An astro modulator was a device built by Professor Mirko Vetich and the Third Doctor to disrupt Zex's control of Mrs Prentice. It was a success and Zex was banished, freeing Prentice. (PROSE: Listen - The Stars)
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An astro modulator was a device built by Professor Mirko Vetich and the Third Doctor to disrupt Zex's control of Mrs Prentice. It was a success and Zex was banished, freeing Prentice. (PROSE: Listen - The Stars)