特定 とくてい しょう電力 でんりょく無線 むせん ではありませんでした
tokutei shō denryoku musenkidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 特定省電力無線機

1. Was not a specific low-power radio.; Was not a designated low-power wireless device.

Past/Perfective
Negative
Polite
Formal Register