He was delighted to bring home $35 a week playing 78 rpm records and 16-inch transcription discs.

A number of these broadcasts were preserved on transcription discs or magnetic tape.

In 1940, vinyl was used as a record material, mostly commercially for transcription discs.

By around 1947, the 78rpm discs were replaced with 16-inch transcription discs running at 33 rpm.

Running at a sufficiently high speed, it could achieve higher fidelity than both electrical transcription discs and magnetic wire.

In 1934, Pyral created a new type of transcription disc.

Many of the programs were preserved on transcription discs or magnetic tape.

By the middle of the 1930s, Sam was spending much of his time cutting transcription discs.

A transcription disc is a special phonograph record intended for, or recorded from, a radio broadcast.

ABC agreed to let him use transcription discs for the 1946-47 season, but listeners complained about the sound quality.