Horizontal shades of blue lines
Standard Frequencies


Frequency (MHz) Typical Application Frequency (MHz) Typical Application
1.5440 DS1 18.4320 Microprocessor Clock
1.8432 Microprocessor Clock 19.2000 Cellular
2.0480 CEPT1 19.4400 SONET
2.3040 SONET Tributaries 19.6800 Cellular
3.0880 DS1 (2X) 20.0000 DSP, Microprocessor Clock, Hub
3.1520 DS1 C 20.2750 Microprocessor Clock
3.4560 SONET Tributaries 20.4800 ISDN, CEPT1 (10X)
3.579545 US Color TV Subcarrier 22.1184 Microprocessor Clock
3.6864 Microprocessor Clock 23.1600 DS1 (15X)
4.0000 TOKEN RING, Clock 24.0000 DSP, Microprocessor Clock
4.0320 Microprocessor Clock 24.5760 CEPT1 (12X), MPEG AUDIO
4.0960 CEPT1 (2X) 24.7040 DS1 (16X)
4.4336 European TV 25.0000 DSP, Microprocessor Clock, Hub
5.0000 Microprocessor Clock 26.6600 DSP, Microprocessor Clock, Hub
5.0688 Microprocessor Clock 27.0000 DIGITAL TV, MPEG Video
6.1440 CEPT1 (3X) 27.0000 DSP, Microprocessor Clock, Hub
6.1760 DS1 (4X) 28.0000 DSP, Microprocessor Clock, Hub
6.3120 DS2 28.2240 56K Modem
6.4000 ISDN 29.0000 DSP, Microprocessor Clock, Hub
6.9120 SONET Tributaries 29.4912 V.34 Modem
7.3728 Microprocessor Clock 30.0000 DSP, Microprocessor Clock, Hub
8.0000 Microprocessor Clock 30.8800 DS1 (20X)
8.0640 Microprocessor Clock 32.0000 DSP, Microprocessor Clock, Hub
8.1920 CEPT1 (4X) 32.0640 DS3-Japan
8.4480 CEPT2 32.7680 CEPT1 (16X)
9.2160 Microprocessor Clock 33.3330 Ethernet, LAN
10.0000 Microprocessor Clock 34.3680 CEPT3
10.7000 TV 35.3280 CEPT1 (17.25X)
11.0592 Microprocessor Clock 36.0000 DSP, Microprocessor Clock, Hub
12.0000 Microprocessor Clock 36.8640 CEPT1 (18X)
12.2880 CEPT1 (6X), MPEG 37.0560 DS1 (24X)
12.3520 DS1 (8X) 38.8800 SONET
12.5000 Microprocessor Clock 40.0000 DSP, Microprocessor Clock, Hub
12.6240 DS2 (2X) 44.2360 V.34 Modem
12.8000 CEPT1 (6.25X) 44.7360 DS3
13.0000 Cellular 48.0000 DSP, Microprocessor Clock, Hub
13.5000 DIGITAL TV 49.1520 CEPT1 (24X)
14.0000 Microprocessor Clock 50.0000 DSP, Microprocessor Clock, Hub
14.31818 Microprocessor Clock 51.8400 SONET OC-1
14.3360 CEPT1 (7X) 56.4480 56K Modem
14.4000 Cellular 60.0000 SCSI
14.7456 Microprocessor Clock 66.0000 DSP, Microprocessor Clock, Hub
15.0000 Microprocessor Clock 66.6660 DSP, Microprocessor Clock, Hub
15.3600 CEPT1 (7.5X) 66.6670 DSP, Microprocessor Clock, Hub
15.4400 DS1 (10X) 77.7600 SONET
16.0000 TOKEN RING, DSP Clock 80.0000 DSP, Microprocessor Clock, Hub
16.1280 Microprocessor Clock 100.0000 DSP, Microprocessor Clock, Hub
16.3840 CEPT1 (8X) 106.2500 FDDI (Fiber Channel)
16.9344 VIDEO 125.0000 FDDI (Fiber Channel)
17.7345 European TV 155.5200 SONET OC-3, SDH STM1