I have just built a septum feed for 13cm, and equipped it with a flare designed for my 0.6 f/d dish as per OK1DFC's description. What is the correct position at the dish focal point for this feed? Should it be positioned with the mouth of the feed (flare) right at the focal point or...? 73 de Peter SM2CEW www.sm2cew.com http://blog.sm2cew.com