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September 4th 08, 11:56 AM posted to rec.radio.amateur.antenna

Cecil Moore[_2_] Cecil Moore[_2_] is offline

Cecil Moore[_2_] is offline

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First recorded activity by RadioBanter: Mar 2007

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Baluns?

wrote:
If
you want to call the ground isolation function "choking", that use of
this colloquialism is fine with me but FYI that is not the traditional
vernacular for that that application.

In 1953, my first ham transmitter had an RF choke to allow
DC to reach the 6146 plate while choking the RF thus forcing
it to follow a different path through the pi-net. RF "chokes"
have been around since before I was born.

From "The IEEE Dictionary": "choke - a device for preventing
energy ... in a given frequency range from taking an undesired
path."

That's exactly what the RF choke in my Globe Scout did in
1953 and that's exactly how a W2DU balun works today.
--
73, Cecil http://www.w5dxp.com

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