|
2-Line Intercom-Cum-Telephone Line Changeover Circuit
|
226 |
|
8 Line Intercommunication using 89c51
|
218 |
|
A simple adapter to record a conversation with a telephone line
|
278 |
|
A simple device to test the phones
|
400 |
|
A simple indicator-busy line
|
357 |
|
A simple intercom
|
424 |
|
Access to the networks of satellite operators
|
406 |
|
Adaptation of imported phones
|
430 |
|
Adapter for AVA
|
514 |
|
Against pirates telephone
|
493 |
|
Amateur radio FRE-92
|
688 |
|
Amplifier to a telephone
|
438 |
|
Amplifier to the Spectrum of
|
491 |
|
Another option antenna for cell phone
|
406 |
|
Another phone amplifier
|
400 |
|
Another phone Guard
|
405 |
|
Answering machine announcing the time
|
354 |
|
Anti-ANI
|
457 |
|
Automatic recording of telephone conversation
|
391 |
|
Aviation Intercom
|
443 |
