|
2-Line Intercom-Cum-Telephone Line Changeover Circuit
|
455 |
|
8 Line Intercommunication using 89c51
|
521 |
|
A simple adapter to record a conversation with a telephone line
|
475 |
|
A simple device to test the phones
|
625 |
|
A simple indicator-busy line
|
631 |
|
A simple intercom
|
664 |
|
Access to the networks of satellite operators
|
718 |
|
Adaptation of imported phones
|
723 |
|
Adapter for AVA
|
1247 |
|
Against pirates telephone
|
725 |
|
Amateur radio FRE-92
|
1133 |
|
Amplifier to a telephone
|
751 |
|
Amplifier to the Spectrum of
|
746 |
|
Another option antenna for cell phone
|
747 |
|
Another phone amplifier
|
710 |
|
Another phone Guard
|
660 |
|
Answering machine announcing the time
|
548 |
|
Anti-ANI
|
751 |
|
Automatic recording of telephone conversation
|
591 |
|
Aviation Intercom
|
793 |
