In-Reply-To: <004d01c0b473$9b9beda0$43f09e3e at debitel.net> Thanks Jurgen My RS catalogue is a bit out of date (1999!) looked in my RS web account and found what I wanted :o) Out of stock of course :o( Cheers.. Keith (currently enjoying his new Wasp filter) http://home.freeuk.net/lowpass