Mahoning County

[jrl44430]

Anyone know what the weekly series of high speed touch tones on VHF are for? Programming something?

 

[kf8yk]

Which frequency? Two guesses are outdoor warning siren control or fire department Knox Box testing.

 

[jrl44430]

The old EMA frequency 155.0250 PL173.8.

 

[kf8yk]

The DB shows:

155.025

WNHM412

RM

173.8 PL

HAZMAT/EMA

Haz-Mat/EMA/Outdoor Warning Siren

So outdoor warning siren control & monitoring seems likely.

 

[jrl44430]

Thanks

 

[DS506]

Is it noon on Saturday? That is when the EMA tests the sirens.

 

[jrl44430]

It seems to be mornings around 9 every Monday.

 

[kf8yk]

Keep in mind that most modern siren controllers have monitoring & control functions that don't necessarily result in the siren sounding.

The sirens around here conduct a daily communications check and immediately report any alarm conditions over the radio link.