Users, how to contact

Anyone know how to contact another user? not just on the forum, but via private email. I know we can click on a users name in the forum they have posted something on and below their name is some info about them including contact info, but when you cannot find them in the forum, there is no place other than there to locate them. Trying to get in contact with a user down in PA and the rad unit they are using. I have one now and would like to contact them on there unit and how they have it connected. So if Bryan down in PA is reading this, please contact me. Thanks