A year or two ago, I released a video on my siren YouTube channel (Siren Archives) about Ardmore's siren system testing schedule and the fact that the last remaining RM-130 over there was still active and working.
Just yesterday, I received a comment on that video claiming that the RM-130 has been replaced.
Since I haven't been in Ardmore for the better part of 3 years, I can't confirm whether or not this is true. I can only say that the RM-130 is or was located on top of the Ardmore Police Department building.