Promiscuous mode is a feature of DMR radios, but not all DMR radios have this mode. The radio is designed for the commercial market doesn't have promiscuous mode. But many of our Retevis DMR radio have this feature, for example, Retevis RT3S, RT82,RT84, RT90,Ailunce HD1, and the new hot selling Mobile Radio RetevisRT73.
What does promiscuous mode actually do?
Promiscuous mode allows you to listen in to any talk groups on the channel you are using, it doesn’t let you hear any color code, you still have to have the correct DMR color code. But it does allow you to listen to any talk groups, let me give you a demonstration of this on Retevis RT73 now.
It is a little difference with other DMR radios, you do not need to turn on the promiscuous mode on destination channel. On Retevis RT73, you only need to set a customizd button.
Download the latest software from below link: https://www.ailunce.com/Support/RT73/Software
Create the DMR channels you want to use. and then go to the preset buttons. Choose "Promiscuous" to any customised button you want to use. It is very inconvenient to turn on Promiscuous mode for any channels.
You can see clearly on the display " Promiscuous on or off". Turn on Promiscuous mode, you cant only receive any talkgroups not only from the Rx GroupList.