Retevis RT97P is a very popular portable digital/analog repeater. It has UHF or VHF version, and it support customizable frequency,If you are insteresting with it, you can order from Retevis official website.
There is a very good feature on Retevis RT97P. It support mixed mode, this you can only set one channel use a same frequncy to communicate with analog radio and digital radio.
If you have a digital radio, you can set two channel, one is digital repeater channel, another is analog repeater channel. But if you only have the analog radio, you can use the FM mode only on Retevis RT97P repeater.