Not a ham operator, but I'd assume that a transmitter like this will emit a significant amount of noise across the RF spectrum (also, make sure to check your local laws before transmitting in potentially reserved frequency bands, e.g. with the FCC [0], or the Bundesnetzagentur in Germany [1]).
Other than that, looks like a fun little project!
[0]: https://www.fcc.gov/engineering-technology/policy-and-rules-... [1]: https://www.bundesnetzagentur.de/SharedDocs/Downloads/DE/Sac...