|
2-Line Intercom-Cum-Telephone Line Changeover Circuit
|
560 |
|
8 Line Intercommunication using 89c51
|
598 |
|
A simple adapter to record a conversation with a telephone line
|
560 |
|
A simple device to test the phones
|
710 |
|
A simple indicator-busy line
|
707 |
|
A simple intercom
|
759 |
|
Access to the networks of satellite operators
|
805 |
|
Adaptation of imported phones
|
793 |
|
Adapter for AVA
|
1330 |
|
Against pirates telephone
|
823 |
|
Amateur radio FRE-92
|
1243 |
|
Amplifier to a telephone
|
829 |
|
Amplifier to the Spectrum of
|
826 |
|
Another option antenna for cell phone
|
824 |
|
Another phone amplifier
|
788 |
|
Another phone Guard
|
736 |
|
Answering machine announcing the time
|
624 |
|
Anti-ANI
|
944 |
|
Automatic recording of telephone conversation
|
687 |
|
Aviation Intercom
|
899 |
