Definitely a good idea; I've been intending to add such an ability to the keyset settings dialog for a while now. Certainly the duty cycle value is easy to play with; the carrier frequency would require a bit more care to get right, but would probably provide greater potential improvements to compatibility.

My apologies for not getting any updates out recently, I've been kinda swamped by "real life" issues. I'll hopefully get back to regular Pierogi work soon...