NZART Amateur Examination                     page 7          NZARTX07 Security code 261426

  1. Several stations advise that your FM simplex transmission in the "two metre" band is distorted. The cause might be that:
    1. the transmitter modulation deviation is too high
    2. your antenna is too low
    3. the transmitter has become unsynchronised
    4. your transmitter frequency split is incorrect

  2. To minimise the radiation of one particular harmonic, one can use a:
    1. wave trap in the transmitter output
    2. resistor
    3. high pass filter in the transmitter output
    4. filter in the receiver lead

  3. A spurious transmission from a transmitter is:
    1. an unwanted emission unrelated to the output signal frequency
    2. an unwanted emission that is harmonically related to the modulating audio frequency
    3. generated at 50 Hz
    4. the main part of the modulated carrier

  4. The following should always be included as a standard protection device in any power supply:
    1. a saturating transformer
    2. a fuse in the mains lead
    3. a zener diode bridge limiter
    4. a fuse in the filter capacitor negative lead

  5. The block marked 'Regulator' in the diagram is to:
    1. regulate the incoming mains voltage to a constant value
    2. ensure that the output voltage never exceeds a dangerous value
    3. keep the incoming frequency constant at 50 Hz
    4. keep the output voltage at a constant value

  6. The accepted way to announce that you are listening to a VHF repeater is:
    1. "hello 6695, this is ZL2ZZZ listening"
    2. "calling 6695, 6695, 6695 from ZL2ZZZ"
    3. "6695 from ZL2ZZZ"
    4. "ZL2ZZZ listening on 6695"
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