Hi All, I prefer to use a transformer isolated with a Faraday shield. Say the coupling cap fails short and cooks everything in its path. Frank WA1GFZ -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/attachments/20131212/272e6f8e/attachment-0002.htm>