The following page is authored by Tony Van Herck, ON4CEQ. He removed the page from his web site because it was generating to much email for him. Ed Loranger, WE6W contacted Tony and he agreed to share this work again with the Ham Radio Community. The Minnesota QRP Society is pleased to host this page. Should you have question about the details or concepts presented here, please do not contact Tony, ON4CEQ. Post a message to QRP-L email list or the antenna newsgroup rec.radio.amateur.antenna with your question and please include this URL in your message.