You'll want to use whatever tone is unique to that department (sounds like it's the first in the sequence from what I gather). Having a radio locked on the channel is really the only reliable way to make sure you'll always pick up the tones. If you do that and use the first tone set, I think you'll be fine. The 3rd department problem can be solved by setting your Btonelength to 1.5 seconds or greater.
Andy
I've attached a .mp3 in a .zip of the 3 tones.
634-596 Hz 1.0-3.2 sec page received at 00:23:40 on 01/05/16
596-634 Hz 1.0-2.8 sec page received at 00:23:35 on 01/05/16
596-924 Hz 0.8-3.0 sec page received at 00:23:30 on 01/05/16
So my problem is I have 2 other FDs in the area.
1 uses. 596-634 as it's 2nd set
1 uses 634-596 as it's first set.
So I get false triggers for all 3 FD's when this one gets called out.
So yeah I guess I could use the first tones of 596-924 and tell it to wait 6 seconds before recording so it other tones are done. It thought allowing the program to be able to use more tones would be better it seems now.
My idea would have been
RECORD
Tone E-F 634-596 Hz 1.0-3.2 sec page received at 00:23:40 on 01/05/16
Tone C-D 596-634 Hz 1.0-2.8 sec page received at 00:23:35 on 01/05/16
Tone A-B 596-924 Hz 0.8-3.0 sec page received at 00:23:30 on 01/05/16
Or even just AB CD so you need both sets before it records.