Wikipedia:Articles for deletion/RadCon
I found another source other than the ones you mentioned: http://www.keprtv.com/news/local/15729347.html.  I personally think that this solidly meets .  The three articles here are written in detail about the topic, we now have two independent sources, and if you read the articles, you will find that the convention has been going for over 16 years.  It may not be interesting to everyone but I certainly think it is worth keeping and I certainly think it meets 
— User:Cazort, 14:06, 19 April 2009 (UTC)
Stance: keep
Cited policy: WP:N||WP:N (Wikipedia:Notability)