dittrimd said:
Our PL tone is 179.9 and for some reason even when we are on PL you are still getting into our system. Not as clear when we are off PL but it is still breaking squelch. It seems to follow atmospheric disturbances but it will be good to know when you are planning to suspend your 33.44 transmission.
If I had money to bet with, I'd bet what you are hearing has nothing to do with atmospherics and has everything to do with a slight 60 Hz hum in the Paramus base station (probably an older base). Something is imposing a 60 Hz hum onto the transmitted audio. Generally two sources: a power supply problem, or audio network problem (usually one side of what should be a balanced control line shorted to ground).
Two PLs that are extremely susceptible to opening to 60 Hz hum are 118.8 Hz - very close to 120 Hz, the second harmonic of 60 Hz, AND 179.9 Hz - very close to 180.0 Hz, the third harmonic of 60 Hz. The 0.2 and 0.1 Hz difference is not enough to exclude falsing.
Two courses of action - address what may be a problem in the base that is superimposing 60 Hz on its audio output, or change the PL of the receiving station to something else. Those tones will always predispose you to receiving noise from distant stations and eventually BPL.