へん復調 ふくちょう装置 そうちではありませんでした
henfukuchōsōchidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 変復調装置

1. Was not a modulator/demodulator.; Was not a modem.

Past/Perfective
Negative
Polite
Formal Register
Computing