|
2-Line Intercom-Cum-Telephone Line Changeover Circuit
|
404 |
|
8 Line Intercommunication using 89c51
|
478 |
|
A simple adapter to record a conversation with a telephone line
|
444 |
|
A simple device to test the phones
|
595 |
|
A simple indicator-busy line
|
604 |
|
A simple intercom
|
630 |
|
Access to the networks of satellite operators
|
679 |
|
Adaptation of imported phones
|
668 |
|
Adapter for AVA
|
1213 |
|
Against pirates telephone
|
688 |
|
Amateur radio FRE-92
|
1094 |
|
Amplifier to a telephone
|
702 |
|
Amplifier to the Spectrum of
|
719 |
|
Another option antenna for cell phone
|
699 |
|
Another phone amplifier
|
684 |
|
Another phone Guard
|
631 |
|
Answering machine announcing the time
|
514 |
|
Anti-ANI
|
698 |
|
Automatic recording of telephone conversation
|
562 |
|
Aviation Intercom
|
755 |
