NZART Amateur Examination                     page 8          NZARTX07 Security code 261426

  1. The "National System" is:
    1. the legal licensing standard of Amateur operation in New Zealand
    2. a series of nationwide amateur radio linked repeaters in the 70 cm band
    3. the official New Zealand repeater band plan
    4. A nationwide emergency communications procedure

  2. Many receivers have both RF and AF gain controls. These allow the operator to:
    1. vary the receiver frequency and AM transmitter frequency independently
    2. vary the low and high frequency audio gain independently
    3. vary the receiver's "real" and "absolute" frequencies independently
    4. vary the gain of the radio frequency and audio frequency amplifier stages independently

  3. The "Q" signal "are you busy?" is:
    1. QRM?
    2. QRL?
    3. QRT?
    4. QRZ?

  4. The characteristic impedance of a transmission line is determined by the:
    1. length of the line
    2. load placed on the line
    3. physical dimensions and relative positions of the conductors
    4. frequency at which the line is operated

  5. If an antenna feedline must pass near grounded metal objects, the following type should be used:
    1. 75 ohm twinlead
    2. 300 ohm twinlead
    3. 600 ohm open-wire
    4. coaxial cable

  6. The approximate physical length of a half-wave antenna for a frequency of 1000 kHz is:
    1. 300 metres
    2. 600 metres
    3. 150 metres
    4. 30 metres

  7. The centre impedance of a 'half-wave' dipole in 'free space' is approximately:
    1. 52 ohm
    2. 73 ohm
    3. 100 ohm
    4. 150 ohm
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