A clamping pin is provided for mounting in an opening of a medical device. The internal riser is nested within the external riser. The casting surface is coated at least in an area other than the at least one raised antenna pattern with a coating solution. Interest and mystery of message are increased, personality demand of user is satisfied, and load of message center is decreased. A sample and holdde-emphasis circuit has an input coupled to the output of the sample and hold switch, and an output.