A friend of mine, PA0ETE, might have a few used TETRA transceivers available. This is the same system (minus encryption) as the one being used by the Dutch police, ambulances and fire departments. Yes, the same digital system which failed on numerous occasions.
I’m not sure which models John got his hands on, but it could be something like in the picture at the right.
Initially TETRA started life in 1989 as Mobile Digital TRunked Radio System (MDTRS). In the early 90’s the project name changed to Trans European Trunked Radio (TETRA) however in the mid 90’s the meaning of the TETRA acronym changed to TErrestrial Trunked RAdio, as global market potential became apparent.
TETRA was developed by the European Telecommunications Standards Institute (ETSI). Wow. Developed by the same continent which created the Euro. What can possibly go wrong?