radio tarang

ITU radio patti number

4 5 6 7 8 9 10 11 12

ITU radio patti chinh

VLF LF MF HF VHF UHF SHF EHF

NATO radio patti

A B C D E F G H I J K L M

IEEE radaar pattiyaaain

HF VHF UHF L S C X Ku K Ka V W

रेडियो और टेलीविजन प्रसारण के लिए प्रयुक्त ऐण्टेना

radio tarangein (radio waves) ve vidyut chumbakeeya tarangein hain, jinka tarangadairghya 10 senteemeetar se 100 kimi ke beech hota hai. ye maanavanirmit bhi hoti hain aur praakrutik bhi. maanav ki koi indriya inhein pehchaan naheen sakti balki ye kisi anya takaneeki upakaran (jaise, radio sangraahi) dvaara pakadi evam anubhav ki jaateen hain. inka prayog mukhyat: bina taar ke, vaataavaran ya baahari vyom ke dvaara soochana ka aadaan pradaan ya parivhan mein hota hai. inhein anya vidyut chumbakeeya tarangon se inki tarang dairghya ke adhaar par pruthak kiya jaata hai, jo apekshaakrut adhik lambi hoti hai.


anukram

ye banti kaise hain ?

radio tarangein vidyut dhaara ko radio aavrutti par pratyaavartan karne par banti hain. yeh dhaara ek vishisht chaalak jise enteena kehte hain, se paas karaai jaati hai. iski lambaai tarang dairghya ke baraabar hi honi chaahiye, jisse ki dakshata se kaarya ho paae. atyadhik lambi tarangein praayaugik naheen hain, kyonki unke hetu atyadhik lamba enteena chaahiye, jo sambhav naheen hai. haalaanki ve bhi kabhi kabhi tadit (bijli) girte samay banti hain. radio tarangein antariksheeya prakriya se bhi banti hain, parantu ve sudoor gahan antariksh mein hi banti hain.

sancharan

chitr:3D Ionospheric Ray Example.gif
Amfm3-en-de.gif

khoj

Rough plot of Earth's atmospheric transmittance (or opacity) to various wavelengths of electromagnetic radiation, including radio waves.

vidyut chumbakeeya varnakram ka radio bhaag

inhein tarang dairghya par aadhaarit, vibhinn patteeyon (baind) mein baanta gaya hai.

patti naam Abbr ITU band aavrutti
evam
tarang dairghya
udaaharan evam prayog
< 3 Hz
> 100,000 km
atyadhik nimn aavrutti (ELF) ELF 1 3–30 Hz
100,000 km – 10,000 km
Communication with submarines
param nimn aavrutti (SLF) SLF 2 30–300 Hz
10,000 km – 1000 km
Communication with submarines
atyant nimn aavrutti (ULF) ULF 3 300–3000 Hz
1000 km – 100 km
Communication within mines
ati nimn aavrutti (VLF) VLF 4 3–30 kHz
100 km – 10 km
Submarine communication, avalanche beacons, wireless heart rate monitors, geophysics
nimn aavrutti (LF) LF 5 30–300 kHz
10 km – 1 km
Navigation, time signals, AM longwave broadcasting
madhya aavrutti (MF) MF 6 300–3000 kHz
1 km – 100 m
AM (Medium-wave) broadcasts
uchchaavrutti (HF) HF 7 3–30 MHz
100 m – 10 m
Shortwave broadcasts, amateur radio and over-the-horizon aviation communications
atyochchaavrutti (VHF) VHF 8 30–300 MHz
10 m – 1 m
FM, television broadcasts and line-of-sight ground-to-aircraft and aircraft-to-aircraft communications
atyant uchchaavrutti (UHF) UHF 9 300–3000 MHz
1 m – 100 mm
television broadcasts, microwave ovens, mobile phones, wireless LAN, Bluetooth, GPS and Two-Way Radios such as FRS and GMRS Radios
param uchchaavrutti (SHF) SHF 10 3–30 GHz
100 mm – 10 mm
microwave devices, wireless LAN, most modern Radars
atyadhik uchchaavrutti (EHF) EHF 11 30–300 GHz
10 mm – 1 mm
Radio astronomy, high-speed microwave radio relay
Above 300 GHz
< 1 mm


naamakaran ki gain aavrutti pattiyaaain

General

prasaar aavruttiyaaain:

  • deergh tarang A M radio = 148.5 - 283.5 kHz (LF)
  • madhyam tarang A M radio = 530 kHz - 1710 kHz (MF)
  • dooradarshan baind I (channel 2 - 6) = 54 MHz - 88 MHz (VHF)
  • ef M radio baind II = 88 MHz - 108 MHz (VHF)
  • dooradarshan baind III (channel 7 - 13) = 174 MHz - 216 MHz (VHF)
  • dooradarshan baind IV & V (channel 14 - 69) = 470 MHz - 806 MHz (UHF) [1]

For more information see the NTIA frequency allocation chart: http://www.ntia.doc.gov/osmhome/allochrt.html

ऍmechyor radio pattiyaaain

maanya aavruttiyon ka range vibhinn deshon mein bhinn hai.

patti aavrutti range
160 m 1.8 to 2.0 MHz
80 m 3.5 to 4.0 MHz
60 m 5.3 to 5.4 MHz
40 m 7 to 7.3 MHz
30 m 10.1 to 10.15 MHz
20 m 14 to 14.35 MHz
15 m 21 to 21.45 MHz
12 m 24.89 to 24.99 MHz
10 m 28.0 to 29.7 MHz
6 m 50 to 54 MHz
2 m 144 to 148 MHz
70 cm 430 to 440 MHz
33 cm 902 to 928 MHz
23 cm 1240 to 1300 MHz

IEEE US

patti aavrutti range naam ka mool
HF patti 3 to 30 MHz High Frequency
VHF patti 30 to 300 MHz Very High Frequency
UHF patti 300 to 3000 MHz Ultra High Frequency

Frequencies from 216 to 450 MHz were sometimes called P-band: Previous, since early British Radar used this band but later switched to higher frequencies.

L patti 1 to 2 GHz Long wave
S patti 2 to 4 GHz Short wave
C patti 4 to 8 GHz Compromise between S and X
X patti 8 to 12 GHz dviteeya vishv yuddh mein agni-shaman hetu prayog ki gayi X (jaise crosshair mein)
Ku patti 12 to 18 GHz Kurz-under
K patti 18 to 26 GHz German Kurz (short)
Ka band 26 to 40 GHz Kurz-above
V patti 40 to 75 GHz
W patti 75 to 111 GHz V ke baad W aaingreji aksharon mein

EU, NATO, US ECM frequency designations

Band Frequency range
A band 0 to 0.25 GHz
B band 0.25 to 0.5 GHz
C band 0.5 to 1.0 GHz
D band 1 to 2 GHz
E band 2 to 3 GHz
F band 3 to 4 GHz
G band 4 to 6 GHz
H band 6 to 8 GHz
I band 8 to 10 GHz
J band 10 to 20 GHz
K band 20 to 40 GHz
L band 40 to 60 GHz
M band 60 to 100 GHz

vev guide aavrutti range

Band Frequency range[1]
R band 1.70 to 2.60 GHz
D band 2.20 to 3.30 GHz
S band 2.60 to 3.95 GHz
E band 3.30 to 4.90 GHz
G band 3.95 to 5.85 GHz
F band 4.90 to 7.05 GHz
C band 5.85 to 8.20 GHz
H band 7.05 to 10.00 GHz
X band 8.2 to 12.4 GHz
Ku band 12.4 to 18.0 GHz
K band 15.0 to 26.5 GHz
Ka band 26.5 to 40.0 GHz
Q band 33 to 50 GHz
U band 40 to 60 GHz
V band 50 to 75 GHz
W band 75 to 110 GHz
Y band 325 to 500 GHz

sandarbh

radio varnakram
atyadhik nimn aavrutti (ELF) param nimn aavrutti (SLF) atyant nimn aavrutti (ULF) ati nimn aavrutti (VLF) nimn aavrutti (LF) madhyam aavrutti (MF) uchchaavrutti (HF) atyochchaavrutti (VHF) atyant uchchaavrutti (UHF) param uchchaavrutti (SHF) atyadhik uchchaavrutti (EHF)
3 Hz 30 Hz 300 Hz 3 kilo hartj 30 kilo hartj 300 kilo hartj 3 maiga hartj 30 maiga hartj 300 maiga hartj 3 geega hartj 30 geega hartj
30 Hz 300 Hz 3 kilo hartj 30 kilo hartj 300 kilo hartj 3 maiga hartj 30 maiga hartj 300 maiga hartj 3 geega hartj 30 geega hartj 300 geega hartj