armchair copy

名词 n.

英文释义

名词 n.
  1. Perfectly clear reception. uncountable
    — In commercial broadcasting, a S/N ratio of + 60 dB is not uncommon, but most amateur signals (except for "armchair copy" situations) run in the range from +3 to +20 dB.
0 次浏览 数据来源: Wiktionary