Practise multiple-choice questions

 

Sample examination 2, paper 1

        Licensing conditions, transmitter interference and electromagnetic compatibility

 

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 1.        Which of the following is not defined as a user service:

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2.        An Amateur Licence A requires:  

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 3.        The nationality requirement for holding an amateur licence in the UK is: 

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4.        As well as amateur frequency transmissions, the licence allows reception of:  

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5.        Which of the following occurrences need not be entered into the station log?  

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6.        The callsign prefix GD should always be used whenever the station is being operated from:  

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7.        An English station while cycling in Wales should use the callsign:  

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8.        The 10 metre band lies between:  

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9.        The licence requires that the purity of the transmitter output should be checked:  

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10.      In the UK, a licensee may receive messages from an overseas amateur on a frequency band not specified in the first column of the schedule as long as the licensee:  

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11.       Time in the log book must always be in:  

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12.      When the station is used from a temporary location and the Radio Investigation Service not informed, the location must be:  

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13.    When using phonetics the licence document specifies that the phonetic alphabet:  

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14.    The amateur licence can be revoked by a broadcast by:  

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15.    Codes and abbreviations may be used by the licensee as long as: 

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16.    Over-modulation of an AM signal is likely to cause:  

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17.    Power supplies to RF power amplifiers should:  

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18.    If an L-C oscillator is used to generate directly a signal at 14.05MHz for a CW transmitter and it drifts by –1% it will:  

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19.    To check the calibration of a transceiver with a VFO at the band edges, the minimum equipment needed is: 

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20.    Parasitic oscillations can cause interference. They are: 

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21.    Any non-linear device will produce:  

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22.    To minimise unwanted radiation of sub-harmonics and harmonics, a VHF transmitter should be followed by: 

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23.    A domestic receiver, having an IF of 455kHz and receiving a signal on 945kHz, experiences strong breakthrough from someone on the 160m band. This could be caused by second-channel interference of:  

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24.    Which of the following filter characteristics represents a filter for following an all-band HF transceiver?  

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25.    Spurious resonances may occur in decoupling circuits. This is due to:  

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26.    If the coil in a VFO has no former, then vibrations:  

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27.    So as not to cause unnecessary sideband splatter the percentage modulation of an AM signal must be kept below:  

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28.    The minimum equipment to check for harmonic radiation from a transmitter is:  

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29.    An ammeter in the PA stage of a transmitter shows slight fluctuations when the transmitter is not being keyed. This possibly indicates: 

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30.    The station shall be constructed and maintained so as: 

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31.    The type of interference caused by a transmitter can be classified as:  

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32.    The fifth harmonic of a 145MHz transmission lies in:

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33.    A 435MHz high-gain transmitting antenna points right at a UHF TV receiving antenna. This could cause: 

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34.    Pick-up in the IF stage of a TV set usually results in: 

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35.    If the mains earth is used as an RF earth, this could be prone to causing:  

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36.    Capacitors used for bypassing at RF should be:  

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37.    Which of the following would be useful in rejecting an unwanted signal at the input of a receiver?  

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38.    A braid-breaking choke in a TV antenna downlead will block: 

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39.    A corroded connector on a neighbour's TV receiving antenna may cause:  

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40.    A radio transmitting system has an ERP of 225W. At what distance away is the field strength 0.5V/m?  

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41.    To minimise RF going back into the mains, which of the following could be fitted in the mains input of a piece of equipment?  

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42.     If an antenna runs close and parallel to an overhead 240V power line, there may be the possibility of:  

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 43.    A transmitter is connected by a very short coaxial cable to a 6dB collinear antenna. When the output power to the antenna is reduced to 5W no more interference is caused to a neighbour's hi-fi system. This corresponds to an effective radiated power of: 

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44.    The best place for an HF beam to minimise interference for an amateur living in a semi-detached house is:  

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45.    A neighbour complains of breakthrough to their television but says it goes when they disconnect the antenna. This also coincides with your transmission times. As a first step:  

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