Since I had my Model 1 out for Independence Day I decided to go ahead and run it for a test last week. I stood out in the front yard to hear the county's system and activated it via the RF setup connected to the AF timer controlling the siren accordingly. The 450 Hz controller on the siren on St. Marys Rd. was replaced and now peaks at the usual 435 Hz.
https://www.youtube.com/watch?v=0PJ1ynRW9XY