Traxxas 2.4 GHz LINK source. I know an Internet shop that has a steady supply and very, very reasonable. I have dealt with this guy a few times and he is great to work with. I'm sure I cannot say here, but I do believe it is OK to PM me for his email.
Moderators ...if I have erred, let me know and delete this.
US Navy retired, now - FAA air traffic controller