You're going to need to be more specific about what a "squelch break" is. What are the specific symptoms? Is said NXDN a part of a trunked system & if so, do you have it programmed as such with correct RAN code(s), LCNs, etc? Is it listed in the RR database? Are you using
Sentinel to program? Too many variables come into play to provide a definite answer. If you're hearing
data bursts in between transmissions then something is wrong with your programming