What's the frequency?

Click here to go to our page on biological effects of electromagnetic radiation

Click here to go to our frequency letter band page

Click here to go to our page on frequency meters

Here we will answer the question, "what's the frequency?" for about anything you can think of. Except stuff that's classified of course!

In 1986, an assailant knocked Dan Rather to the ground in Manhattan and kicked him repeatedly while asking "what's the frequency, Kenneth?" If only Dan had studied this web page, he could have supplied an answer.

What\'s the Frequency

Who would do such a thing? And why? No one knew until over 10 years later. In 1997, a psychiatrist was interviewing William Tager, who was in jail at the time for killing an NBC stagehand. According to the psychiatrist, Tager blamed news media for beaming signals into his head and thought that if he could just find out the correct frequency, he could block those signals. Though we don't know whether Tager confessed or not, Dan Rather positively identified Tager as the mystery assailant. R.E.M. later sang a pop song about the incident!

What's the Frequency Kenneth? by R.E.M.

And now back to the subject at hand...

Some of the information below came from Philips (now NXP, or is in Ampleon?), from their downloadable "RF Manual", which we highly recommend that you check out. In 2015, Hossein helped us track down the latest version, which is the 18th edition, but we must warn you there are no guarantees that the links below will be permanent. If the link is broken, send us an email and we will chase it down.

The NXP (may its soul rest in peace) manual link on page “What's the frequency?” is outdated. Apparently the last version from NXP is 18th which can be found here and a version from AMPLEON here.

Here's an article on a television that has sent out an international distress signal.

For exact television channel frequencies, check out this table.

System Frequency range
RFID systems 125 to 134 kHz
13.56 MHz
UHF (400 to 930 MHz)
2.45 GHz
5.8 GHz
AM radio (United States) 535 kHz to 1.7 MHz
Short wave radio 5.9 to 26.1 MHz
Citizen's band (CB) radio (40 channels) 26.96 to 27.41 MHz
Radio controlled airplanes 27.255 MHz (shared with CB channel 23)
Broadcast television channels 2-6 54 to 88 MHz
FM radio 88 to 108 MHz
Broadcast television, channels 7-13 174 to 220 MHz
Garage door openers, alarms ~40 MHz
Cordless analog phones 40-50 MHz
Baby monitors 49 MHz
Radio controlled airplanes ~72 MHz
Radio controlled cars ~75 MHz
Remote keyless entry (RKE) systems, tire pressure monitoring systems (TPMS) 315 or 433 MHz
UHF television (channels 14-83) 470 to 890 MHz
Wildlife tracking collars, bank money dye packs (thanks Chris!) not a frequency you want to transmit... 215 to 220 MHz
Personal Locator Beacons and other emergency beacons. Thanks to Hiker Jim! 406 MHz
Cordless phones 864 to 868 MHz
944 to 948 MHz
Industrial, medical & scientific (ISM) band Europe including RFID 866-870MHz
Cell phones (GSM) 824 to 960 MHz
Industrial, medical & scientific (ISM) band United States including RFID 902 to 928 MHz
Air traffic control radar 960 to 1215 MHz
Global positioning system (GPS) 1227.6 MHz (L2 band, 20 MHz wide)
1575.42 MHz (L1 band, 20 MHz wide)
Globalstar satellite phone downlink
Globalstar satellite phone uplink
2483.5 to 2500 MHz
1610 to 1626.5 MHz
Cell phones (GSM) 1710 to 1990 MHz
Digital cordless phones 1880 to 1900 MHz
Personal handy phone system (PHS) 1895 to 1918 MHz
Deep space radio communications: 2290 to 2300 MHz
Industrial, medical & scientific (ISM) band 2400 to 2483.5 MHz
Shared wireless data protocols (Bluetooth, 802.11b): 2402 to 2495 MHz
Microwave ovens 2450 MHz
Satellite radio downlink
XM Satellite
Sirius Satellite
2330 to 2345 MHz
2332.50 to 2,345.00 MHz
2320.00 to 2,332.50 MHz
Clear (Sprint) 4G 2.5 to 2.6 GHz
Radio altimeters 4.2 to 4.4 GHz
802.11a wireless local area network (WLAN) 5.15 to 5.25 GHz (lower band)
5.25 to 5.35 GHz (middle band)
5.725 to 5.825 (upper band)
Industrial, medical & scientific (ISM) band 5.725 to 5.85 GHz
Satellite radio uplink 7.050 to 7.075 GHz
Police radar 10.525 GHz (X-band)
24.150 (K-band)
33.4 to 36 GHz (Ka-band)
Direct broadcast satellite TV downlink (Europe) 11.7 to 12.5 GHz
Direct broadcast satellite TV downlink (US)
for example, Echostar's Dish Network
12.2 to 12.7 GHz
Satellite Transmission uplink (news trucks, etc) in United States (thanks Chris!) 14-14.5 GHz
Automotive radar, distance sensors 24 GHz
Unlicensed wireless GigaBit, ("WiGig", a portmanteau). Gibabit Wireless Alliance is covered by IEEE802.11ac standard. 57 to 64 GHz
Automotive radar, adaptive cruise control 76 to 77 GHz
E-band (new FCC-approved ultra-high speed data communications band) 71 to 76 GHz, 81 to 86 GHz and 92 to 95 GHz
The so-called "pain ray" 94 GHz

If you have any information on frequencies that we are missing, please send it to us!

Atmospheric attenuation

Content moved here.


Author : Unknown Editor