Ok...here is the gist of what I was told by the folks at
[email protected].
1. A sub-250g drone is not required to transmit RID when flying for recreational purposes.
2. A sub-250g drone that is registered for Part 107 must transmit RID when flying recreationally unless:
a. The sub-250g drone is registered for recreational purposes in addition to its existing commercial registration (dual registration).
b. The add-on broadcast module is able to be removed from the drone when flying recreationally. That makes sense because if the module cannot be removed then the drone likely weighs 250g+ which requires active RID.
c. The drone is labeled with both the commercial and recreational registration numbers.
The surprising item, for me, I did not know that a drone can simultaneously have dual (recreation and commercial) registration numbers.
Why did I want to know this? Well, I fly 90% recreationally and I would prefer not to broadcast my location so as to keep all the Nosey Nellies away.