It might be worth checking out https://www.assemblyai.com https://www.assemblyai.com they let you build a custom audio model. One challenge with the audio from

It might be worth checking out https://www.assemblyai.com https://www.assemblyai.com they let you build a custom audio model. One challenge with the audio from these radios is that it goes through some heavy compression. Traditional models will have a lot of challenges. Give a system that uses analog audio a try. The quality of the audio is a lot better.