[TowerTalk] 80 Meter Delta Loop

[Dick Green]

I feed my 75'-high right-angle 80m delta loop 1/4 wave from the apex, which puts it about 12.5 feet up one side from one of the lower corners. I get a decent match, but have added a 1/4-wave 75-ohm coax stub for matching to the 50-ohm feed line. Works very well.

73, Dick WC1M

> -----Original Message-----
> From: Dennis W0JX [mailto:w0jx at yahoo.com]
> Sent: Thursday, October 11, 2012 11:20 AM
> To: towertalk at contesting.com
> Subject: [TowerTalk] 80 Meter Delta Loop
> 
> When a delta loop is designed for a particular band, and fed in the
> corner, it is not in an optimum configuration. They should be fed 1/4
> wave length from the apex and then will act as a pair of phased
> verticals. See ON4UN's Top Band DXing book for a complete description or
> W4RNL's excellent series on this type of antenna. The loop can also be
> fed at the apex or in the middle of the bottom and then it will exhibit
> horizontal polarization.
> 
> 73, Dennis W0JX/8