[snowmoer]

I doubt anything can be done. The european radio uses a different frequency range for radio then in the US. The tuner in the radio is set up for these. If the circuit board is separate from the intercom board, then you could switch out just the intercom board from the US radio to your UK radio. I doubt they are, as they would be using the same circuits for sound amplification and other functions. Hopefully someone with in depth knowledge of the inner working of these radios will see this.