| Subject | English | Finnish |
| commun. | double tone multiple frequency | äänitaajuusvalinta |
| comp., MS | dual-tone multiple-frequency | DTMF (The signaling system used in telephones with touchtone keypads, in which each digit is associated with two specific frequencies) |
| comp., MS | dual-tone multiple-frequency | äänitaajuusvalinta (The signaling system used in telephones with touchtone keypads, in which each digit is associated with two specific frequencies) |
| commun. | frequency division multiple access | taajuusjakomonikäyttö |
| sat.comm. | frequency division multiple access | FDMA |
| sat.comm. | frequency division multiple access | taajuusjakoinen moniliittymä |
| el. | multiple frequency | monitaajuus |
| commun. | multiple frequency environment,to distribute in a- | lähettää monitaajuusympäristössä |