Build the Pennyloop UHF Antenna

The Pennyloop UHF antenna offers high performance in a very simple and cost effective design. It is also a very compact design lending itself well to a variety of mounting options and locations inside and outside. Outside will give the best performance. The antenna is about 18″ tall and 9″ wide. The Pennyloopantenna started out as a single loop antenna and could be used with a reflector. It was found through extensive testing, at least in my area, that the UHF signal strength is very “layered”. A single loop antenna, or even a simple thick element dipole for that matter, would pick up all of my distant stations – Just not at the same height! A new design emerged from this common issue with UHF signals. The antenna did not need to be excessively tall, but needed some additional height to cover each of the signal layers at the same time. This design goal was achieved in the Pennyloop by having a second loop installed on the original feed point. It served several purposes. It increased the gain substantially, focused more on the horizon where the signals were coming from, and gave the additional height needed to be in each of the signal layers simultaneously.

Read Full Article:

Recent Posts

QST Antenna Design Competition

May 04, 2017 No comments

The deadline to submit entries for the 2017 QST Antenna Design Competition is Thursday, June 1. Enter in one of three categories — 160 meters, LF, or... Read more

AFFECTED BY ANTENNA ATTACK

May 13, 2020 No comments

AFFECTED BY ANTENNA ATTACK Three Archi stations on the Big Island of Chiloé, specifically, from Ancud, experienced surprise and dismay this Tuesday mo... Read more

Monitoring HF Aviation Voice Communications with your SDR Radio or a WebSDR

May 28, 2021 No comments

There is still plenty of activity on the HF Aeronautical bands. You can listen to civil and military aircraft every day with just some frugal hardware... Read more

BWDS Base Broadband HF Folded Dipole Antenna

January 11, 2015 No comments

Barker & Williamson’s BWDS series of broadband folded dipole antennas, together with our MK114  or MK112 mast systems, gives rear tactical a... Read more