Wednesday 23 October 2013

Frequency Bands used in Commercial Broadcasting



CHANNELS
FREQUENCY RANGE
WAVELENGTH RANGE
AM
107
535 ` 1605 kHz
186.92 ` 560.75 m
TV
2-4
54 ` 72 MHz
4.17 ~5.56 m

5-6
76 ` 88 MHz
3.41 ~3.95 m
FM
100
88 ` 108 MHz
2.78 ~3.41 m
TV
7-13
174 ` 216 MHz
1.39 ~1.72 m

14-83
470 ` 890 MHz
33.7 ~63.83 cm

Friday 4 October 2013

Microwave Frequency Band designation


Frequency Band
Old
(Still widely used)
New
(Not so commonly used)
500~1000 MHz
UHF
C
1~2 GHz
L
D
2~4 GHz
S
E
3~4 GHz
S
F
4~6 GHz
C
G
6~8 GHz
C
H
8~10 GHz
X
I
10~12.4 GHz
X
J
12.4~18 GHz
Ku
J
18~20 GHz
K
J
20~26.5 GHz
K
K
26.5~40 GHz
Ka
K

IEEE Frequency Band designations


Band Designation
Frequency Range
‘f’
Wavelength range (in space)
‘λ’
VLF (Very Low Frequency)
3~30kHz
10~100km
LF (Low Frequency)
30~300kHz
1~10km
MF (Medium Frequency)
300~3000kHz
100~1000m
HF (High Frequency)
3~30MHz
10~100m
VHF (Very High Frequency)
30~300MHz
1~10m
UHF (Ultra High Frequency)
300~3000MHz
10~100cm
SHF(Super High Frequency)
3~30GHz
1~10cm
EHF(Extremely High Frequency)
30~300GHz
0.1~1cm