160 / 80 meter coaxial loop receiving antennae

[John]

Fellow Greenies:

(Please pardon the off-topic bandwidth.)  Do any of you have any experience using 160 / 80 meter coaxial receiving antennae?  I looked at a Website that chronicled these unique antennae, but its URL has been changed.  How can I find out more about these quiet antennae?

Best DX and

Very 73,

John, W8QA

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