自動 じどう方向 ほうこう探知 たんち じゃなかったです
jidōhōkōtanchikijanakattadesu

Noun
Desu Copula

The polite, past negative form of 自動方向探知機

1. Wasn't an automatic direction finder.; Wasn't a self-steering device.

Past/Perfective
Negative
Polite
Casual Register