Comm Products 874F-70 open loop antenna

The Author has been making commercial antennas for years. This is a report for a another commercially made one.

This one is built for a heavy duty application for an amateur station on a remote high site with ice loading. It consist of four open loops with a coaxial harness (inside), mounted on a aluminum pipe. It has good return loss. The feed point is terminated with a type N male connector and is at the bottom of this pipe. There is an option of installing two of these to make up an 8-bay antenna with the harness supplied.

It has good return loss figure of about 23 db at the low end and better at the top. Transmitter to receiver desense figure is good as well.

This may be copied in complete form only for non-profit purposes, such as for the knowledge for the Amateur Radio Service, with the Author credited as designer. For other arrangements please contact the Author.