Standard Tone Burst Frequencies

         1800 Hz   1950 Hz    2100 Hz   2250 Hz    2400 Hz
         1900 Hz   2000 Hz    2200 Hz   2300 Hz

Standard DTMF Frequencies

         Low group:    697 Hz           High Group:    1209 Hz
                       770 Hz                           1336 Hz
                       852 Hz                           1477 Hz
                       941 Hz                           1633 Hz

         Deviation:  3kHz, +/- 1 kHz

Suggested ID Tone Frequency:

           1020 Hz (same as FAA ID tones)
           (NOAA/NWS Standard Alert Tone Frequency:  1050 Hz)

Standard Continuous Tone-Coded Subaudible Squelch Frequencies

     Freq. EIA      Freq. EIA      Freq. EIA      Freq. EIA

     Hz   CODE     Hz   CODE     Hz   CODE     Hz   CODE
     -----------     -----------     -----------     -----------
     67.0  XZ       91.5 ZZ       118.8 2B       156.7 5A
     71.9  XA       94.8 ZA       123.0 3Z       162.2 5B
     74.4  WA       97.4 ZB       127.3 3A       167.9 6Z
     77.0  XB       100.0 1Z       131.8 3B       173.8 6A
     79.7  SP       103.5 1A       136.5 4Z       179.9 6B
     82.5  YZ       107.2 1B       141.3 4A       186.2 7Z
     85.4  YA       110.9 2Z       146.2 4B       192.8 7A
     88.5  YB       114.8 2A       151.4 5Z       203.5 M1

     Deviation:  300 Hz minimum, 750 Hz maximum
     Bandwidth:  +/- 2%; -30 to +60 degrees C, +25 C reference

(The above tones are supported by t he Communications Specialists programmable encoder/decoders.)

Audio Deviation

               4.5 kHz Maximum (Including PL Tone)

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