WA Radio Scanner Users' Group

Hi I am new to the group.
The differance in the call sign is bush fire brigades (B.W.T. Big White Trucks) use 6IP and FRS (B.R.T. Big Red Trucks) use 6AR. They are differant radio chs and ctcss tones. They became linked together when FRS took over the comm center for both Fire Services.
See Ya