| Subject | English | German |
| tech. | AF -audio frequency | Tonfrequenz |
| tech. | AF -audio frequency | Niederfrequenz |
| gen. | audio frequencies | Tonfrequenzen |
| gen. | audio frequency | Tonfrequenz (AF) |
| gen. | audio frequency AF | Tonfrequenz |
| gen. | audio frequency AF | Niederfrequenz (NF) |
| telecom. | audio frequency | Sprechfrequenz |
| tech. | audio frequency | Niederfrequenz (AF) |
| commun. | audio frequency | Schallfrequenz |
| tech. | audio frequency | Tonfrequenz |
| tech. | audio frequency | Hörfrequenz |
| tech. | audio frequency | Audiofrequenz |
| telecom. | audio frequency | Sprachfrequenz |
| tech. | audio frequency amplifier | Tonfrequenzverstaerker |
| commun. | audio frequency amplifier | Niederfrequenzverstärker |
| tech. | audio frequency amplifier | Niederfrequenz-verstaerker |
| el. | audio frequency band | Tonfrequenzband |
| el. | audio frequency band GB | Tonfrequenzband |
| tech. | audio frequency bandpass filter | Niederfrequenzpassfilter |
| tech. | audio frequency chopper | Tonfrequenzzerhacker |
| tech. | audio frequency current | Sprechstrom |
| tech. | audio frequency in frequency modulation | Niederfrequenz in der Frequenzmodulation |
| commun., el. | Audio Frequency Induction Loop | Schwerhörigenschleife |
| tech. | audio frequency power | Tonfrequenzleistung |
| el. | audio frequency protection ratio | NF-Schutzverhältnis |
| el. | audio frequency protection ratio | Niederfrequenzschutzverhältnis |
| tech. | audio frequency range | Niederfrequenzbereich |
| tech. | audio frequency range | Tonfrequenzbereich |
| tech. | audio frequency range | Hoerfrequenzbereich |
| commun. | audio frequency response | Tonfrequenzwiedergabetreue |
| gen. | audio frequency shift keying | Niederfrequenzumtastung |
| commun. | audio frequency shift keying | Tonfrequenzumtastung |
| commun., IT | audio frequency signaling | Zeichengabe mit Tonfrequenz |
| commun., IT | audio frequency signalling | Zeichengabe mit Tonfrequenz |
| el. | audio frequency signal-to-interference ratio | Niederfrequenzstörabstand |
| tech. | audio frequency spectrograph | Tonfrequenz-Spektrograph |
| meas.inst. | audio frequency switch | Niederfrequenzschalter |
| commun. | audio frequency telegraphy | Wechselstrom-Telegraphie |
| commun. | audio frequency telegraphy | Tonfrequenz-Uebertragung |
| tech. | audio frequency telegraphy | Tonfrequenz-Telegraphie |
| tech. | audio frequency transformer | Niederfrequenzuebertrager |
| tech. | audio frequency transformer | Sprechtransformator |
| tech. | audio frequency transformer | Tonfrequenzuebertrager |
| gen. | audio frequency transformer | Niederfrequenztransformator |
| tech. | audio frequency unit | Niederfrequenzteil |
| meas.inst. | audio-frequency | Hörfrequenz |
| el. | audio-frequency amplier | Tonfrequenzverstaerker |
| tech. | audio-frequency amplification stage | Niederfrequenzverstaerkerstuefe |
| el. | audio-frequency amplifier | NF-Verstärker |
| commun., el. | audio-frequency amplifier | Niederfrequenz-Verstaerker |
| el. | audio-frequency amplifier | Nf-Verstärker |
| el. | audio-frequency amplifier | Niederfrequenzverstärker |
| phys. | audio-frequency amplifier | Tonfrequenzverstärker |
| phys. | audio-frequency analyzer | Tonfrequenzanalysator |
| el. | audio-frequency band | Tonfrequenzband |
| el. | audio-frequency band splitting combiner for space | Kopplungsgerät zur Satellitenübertragung vn zugeordneten Sprachkanälen |
| IT, el. | audio-frequency bandwidth | Niederfrequenzbandbreite |
| earth.sc., el. | audio-frequency channel | Niederfrequenzkanal |
| IT, el. | audio-frequency characteristic | Niederfrequenzparameter |
| IT, el. | audio-frequency characteristic | Niederfrequenzcharakteristik |
| automat. | audio-frequency circuit | Niederfrequenzkreis |
| meas.inst. | audio-frequency current | tonfrequenter Strom |
| commun. | audio-frequency electric amplifier | elektrischer Tonfrequenzverstärker |
| meas.inst. | audio-frequency filter | Niederfrequenzfilter |
| microel. | audio-frequency filter | Tonfrequenzfilter |
| meas.inst. | audio-frequency filter frequency | Niederfrequenzfilter |
| IT, earth.sc. | audio-frequency filtering | Niederfrequenzsiebung |
| el. | audio-frequency generator | NF-Generator |
| el. | audio-frequency generator | Niederfrequenzgenerator |
| el. | audio-frequency generator | Tonfrequenzgenerator |
| el. | audio-frequency generator | Niederfrequenz-Generator |
| el. | audio-frequency generator | Tongenerator |
| automat. | audio-frequency generator | Tonfrequenzoszillator |
| IT, el. | audio-frequency input | Niederfrequenzeingang |
| IT, el. | audio-frequency level | Niederfrequenzpegel |
| IT, el. | audio-frequency level | NF-Pegel |
| meas.inst. | audio-frequency meter | Tonfrequenzmesser |
| el. | audio-frequency modulating signal | Niederfrequenzmodulationssignal |
| el. | audio-frequency modulating signal | NF-Modulationssignal |
| automat. | audio-frequency multiplex system | Tonfrequenzmultiplexsystem |
| el. | audio-frequency oscillator | Niederfrequenz-Generator |
| el. | audio-frequency oscillator | Niederfrequenzgenerator |
| el. | audio-frequency oscillator | Tonfrequenzgenerator |
| el. | audio-frequency oscillator | NF-Generator |
| el. | audio-frequency oscillator | Tongenerator |
| IT, el. | audio-frequency output | Niederfrequenzausgang |
| IT, el. | audio-frequency output | NF-Ausgang |
| el. | audio-frequency output signal | NF-Ausgangssignal |
| el. | audio-frequency output signal | Niederfreqenzausgangssignal |
| IT, el. | audio-frequency parameter | Niederfrequenzcharakteristik |
| IT, el. | audio-frequency parameter | Niederfrequenzparameter |
| radio | audio-frequency protection ratio | Tonfrequenz-Schutzabstand |
| phys. | audio-frequency range | Tonfrequenzbereich |
| phys. | audio-frequency range | Hörfrequenzbereich |
| opt. | audio-frequency region | Tonfrequenzbereich |
| opt. | audio-frequency region | Niederfrequenzbereich |
| opt. | audio-frequency region | Hörfrequenzbereich |
| earth.sc., el. | audio-frequency response | Niederfrequenzansprechvermögen |
| earth.sc., el. | audio-frequency response | NF-Ansprechvermögen |
| tech. | audio-frequency signal generator | Niederfrequenz-Messsender |
| el. | audio-frequency signal-to-interference ratio | Niederfrequenzstörabstand |
| radio | audio-frequency signal-to-interference ratio | Tonfrequenz-Störabstand |
| phys. | audio-frequency spectrograph | Tonfrequenzspektrograph |
| meas.inst. | audio-frequency spectrometer | Tonfrequenzspektrometer |
| el. | audio-frequency stage | Nf-Verstärker |
| el. | audio-frequency stage | NF-Stufe |
| el. | audio-frequency stage | NF-Verstärker |
| el. | audio-frequency stage | Niederfrequenzstufe |
| phys. | audio-frequency standard | Tonfrequenznormal |
| el. | audio-frequency system | Tonfrequenzanlage |
| el. | audio-frequency system | Tonfrequenzgerät |
| commun. | audio-frequency tone | NF-Ton |
| commun. | audio-frequency tone | Niederfrequenzton |
| IT, transp. | audio-frequency track circuit | Tonfrequenzkreis |
| tech. | audio-frequency transformer | Tonfrequenztransformator |
| meas.inst. | audio-frequency trans-former | Tonfrequenzübertrager |
| earth.sc., el. | audio-frequency voltage | Niederfrequenzspannung |
| earth.sc., el. | audio-frequency voltage | NF-Spannung |
| automat. | command signals with audio frequency | Kommandosignale mit Tonfrequenz |
| IT, earth.sc. | detection of audio frequency | Erkennen von Tonfrequenzen |
| el. | inversion of the audio frequency band | Sprachbandinvertierung |
| IT | 7 KHz audio frequency | 7 kHz Frequenzband |
| IT | 15 kHz audio frequency | 15 kHz Frequenzband |
| IT | 3.1 kHz audio frequency | 3,1 Hz Niederfrequenzband |
| tech. | modulated at audio-frequency | tonueberlagert |
| tech. | modulated at audio-frequency | tonmoduliert |
| tech. | modulation at audio-frequency | Tonueberlagerung |
| el. | recording audio-frequency current | Tonfrequenzaufzeichnungsstrom |
| commun. | sub-audio frequency | Unterlagerungsfrequenz |
| earth.sc., el. | sub-audio frequency | Unterhörfrequenz |
| commun. | super-audio frequency | Überlagerungsfrequenz |
| commun. | super-audio frequency | Ultraschallfrequenz |
| tech. | ultra audio frequency | Ueberhoerfrequenz |