|
2-Line Intercom-Cum-Telephone Line Changeover Circuit
|
314 |
|
8 Line Intercommunication using 89c51
|
381 |
|
A simple adapter to record a conversation with a telephone line
|
362 |
|
A simple device to test the phones
|
495 |
|
A simple indicator-busy line
|
519 |
|
A simple intercom
|
524 |
|
Access to the networks of satellite operators
|
582 |
|
Adaptation of imported phones
|
580 |
|
Adapter for AVA
|
848 |
|
Against pirates telephone
|
583 |
|
Amateur radio FRE-92
|
964 |
|
Amplifier to a telephone
|
616 |
|
Amplifier to the Spectrum of
|
625 |
|
Another option antenna for cell phone
|
556 |
|
Another phone amplifier
|
600 |
|
Another phone Guard
|
553 |
|
Answering machine announcing the time
|
443 |
|
Anti-ANI
|
592 |
|
Automatic recording of telephone conversation
|
472 |
|
Aviation Intercom
|
633 |
