73 de Jordan...

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