In the past I had a BCoFD low band which i programmed 1500hz/800hz warble tone to open the pager for the obvious reason a box alarm or rescue box. I am now helping out a friend and he has asked for Balto.City fire dispatch 154.415 to be programmed in his Minitor 4 VHF to alert for the same , the warble tone. Is Balto.City Fire's warble the same HZ as BCoFD's or are there some slight variances in HZ's ?