NZART Amateur Examination                     page 10          NZARTX07 Security code 270029

  1. A neighbour's stereo system is suffering RF break-through. One possible cure is to:
    1. put a ferrite bead on the transmitter output lead
    2. put a capacitor across the transmitter output
    3. use open-wire feeders to the antenna
    4. use screened wire for the loudspeaker leads

  2. A low-pass filter for a high frequency transmitter output would:
    1. attenuate frequencies above 30 MHz
    2. pass audio frequencies below 3 kHz
    3. attenuate frequencies below 30 MHz
    4. pass audio frequencies above 3 kHz

  3. A high-pass filter attenuates:
    1. a band of frequencies in the VHF region
    2. all except a band of VHF frequencies
    3. high frequencies but not low frequencies
    4. low frequencies but not high frequencies

  4. The following communication mode is generally used for connecting to a VHF packet radio bulletin board:
    1. SSB
    2. AM
    3. FM
    4. DSB