Winston Lawrence

Retevis RT73 Configuration and Firmware at the time this was written..

Sometimes you may want to talk on a talkgroup that you have not defined. How do you do this? Read on.
Credit for the information on how to manually enter a talkgroup goes to the kydera-ham-boards.net. There are basically two use cases: One, you do have the contact defined in your contact list but it is not included in the current zone-channel definition - so how do you use it? The other use case occurs when you want to connect to a talkgroup that has never been defined as a contact.

The contact is defined in the contact list but not defined in the zone/channel

1. From the radio menu go into (SELECT) contacts:
2. SELECT "Contact List"
3. Scroll down to HIGHLIGHT the contact you want but DONT press SELECT instead press the PTT button on your mic to talk. The radio will TX on that talkgroup it will NOT change the radio menu to this talkgroup. If you want to hear the response your radio will need to be in promiscuous mode.

The talkgroup is not (pre)defined in the contact list.

1. From the radio menu go into (SELECT) contacts:
2. SELECT "Manual Dial"
3. From the mic keypad enter the talkgroup number that you want.
4. Press the PTT button on your mic to talk. The radio will TX on that talkgroup it will NOT change the radio menu to this talkgroup. If you want to hear the response your radio will need to be in promiscuous mode.

Now that there is a way to dynamically key up a talkgroup and we can put the radio into promiscuous mode. We can put these two things together but that is the subject of a different note - creating the minimalist codeplug
Note: Radioddity has released the Radioddity DB25-D which appears to be exactly the same radio as the RT73 just with different branding (Radioddity instead of Retevis).

'73 KD2WLL