着発 ちゃくはつ信管 しんかんじゃなかったです
chakuhatsushinkanjanakattadesu

Noun
Desu Copula

The polite, past negative form of 着発信管

1. Wasn't transmitting.; Wasn't broadcasting.; Wasn't sending.

Past/Perfective
Negative
Polite
Casual Register
Military