Remote Control Airplanes
HAM Radio
Commercial Radio
ISM
 industrial-scientific-medical frequency band
Wireless Internet
Bluetooth
   Wi-Fi   
Television
Miscellaneous

27 MHZ
Air and Land Use

Ch Freq
A1 26.995
A2 27.045
A3 27.095
A4 27.145
A5 27.195
A6 27.255

50 MHZ
FCC License Required
Ch Freq
00 50.800
01 50.820
02 50.840
03 50.860
04 50.880
05 50.900
06 50.920
07 50.940
08 50.960
09 50.980
72 MHZ
Aircraft Only
Ch Freq
11 72.010
12 72.030
13 72.050
14 72.070
15 72.090
16 72.110
17 72.130
18 72.150
19 72.170
20 72.190
21 72.210
22 72.230
23 72.250
24 72.270
25 72.290
26 72.310
27 72.330
28 72.350
29 72.370
30 72.390
31 72.410
32 72.430
33 72.450
34 72.470
35 72.490
36 72.510
37 72.530
38 72.550
39 72.570
40 72.590
41 72.610
42 72.630
43 72.650
44 72.670
45 72.690
46 72.710
47 72.730
48 72.750
49 72.770
50 72.790
51 72.810
52 72.830
53 72.850
54 72.870
55 72.890
56 72.910
57 72.930
58 72.950
59 72.970
60 72.990

75 MHZ
Land Use Only
Ch Freq
61 75.410
62 75.430
63 75.450
64 75.470
65 75.490
66 75.510
67 75.530
68 75.550
69 75.570
70 75.590
71 75.610
72 75.630
73 75.650
74 75.670
75 75.690
76 75.710
77 75.730
78 75.750
79 75.770
80 75.790
81 75.810
82 75.830
83 75.850
84 75.870
85 75.890
86 75.910
87 75.930
88 75.950
89 75.970
90 75.990
Medium Frequency (MF) (300 kHz to 3 MHz)
High Frequency (HF) (3.0 - 30.0 MHz)
Very High Frequency (VHF) (30 to 300 MHz)
Ultra High Frequency (UHF) (300 MHz to 3 GHz)
Super High Frequency (SHF) (3 to 30 GHz)
Extremely High Frequency (EHF) (30 to 300 GHz)
Through ITU (International Telecommunication Union) agreement bandwidth has been set aside for amateur transmissions. Amateurs use a variety of transmission modes, including Morse code, radio teletype, data, and voice. Specific frequency allocations are a matter of record and vary from country to country and region to region, but the frequency allocations in the USA are:

Medium Frequency (MF) (300 kHz to 3 MHz)
160 metres (1.8 - 2.0 MHz)

High Frequency (HF) (3.0 - 30.0 MHz)
80 metres (3.5 - 4.0 MHz)
60 metres
         (five USB voice channels: 5.332, 5.348, 5.368, 5.373, 5.405 MHz)
40 metres (7.0 - 7.3 MHz)
30 metres (10.100 - 10.150 MHz)
20 metres (14.000 - 14.350 MHz)
17 metres (18.068 - 18.168 MHz)
15 metres (21.000 - 21.450 MHz)
12 metres (24.890 - 24.990 MHz)
10 metres (28.0 - 29.7 MHz)

Very High Frequency (VHF) (30 to 300 MHz)
6 metres (50 - 54 MHz)
2 metres (144 - 148 MHz)
1.25 metres (222 - 225 MHz)

Ultra High Frequency (UHF) (300 MHz to 3 GHz)
70 centimetres (420 - 450 MHz)
33 centimetres (902 - 928 MHz)
23 centimeters (1.24 - 1.3 GHz)
13 centimeters (2.30 - 2.31 GHz and 2.39 - 2.45 GHz)

Super High Frequency (SHF) (3 to 30 GHz)
9 centimetres (3.3 - 3.5 GHz)
5 centimetres (5.65 - 5.925 GHz)
3 centimetres (10.0 - 10.5 GHz)
1.2 centimetres (24.00 - 24.25 GHz)

Extremely High Frequency (EHF) (30 to 300 GHz)
6 millimetres (47.0 - 47.2 GHz)
4 millimetres (75.5 - 81.0 GHz)
2.5 millimetres (119.98 - 120.02 GHz)
2 millimetres (142 - 149 GHz)
1 millimetre (241 - 250 GHz)

The ARRL has a detailed band plan (http://www.arrl.org/FandES/field/regulations/bandplan.html)
on their website. For ITU region 2, RSGB's band plan (PDF) (http://www.rsgb.org/bandplans/bandplans.pdf)
will be more definitive.
88-108 MHZ
87.5 to 108 megahertz (MHz) - also known as VHF Band II
902-928 MHz,
2400-2483 MHz,
5725-5780 MHz
Description Freq
Cordless Phone 43-50 MHz
900 MHz-2.4Ghz DSS
2400 - 2 483.5 MHz
2 layers
2402 - 2480 MHz
with 79 1-MHz RF channels
Generally, small handhelds like the palm, and most new macintosh computers use "bluetooth" as a means of exchanging data within 30 feet. It enables users to connect a wide range of computing and telecommunications devices easily and simply, without the need to buy, carry, or connect cables.

It uses the 2.4 ghz spectrum to communicate a 1 megabit connection between 2 devices for both a voice channel and a 768k data channel
The entire channel has a total capacity of 1 megabit per second (Mbps).
Headers and handshaking information consume about 20 percent of this capacity.

In the United States and Europe,
the frequency range is 2,400 to 2,483.5 MHz,
with 79 1-MHz radio frequency (RF) channels.

In practice, the range is 2,402 MHz to 2,480 MHz.
In Japan, the frequency range is 2,472 to 2,497 MHz with 23 1-MHz RF channels.

A data channel hops randomly 1,600 times per second
between the 79 (or 23) RF channels.
Each channel is divided into time slots 625 microseconds long.
A piconet has a master and up to seven slaves.
The master transmits in even time slots, slaves in odd time slots.
Packets can be up to five time slots wide.
Data in a packet can be up to 2,745 bits in length


2.4 and 5 GHz
2 channels
General Wi-Fi routers contains dual bands for transmitting the 802.11 standard across the 2.4 and 5 GHz spectrums.
VHF and UHF
VHF
The general services in the VHF band are:
30-46 MHz: Licensed 2-way land mobile communication
30-88 MHz: Military VHF-FM, including SINCGARS
46-50 MHz: Cordless telephones, "49 MHz" FM walkie-talkies, and mixed 2-way mobile communication
50-54 MHz: Amateur radio "6-meter" band
54-72 MHz: TV channels 2, 3, and 4
72-76 MHz: Remote Control devices
76-88 MHz: TV channels 5 and 6
88-108 MHz: FM broadcasting (88-92 non-commercial, 92-108 commercial)
108-118 MHZ: Air navigation beacons VOR
108-132 MHz: Air Traffic Control (AM), 121.5 MHz is emergency frequency
132-144 MHZ: Auxiliary civil services,satellite, space research, and other miscellaneous services
144-148 MHz: Amateur "2-meter" band
148-174 MHz: "VHF Business Band", the new unlicensed Multi-Use Radio Service (MURS), and other 2-way land mobile, FM
156-174 MHz VHF Marine Radio FM
162.40-162.55: NOAA Weather Stations, FM
174-216 MHz: TV channels 7 through 13, and professional wireless microphones (low power, certain exact frequencies only)
216-222 MHz: mixed services
222-225 MHz: Amateur "1-1/4-meter" band
above 225 MHz: Federal services, including military aircraft radio (225-400 MHz) AM, including HAVEQUICK

UHF
brief summary of some UHF frequency usage:
300 - 420 MHz: government use, including meteorology
420 - 450 MHz: radiolocation and Amateur "70 cm" band
450 - 470 MHz: UHF business band, GMRS, and FRS 2-way "walkie-talkies"
470 - 512 MHz: TV channels 14-20, public safety
512 - 806 MHz: TV channels 21-69 (channels 53-69 to be auctioned)
806 - 824 MHz: pocket pagers and Nextel SMR band
824 - 849 MHz: cellular phones, A & B franchises, mobile phone
849 - 869 MHz: public safety 2-way (fire, police, ambulance)
869 - 894 MHz: cellular phones, A & B franchises, base station
902 - 928 MHz: ISM band: cordless phones and stereo, datalinks
928 - 960 MHz: mixed Studio-Transmitter Links, mobile 2-way, other
1240 - 1300 MHz: Amateur radio
1850 - 1910 MHz: PCS mobile phone - note below
1930 - 1990 MHz: PCS base stations - note below note: order is A,D,B,E,F,C blocks. A,B,C = 15 MHz; D,E,F = 5 MHz
2310 - 2360 MHz: Satellite radio Sirius and XM
2390 - 2450 MHz: Amateur radio, shared with below:
2400 - 2483.5 MHz: ISM, IEEE 802.11, 802.11b, 802.11g Wireless LAN
around 2450 MHz: Microwave oven
Garage door openers, alarm systems, etc. - Around 40 megahertz
Standard cordless phones: Bands from 40 to 50 megahertz
Baby monitors: 49 megahertz
Radio controlled airplanes: Around 72 megahertz, which is different from...
Radio controlled cars: Around 75 megahertz
Wildlife tracking collars: 215 to 220 megahertz
MIR space station: 145 megahertz and 437 megahertz
Cell phones: 824 to 849 megahertz
New 900-MHz cordless phones: Obviously around 900 megahertz!
Air traffic control radar: 960 to 1,215 megahertz
Global Positioning System: 1,227 and 1,575 megahertz
Deep space radio communications: 2290 megahertz to 2300 megahertz




2003 US allocation chart

2016 US allocation chart