Went hunting with a friend today and as soon as I turned the Deus on it went crazy. Have never had this problem before so just assumed that I was in an area with bad EMI. Changed frequencies, lowered sensitivity, all to no avail. As soon as I moved about 15 ft away from my friend with the CTX things quieted down. Seems like the CTX uses all of the same frequencies as the Deus. Has anyone else had this problem? Never had this problem with my F70.