|
2-Line Intercom-Cum-Telephone Line Changeover Circuit
|
821 |
|
8 Line Intercommunication using 89c51
|
844 |
|
A simple adapter to record a conversation with a telephone line
|
781 |
|
A simple device to test the phones
|
966 |
|
A simple indicator-busy line
|
923 |
|
A simple intercom
|
1017 |
|
Access to the networks of satellite operators
|
1060 |
|
Adaptation of imported phones
|
1047 |
|
Adapter for AVA
|
1702 |
|
Against pirates telephone
|
1060 |
|
Amateur radio FRE-92
|
1486 |
|
Amplifier to a telephone
|
1067 |
|
Amplifier to the Spectrum of
|
1035 |
|
Another option antenna for cell phone
|
1040 |
|
Another phone amplifier
|
1029 |
|
Another phone Guard
|
949 |
|
Answering machine announcing the time
|
818 |
|
Anti-ANI
|
1230 |
|
Automatic recording of telephone conversation
|
915 |
|
Aviation Intercom
|
1157 |
