Thank everyone for the informative comments. I have learned a lot. Take care. Jerry N6VG ----- Original Message ----- From: "Jerry" <n6vg at lanset.com> To: <antennas at mailman.qth.net> Sent: Sunday, August 23, 2009 10:58 AM Subject: 468/Freq in Mhz Hi out there, Is the subject formula good for both #14 wire and 1 inch diameter aluminum tubing? If not, please elaborate. Thank you. Jerry N6VG