If you are converting vintage radios to FrSky, these Dashboards that have been out of production for a long time will allow you access to more of the telemetry. They are not a perfect solution, but they are abot the only solution. Anyhow, FrSky contacted me about some discontinued items they would like me to buy, and they have a stash of these. I don't know how many, but will be buying all they have. I have not been able to source these for years.