tone encoder

  1. T

    Motorola Quik Call

    Hello, I am turning to this forum for help. I am looking for the printed Motorola tone sequence chart for Quik call 1 (2+2) paging. I have seen it before and know it exists. I already know all the tone frequencies in Hz that are used. They are either Tone plans A, B, or Z. I can remember...
  2. trunktracking

    Electrosonics International Of Riverside, New Jersey

    All, I know Electrosonics International of Riverside, New Jersey (who formerly produced Instalert Tone Encoders & Receivers) closed several years ago. Does anyone know what happened to their remaining inventory? I am searching for a Vintage Instalert Tone Encoder Model ET-10, if anyone knows...