> a real test with a simulated line? If the latter you are probably best to > get a reel of cable from the local radio Shark or similar store, and find > the inner end, and connect both ends to your circuit. I've seen it done with lumped constants, but I'm having trouble remembering which book it's in. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist