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CIA
FBI
AID
  
TX-788
Covert listening device - this page is a stub - wanted item

RX-788 is a covert listening device (bug), disguised as a regular Motorola pager, introduced in 1992 by Audio Intelligence Devices (AID) in Fort Lauderdale (Florida, USA). The device has a built-in subminiature microphone that picks up room audio and transmits it on a spot frequency in the VHF radio band between 150 and 174 MHz, using Frequency Modulation (FM) and no encryption.


Video footage
Complete TX-788 kit
In this video, collector Anastasios Pingios shows a complete TX-788 kit from AID in its original yellow storage case. He also provided the ope­ra­ting instructions that can be downloaded below.

Source
YouTube: Spy Collection

{Date
27 July 2022
  

Specifications
  • Device
    Covert listening device (bug)
  • Purpose
    Overhearing, evidence gathering
  • Model
    TX-788
  • Catalog
    95188
  • Manufactuer
    Audio Intellligence Devices (AID)
  • Users
    CIA, FBI, Police
  • Country
    USA
  • Year
    1982
  • Band
    VHF-H
  • Frequency
    150-174 MHz
  • Channels
    1
  • Modulation
    Narrow-band FM
  • Oscillator
    Crystal-controlled
  • Microphone
    Electret (internal)
  • Output
    0.5W
  • Power
    9V
  • Battery
    9V alkaline battery (type 1604)
  • Dimensions
    ?
  • Weight
    ?
Documentation
  1. TX-788 - Operating Instructions
    Audio Intelligence Devices. 95188/G019202. 1982. 1
  1. Document kindly provided by [1].
References
  1. Anastasios Pingios, AID TX-788 Disguise Motorola Pager Audio Transmitter (bug)
    Spy Collection on YouTube. 27 July 2022.
Further information
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© Crypto Museum. Created: Sunday 31 December 2023. Last changed: Wednesday, 02 September 2026 - 18:42 CET.
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