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What are the Frequencies allotted to amateur radio service (ham radio service)?

Frequencies allocated to the Indian Amateur Radio Stations:

Category of Licence Frequency bands Emission Maximum D.C. input power unless otherwise specified
(a) Restricted Amateur Wireless Telegraph Station Licence. 144-146 MHz A3E, H3E, J3E, R3E, F3E 10 Watts (terrestrial service only authorised)
(b) Amateur Wireless Telegraph Station Licence Grade II. 1820-1860 kHz*
3500-3700 kHz
3890-3900 kHz
7000-7100 kHz
14000-14350 kHz
18068-18168 kHz $
21000-21450 kHz
24890-24990 kHz $
28000-29700 kHz
144-146 MHz
434-438 MHz @
A1A, A3E, H3E, J3E, R3E
A1A, A2A, A3E, H3E, R3E, J3E, F1B, F2A, F3E
50 Watts
10 Watts (terrestrial service only authorised)
(b) Amateur Wireless Telegraph Station Licence Grade I. 1820-1860 kHz*
3500-3700 kHz
3890-3900 kHz
7000-7100 kHz
14000-14350 kHz
18068-18168 kHz $
21000-21450 kHz
24890-24990 kHz $
28000-29700 kHz
144-146 MHz
434-438 MHz @
434-438 @
1260-1300 MHz@
3300-3400 MHz
5725-5840@
A1A, A2A, A3E, H3E, R3E, J3E, F1B, F2A, F3E,
F3C, A3C, A3F

-do-
150 Watts**
25 Watts for terrestrial service. Amateur Satellite Service is permitted in the appropriate sub-bands in accordance with the Radio Regulations and in those cases  the maximum output RF power (e.i.r.p.) is 30 dbw( Grade-I licence holders)
50 Watts for Advanced Grade Licence holder

**The Advanced Grade Licence holder can use 400 watts of power in the following bands
3520-3540 kHz
3890-3900 kHz
7050-7100 kHz
14050-14150 kHz
14220-14320 kHz
21100-21400 kHz
* On primary shared basis as per the relevant provisions of Radio Regulations.
$ The authorization is on non-interference and non-protection basis.
@ On secondary basis as per the relevant provisions of Radio Regulations.
& 1260-1270 MHz for Earth to Space Satellite Service only

US AMATEUR BANDS
160 METERS (1800 KHz - 2000 KHz)
80 METERS (3500 - 4000)
40 METERS (7000 - 7300)
30 METERS (10,100 - 10,150)
20 METERS (14,000 - 14,350)
17 METERS (18,068 - 18,168)
15 METERS (21,000 - 21,450)
12 METERS (24,890 - 24,990)
10 METERS (28,000 - 29,700)
6 METERS (50.O MHz - 54.0 MHz)
2 METERS (144 - 148)
1.25 METERS (222.0 - 225.0)
70 CENTIMETERS (420.0 - 450.0)
33 CENTIMETERS (902.0 - 928.0)
23 CENTIMETERS (1240 - 1300)
Above 23 Centimeters :-
2300 - 2310 MHz
2390 - 2450
3300 - 3500
5650 - 5925
10.0 - 10.5 GHz
24.0 - 24.25 47.0 - 47.2
75.5 - 81.0
119.98 - 120.2
142 - 149
241 - 250
All abnove 300 GHz

If you compare the frequency allocation to the US and the Indian amateur radio operators, you will notice that the Indian amateur radio operators have miles to go!