I suggest you get a copy of Boothe's article from QST the Minooka Special, QST, Dec 1974 and here: http://www.pi4cc.nl/link/bc.htm or here: http://my.core.com/~ai9l/min.html 73, Craig Clark, K1QX RADIOWARE AND RADIO BOOKSTORE PO BOX 209 RINDGE NH 03461 603 899 6957 WWW.RADIO-WARE.COM