No. But for the reasons Bill cited, doing so is a bad idea.
73, Jim K9YC
Jim,
I would not say it is a bad idea, it is a user choice.
Complaining that that you can't add a gridsquare to your CQ calls
if you are using a nonstandard callsign is a bad idea, as it
demonstrates a poor understanding of how weak signal digimodes
work.
