YL in HAM world

VU2YAM

http://www.niar.org/Aila%20Report.pdf

ASOC - Qn papers

             GOVERNMENT OF INDIA
              MINISTRY OF COMMUNICATIONS
            MONITORING ORGANIZATION
                * * * * * * * *

    NOTE: Question No 1 from each section is compulsory.
    Grade I    answer any 5 of the remaining questions - 2 Hours
    Grade II answer any 2 of the remaining questions - 1 Hour

    SECTION A

    Q.1.    Choose the correct answer ( any 10 )

    i)    A3E indicates a) SSB b) AM-DSB voice c) FM Voice d) FSK

    ii)    Capacitance is measured in
        a) Amperes b) watt c) Farad d) Coulombs

    iii)    Frequency is a) cycles per second b) Kilo cycles
        per second c) Cycles per minute d) cycles per hour

    iv)    Line of sight propagation is the mode of communication
        in a) LF b) HF c) MF d) VHF

    v)    The wavelength of 300 MHz is in Meters is
        a) 1 b) .1 c) 1.1 d) 0.01

    vi)    4th harmonic of 2.5 MHz is
        a) 10 MHz b) 15 MHz c) 8 MHz d) 7.5 MHz

    vii)    Squelch control is used to eliminate
        a) static interference b) electrical disturbance
        c) receiver noise d) unwanted carrier

    viii)    Resonant frequency in a tuned circuit is equal to
        a) 1/2ãLC b) 1/2ãûLC c) 2ãûLC d) 2ãûL+C

    ix)    Power dissipated in a 400 Ohm resistor at 1 Amp is
        a) 40 Watts b) 400 KW c) 4 Watts d) 400 Watts

    x)    The frequency of 40 Meter band in MHz is
        a) 14 - 14.350    b) 7 - 7.1 c) 21 - 21.450 d) 15 - 15.400

    xi)    Zener diode is used for a) Rectification b) Voltage
        regulation c) Current regulation d) Switching

    xii)    The UHF range is a) 30 to 300 KHz b) 300 to 3000 KHz
        c) 3 to 30 GHz d) 300 to 3000 MHz

    Q.2    Write short notes on any three    a) Skip distance
        b) AVC c) eddy currents d) Antenna matching

    Q.3    Draw the circuit of a full wave bridge rectifier with
        and smoothing circuit and explain its function.

    Q.4    a) Explain briefly FM and its advantages over AM
        b) Explain briefly dipole aerial

    Q.5    Draw the block diagram of a superhetrodyne receiver
        and explain the function of each stage briefly.

    Q.6    Explain briefly primary cell and secondary cell and
        how do they differ ?

    Q.7    State the color code of resistors

    SECTION B

    Q.1.    Choose the correct answer ( any 10 )

    i)    Indian amateurs can communicate with other amateurs in
        a) All countries b) Countries permitted by ITU
        c) Countries permitted by Indian Government
        d) Countries permitted by Indian Amateur society

    ii)    Grade II amateurs can communicate on 7 MHz in
        a) A1 b) A3 c) F3 d) A3A

    iii)    Lady amateurs are known as a) XL b) XYL c) YL d) LY

    iv)    Minimum age to become an amateur is
        a) 18 years b) 14 years c) 12 years d) 16 years

    v)    All timing in the Log book should be in
        a) IST b) UTC c) GMT d) Local time

    vi)    Amateurs should preserve their log for a period of
        a) 6 months b) 1 year c) 2 years d) 9 months from the
        date of the last entry

    vii)    Q code to indicate time is a) QRG b) QRX c) QTR d) QSA

    viii)    Test signal shall not be continued more than
        a) 30 seconds b) 1 minute c) 2 minutes d) 3 minutes

    ix)    In India the standard time signal is broadcast by
        a) ISRO b) WPC c) OCS d) NPL

    x)    PANPAN transmitted thrice indicates a) Distress
        b) Emergency c) Urgency d) Distress and emergency

    xi)    The broadcast of music is allowed in amateur service
        a) on request b) when channel is free c) never
        d) only for testing
                 __
    xii)    The abbreviation VA means a) End of transmission
        b) End of message c) End of working d) End of schedule


    Q.2    State the conditions under which an amateur station
        can transmit third party messages ?

    Q.3    Write the meaning of four of the following i) QRA
        ii) QRL iii) QRX 1600    iv) QRM v) QSY

    Q.4    What are the international distress frequencies and
        write a specimen form of a distress message in A3.

    Q.5a.    Explain the need for a callsign ? How are the callsigns
        for amateurs in India formed ?
      5b.    Who allots callsigns for amateurs in India ?

    Q.6    On May 27 1986 Tuesday presume you had a contact
        Sri Vidyaprakash of Coimbatore on 14025 KHz signing
        VU2DVP at 2130 IST with good signal strength, tone and
        readability. Convey your particulars to him before
        closing down. Show the above contact in proper log form.

    Q.7    What types of messages are the amateurs forbidden to
        transmit ?



HAM Fest India -2011 @ KOCHI

http://www.hamfestindia2011.com/

Amateur Radio _revised Guidelines

The revised guidelines and clarification in the context of Indian Wireless Telegraph(Amateur Service) Amendment Rules,2009 dated 1st April and Indian Wireless Telegraph(Amateur Service) Amendment Rules 2005 dated 9th June 2005

Circular dated 13-08-2010

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Channel Assignments

The channel assignments in India are different from the bandplans used elsewhere. The Indian bandplan consists of 40 frequencies spaced a relatively tight eight kHz apart, plus a few offset channels used for mountaineering and radio-controlled devices. Also, many of the channels are reserved for specific purposes such as forestry, disaster relief, and sporting events. For More Info Visit http://www.wpc.dot.gov.in/

Indian CB channels

Frequency	Usage
26.964	Hobbyist comms
26.968 [offset]	Mountaineering
26.972	Hobbyist comms
26.976 [offset]	Mountaineering
26.980	Highway comms
26.988	spare
26.996	spare
27.004	Radio-controlled model aircraft
27.012	Rural comms
27.020	Radio-controlled devices, ex. garage door openers, alarms
27.028	Rural comms
27.036	Hobbyist comms
27.044	Highway emergency ( to contact police )
27.052	Highway emergency ( to contact EMS )
27.060	Marine lifesaving comms
27.068	Marine lifesaving comms
27.076	Disaster relief
27.084	Disaster relief
27.092	Forestry
27.100	Forestry
27.108	Radio-controlled devices, ex. garage door openers, alarms
27.116	Radio-controlled model aircraft
27.124	Hobbyist comms
27.132	spare
27.140	Mountaineering
27.148	Radio-controlled model aircraft
27.155 [offset]	Radio-controlled models, general
27.156	Radio-controlled model aircraft
27.164	spare
27.172	Rural comms
27.180	spare
27.188	spare
27.196	spare
27.204	Mountaineering
27.212	Rural comms
27.220	Sports events
27.225 [offset]	Radio-controlled models, general
27.228	Radio-controlled model aircraft
27.236	Highway comms
27.244	Sports events
27.250 [offset]	Radio-controlled toys and gadgets
27.252	spare
27.260	Radio-controlled toys and gadgets
27.268	spare
27.276	spare

Amateur radio, often called ham radio, is a service that uses various types of radio communications equipment to communicate with other radio amateurs for public service, recreation and self-training. A participant is called an amateur radio operator, or a ham.

Amateur radio operators have personal wireless communications with friends, family members, and even complete strangers, and often support their communities with emergency and disaster communications while increasing their personal knowledge of electronics and radio theory. An estimated six million people throughout the world are regularly involved with amateur radio.

The term "amateur" is not a reflection on the skills of the participants, which are often quite advanced; rather, "amateur" indicates that amateur radio communications are not allowed to be made for commercial or money-making purposes.

Though its origins can be traced to at least the late 1800s, amateur radio, as practiced today, began in the 1920s. As with radio in general, the birth of amateur radio was strongly associated with various amateur experimenters and hobbyists. Throughout its history, amateur radio enthusiasts have made significant contributions to science, engineering, industry, and social services. Research by amateur radio operators has founded new industries, built economies, empowered nations, and saved lives in times of emergency.


Radio amateurs use various modes of transmission to communicate. Voice transmissions are most common, with some such as frequency modulation (FM) offering high quality audio, and others such as single sideband (SSB) offering more reliable communications when signals are marginal and band width is restricted.

Radiotelegraphy using Morse code remains popular, particularly on the shortwave bands and for experimental work such as Moonbounce, with its inherent signal-to-noise ratio advantages. Morse, using internationally agreed code groups, also facilitates communications between amateurs who speak different languages. It is also popular with homebrewers as CW-only transmitters are simpler to construct. For many years, demonstrating a proficiency in Morse code was a requirement to obtain amateur licenses for the high frequency bands, but following changes in international regulations in 2003, many countries have now dropped this requirement (the United States Federal Communications Commission did so in 2007)


Modern personal computers have led to a boom in digital modes such as radio teletype, which previously required cumbersome mechanical equipment. Hams led the development of packet radio, which has even used protocols such as TCP/IP since the 1970s. This has since been augmented by more specialized modes such as PSK31 to facilitate real-time, low-power communications on the shortwave bands. 'Echolink' using Voice over IP technology has enabled amateurs to communicate through local internet-connected repeaters and radio nodes, while IRLP has allowed easy linking together of repeaters.