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Вопрос 106

How do you join a contact between two stations using the PACTOR protocol?

  1. Send broadcast packets containing your call sign while in MONITOR mode
  2. Transmit a steady carrier until the PACTOR protocol times out and disconnects
  3. Joining an existing contact is not possible, PACTOR connections are limited to two stationsПравильный ответ
  4. Send a NAK code

Объяснение

PACTOR is a connected link between exactly two stations, with the receiving end acknowledging each block, so there is no mechanism for a third station to join. Other stations can only listen in monitor mode; transmitting a carrier just adds interference.

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Вопрос 106: How do you join a contact between two stations using the… · FCC General Class (Element 3) · Questena