In the text at the start regarding the KXPA100, it mentions an internal ATU option. Later on it states that it is a bolt on. Make your mind up guys ;) 73 Ian -- Ian J Maude, G0VGS SysOp GB7MBC & HB9DRV-9 DX Clusters Member RSGB, GQRP 9838, FISTS 14077 | K3 #455 http://www.m0scg.org.uk