Does Spectrum work on UDB rig? Spooky2 March 07, 2016 01:46 Follow Spectrum does not work on the UDB1108S. It requires the arbitrary wave feature only found on the XM. Please see http://www.spooky2.com/forums/viewtopic.php?f=7&t=2847 Have more questions? Submit a request 0 Comments Please sign in to leave a comment.