Yes - I forgot to mention the interference problem as for only 10ft of transmission distance the power levels can be kept very small - and the receiver current can be minimised reducing its spurious outputs to quite a low level. (As per the "Electronics World" article) Richard P Hi, I don't recomend using seo for tx, freq stability would not be good. Also super regen ccts do work and can be sensitive, but care is needed to stop radiating "hash". Good luck. Ivan -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body