I wonder if tx pl tone of 60hz would cause a problem with the ctcss decoder? I understand that Motorola, GE etc suggest not using 179.9 (3rd harmonic of 60hz) due to power line in US? Ron -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.tapr.org/pipermail/aprssig_lists.tapr.org/attachments/20080506/f20c3673/attachment.html>