|
2-Line Intercom-Cum-Telephone Line Changeover Circuit
|
487 |
|
8 Line Intercommunication using 89c51
|
550 |
|
A simple adapter to record a conversation with a telephone line
|
504 |
|
A simple device to test the phones
|
650 |
|
A simple indicator-busy line
|
650 |
|
A simple intercom
|
685 |
|
Access to the networks of satellite operators
|
748 |
|
Adaptation of imported phones
|
748 |
|
Adapter for AVA
|
1265 |
|
Against pirates telephone
|
752 |
|
Amateur radio FRE-92
|
1168 |
|
Amplifier to a telephone
|
770 |
|
Amplifier to the Spectrum of
|
767 |
|
Another option antenna for cell phone
|
777 |
|
Another phone amplifier
|
727 |
|
Another phone Guard
|
676 |
|
Answering machine announcing the time
|
572 |
|
Anti-ANI
|
818 |
|
Automatic recording of telephone conversation
|
622 |
|
Aviation Intercom
|
821 |
