decode tones

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ob123

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a

Ok, what i do is hook up my scanner to my computer and record the fire traffic on to a program audacity beta 1.3 , then after a tone goes out, I go to anylize and plot spectrume to find out the hertz.....but it just so happens i live near monmouth.... what do u need?

Now, the p13 is on your minitor ii I am guessing? That is the third tone reed(tone C)..... most of the time thought, you will not use tone C. P13 stands for plectron tone # 13..... and the hertz for that is 1082.0hz.

Thanks, any questions, i will try to answer...
 

pdfdems286

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countryboy.keep in mind i'm not an expert,but i do know some about tone's.
usually most public safety pager's are 2 tone sequntial.there are some that are 3 tone i believe.i think camden county may use some 3 tone format's <?>.i also believe that there are a few single tone.i think freehold boro.may have a single tone format.in 2 tone,the first reed or tone is the "setup" tone and the second one is the "kicker" tone.the siren or beep's at the end don't need to be set off by a tone.i think they are just part of the paging format.however,some town's whistle's or horn's can be set off by a 2 tone paging format also.please,if i'm wrong someone enlighten me.i could alway's use learning more about radio.
 

ob123

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In my case, when my towns fd gets a test, tone A and B go out, but not tone C. You see tone A and B will set off my pager, but tone C will set off the town siren, and open the bay doors. In most cases though, you will only need tone A and B.

Now for the siren that wistles at the end of the page: it is very difficult to make that siren, and has nothing to do with activating the pagers.....so no need to worry about that...
 

ob123

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Lol.....nah..... I am saying that there is no specific hertz to make it.

I might have the siren recorded though if you want it...
 
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