The OFFICIAL site of the 
Suffolk County, Long Island, New York
Amateur Radio Emergency Services




CTCSS TONE FREQUENCIES

The purpose of CTCSS is to reduce co-channel interference during band openings. CTCSS repeaters would respond only to signals having the CTCSS tone required for that repeater. These repeaters would not respond to distant weak signals on their inputs and would not repeat those signals.

Listed are the standard Electronic Industries Association (EIA) 
frequency codes, in hertz, along with their Motorola alphanumeric designators. 

 67.0 - XZ          97.4 -  ZB            141.3 - 4A            206.5 -  8Z
 69.3 - WZ          100.0 - 1Z            146.2 - 4B            210.7 -  M2
 71.9 - XA          103.5 - 1A            151.4 - 5Z            218.1 -  M3
 74.4 - WA          107.2 - 1B            156.7 - 5A            225.7 -  M4
 77.0 - XB          110.9 - 2Z            162.2 - 5B            229.1 -  9Z
 79.7 - WB          114.8 - 2A            167.9 - 6Z            233.6 -  M5
 82.5 - YZ          118.8 - 2B            173.8 - 6A            241.8 -  M6
 85.4 - YA          123.0 - 3Z            179.9 - 6B            250.3 -  M7 
 88.5 - YB          127.3 - 3A            186.2 - 7Z            254.1 -  0Z
 91.5 - ZZ          131.8 - 3B            192.8 - 7A 
 94.8 - ZA          136.5 - 4Z            203.5 - M1

The Suffolk County R.A.C.E.S. Radio Officer is Bill Schiebel, N2NFI.
The Suffolk County A.R.E.S. District Emergency Coordinator is Bill Schiebel, N2NFI.
If you have info for or need info on A.R.E.S./ R.A.C.E.S. e-mail Bill.

Send Email to N2NFI


Webmaster: Walter Wenzel, KA2RGI
All rights are reserved and copyrighted 2004 and beyond by Suffolk County, Long Island, Amateur Radio Emergency Services.

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