The TA-182/U converted 20 Hz ringing signals to either 1225 Hz. or 1600 Hz. ringing signals. It also converted 1225 Hz or 1600 Hz ringing signals to 20 Hz. It was used to provide signaling over circuits which will not pass 20 Hz ringing signals. The TA-182/U has been replaced by the CV-425/U and CV-1548/G.
- TM 11-2137 Telephone-Telegraphe Convertor TA-182/U, 2 Apr. 1952