Hi Tom, I believe a quarter wave for twenty meters is about 16 feet. God bless, Mark WZ0K God loves you! My personal prayer book. Add your prayer or pray for others at the following link. http://prayerbook.homewithgod.com/cgi-bin/prayerbook/multi.pl?131961113534708:24:0 http://lists.topica.com/lists/funhamradio. http://groups.google.com/group/funhamradio-list http://funhamradio.bloki.com