Hamilton CO FTO's

milf

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Dec 18, 2002
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I have begun logging and will be attempting to ID the Tones in use for the various FD/EMS in Hamilton Co.
So far I have:
A: B:
929.9 931.8
600.3 599.2
600.8 930.2
599.2 931.5
598.3 930.8
789.4 1186.3
 

IndyScan

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Dec 19, 2002
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Fishers, IN
Thanks for this! Just ordered a SDS100 (backordered) & getting back in to the hobby after a long absence (used to run IndyScan.com & donated all my Indiana info to RR back in the day). This was the first project I was going to work on. As soon as I get my radio & some codes I'll be sure to share.
 

IndyScan

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Fishers, IN
Good morning! Finally received the SDS100 on Monday & have been playing with it ever since.

I've setup the FTO search on the 154.010 frequency used here but I've run into an issue. It took me a minute to figure it out but the numbers didn't look right.

We have a lot of departments that tone out with a low/high tone but the logs had just the opposite. I.E. A-2175.1 B-598.0. After running the search overnight I have about 90 entries. Most have the A-Tone as 2175 which is just not right. Turns out there is a high pitched tone on the Simulcast to 154.010 & I think thats tricking the scenery. I'm hoping a filter setting might help but wanted to start here & ask for suggestions.

My old GP-300 that's been used to exclusively (for years) listen to 154.010 has that same high pitched tone. Guess I just got used to it!

Of the ones that seemed to work I have (I listened to the recording & typed this up my hand, please excuse any typos):

86759

The rest of them look like this:

86760
 

moto25usr

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4
STATIONFIRST TONEFIRST TONEGAPSECOND TONESECOND TONE
FREQUENCYDURATIONDURATIONFREQUENCYDURATION
ATLANTA STATION 51788.51 SECOND.25 SECOND470.53 SECONDS
CARMEL ALL CALL600.91 SECOND.25 SECOND569.13 SECONDS
CARMEL STATION 41600.91 SECOND.25 SECOND928.13 SECONDS
CARMEL STATION 42600.91 SECOND.25 SECOND669.93 SECONDS
CARMEL STATION 43600.91 SECOND.25 SECOND707.33 SECONDS
CARMEL STATION 44600.91 SECOND.25 SECOND746.83 SECONDS
CARMEL STATION 45600.91 SECOND.25 SECOND788.53 SECONDS
CARMEL STATION 46600.91 SECOND.25 SECOND832.53 SECONDS
CARMEL STAFF600.91 SECOND.25 SECOND1092.43 SECONDS
CICERO STATION 21584.81 SECOND.25 SECOND617.43 SECONDS
FISHERS ALL CALL922.51 SECOND.25 SECOND802.53 SECONDS
FISHERS STATION 91922.51 SECOND.25 SECOND682.53 SECONDS
FISHERS STATION 92922.51 SECOND.25 SECOND757.53 SECONDS
FISHERS STATION 93922.51 SECOND.25 SECOND847.53 SECONDS
FISHERS STATION 94922.51 SECOND.25 SECOND727.53 SECONDS
FISHERS STATION 95922.51 SECOND.25 SECOND547.53 SECONDS
FISHERS STATION 96922.51 SECOND.25 SECOND892.53 SECONDS
FISHERS STATION 97922.51 SECOND.25 SECOND937.53 SECONDS
FISHERS STAFF922.51 SECOND.25 SECOND592.53 SECONDS
JACKSON STATION 55496.81 SECOND.25 SECOND321.73 SECONDS
NOBLESVILLE ALL CALL1395.08 SECONDS
NOBLESVILLE STATION 711395.01 SECOND.25 SECOND1153.43 SECONDS
NOBLESVILLE STATION 721395.01 SECOND.25 SECOND1251.43 SECONDS
NOBLESVILLE STATION 731395.01 SECOND.25 SECOND903.23 SECONDS
NOBLESVILLE STATION 741395.01 SECOND.25 SECOND810.23 SECONDS
NOBLESVILLE STATION 751395.01 SECOND.25 SECOND726.83 SECONDS
NOBLESVILLE STATION 761395.01 SECOND.25 SECOND651.93 SECONDS
NOBLESVILLE STATION 771395.01 SECOND.25 SECOND979.93 SECONDS
NOBLESVILLE WEATHER1321.01 SECOND.25 SECOND1358.03 SECONDS
SHERIDAN STATION 61350.01 SECOND.25 SECOND470.53 SECONDS
WAYNE STATION 15788.51 SECOND.25 SECOND1185.23 SECONDS
WESTFIELD ALL CALL517.51 SECOND.25 SECOND682.53 SECONDS
WESTFIELD STATION 81517.51 SECOND.25 SECOND592.53 SECONDS
WESTFIELD STATION 82517.51 SECOND.25 SECOND757.53 SECONDS
WESTFIELD STATION 83517.51 SECOND.25 SECOND802.53 SECONDS
WESTFIELD STATION 84517.51 SECOND.25 SECOND847.53 SECONDS
WHITERIVER STATION 31651.91 SECOND.25 SECOND584.83 SECONDS

This is what they were in Aug 2019. Not sure if changes have been made, especially to the volunteers. However we were using a call alert function to each station for the "Big four" and a generic two tone, a low/high combo, which is basically what IndyScan has documented. If memory serves me right, 597.8/932ish would be the default/generic tone for the career departments.

Now that they are taxing people for 911 services, I wouldn't be surprised if they don't move to an automated dispatch program of some sorts. In 2018/2019, we had vetted numerous vendors and Purvis was the recommended vendor due to their cost, support, and customization. The "new" administration decided all of that work wasn't good enough and wanted to start over. Months of hard work tossed down the drain.
 
Joined
Apr 30, 2008
Messages
791
2175 Hz is the guard tone used when sending audio over a tone remote system. It starts out at a higher level for 120 ms and then drops to 30 dB below the high level during the time audio is being sent to the transmitter. This is used to prevent a stuck PTT on the xmtr.
 

IndyScan

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Fishers, IN
Nice update, thanks for posting! Those automated systems are weird. It's always nice hearing the personality of the dispatcher.
 
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