QuestenaՎարժանք, որը ցույց է տալիս՝ ինչ կրկնել հաջորդիվ
Հարց 349

What is indicated on a waterfall display by one or more vertical lines on either side of a data mode or RTTY signal?

  1. Long path propagation
  2. Backscatter propagation
  3. Insufficient modulation
  4. OvermodulationՃիշտ պատասխան

Բացատրություն

Extra vertical lines flanking a data signal are splatter: distortion sidebands produced when audio drive into the transmitter is too high and a stage is pushed out of its linear range. Insufficient modulation would produce a weak signal, not additional ones.

Շարունակեք այս թեստով

Սկսել վարժանքը
Հարց 349: What is indicated on a waterfall display by one or more… · FCC General Class (Element 3) · Questena