Beginning this summer, the Brandmeister DMR network will no longer support certain devices with DMR IDs that begin with the number 1. Hams utilizing the Brandmeister network with affected DMR IDs are encouraged to request a new ID from RadioID. Brandmeister is requiring their users to obtain DMR IDs that adhere to a Mobile Country Code (MMC) standard to help facilitate automated process that make up the Brandmeister network.
5-digit CAP+ IDs will stop working June 1st. 7-digit personal radio IDs starting with 1 will stop working January 1, 2026. Repeaters with 6-digit radio IDs starting with 1 will continue to work indefinitely.
Source: Brandmeister