Hej Byron A Jeff. Tack f=F6r ditt meddelande 03:25 2003-08-17 enligt nedan: >Each channel consist of a video signal and two audio subchannels. So 6= channels >x 2 output buses x 3 subchannels -> 36 relays. Maxim (and maybe competitors) have a 8x8 video switch with matched drivers= included (8 input, 8 out) Search their sites For the audiostuff you can use two HC4051 to get two out from 2x8 in. To control it all use a PIC of course :) /Morgan -- Morgan Olsson, Kivik, Sweden -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.