無線 むせん呼出 よびだし符号 ふごうじゃありませんでした
musen'yobidashifugōjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 無線呼出符号

1. It was not a call sign.; It wasn't a radio call sign.

Past/Perfective
Negative
Polite
Terminal Form