|
2-Line Intercom-Cum-Telephone Line Changeover Circuit
|
731 |
|
8 Line Intercommunication using 89c51
|
764 |
|
A simple adapter to record a conversation with a telephone line
|
719 |
|
A simple device to test the phones
|
884 |
|
A simple indicator-busy line
|
855 |
|
A simple intercom
|
928 |
|
Access to the networks of satellite operators
|
986 |
|
Adaptation of imported phones
|
956 |
|
Adapter for AVA
|
1568 |
|
Against pirates telephone
|
982 |
|
Amateur radio FRE-92
|
1409 |
|
Amplifier to a telephone
|
994 |
|
Amplifier to the Spectrum of
|
963 |
|
Another option antenna for cell phone
|
957 |
|
Another phone amplifier
|
949 |
|
Another phone Guard
|
880 |
|
Answering machine announcing the time
|
758 |
|
Anti-ANI
|
1143 |
|
Automatic recording of telephone conversation
|
852 |
|
Aviation Intercom
|
1068 |
