Post by account_disabled on Mar 14, 2024 0:01:08 GMT -8
On the wireless air that were categorized as radio hooliganism there were quite a lot of radio amateurs in the USSR and this hobby itself gained popularity among young people in the s. However attempts to misuse telephony have been made from time to time and some of these attempts have become known to the general public. Payphone AMT Probably the most inhumane experiments were carried out on street payphones the most popular model of which in the late USSR was the AMT developed by the Leningrad Central Industrial.
Payment for calls in such devices was carried out with one twokopeck coin or two coins of kopeck in the Buy Email List nineties coin acceptors were replaced to use tokens. A cunning circuit was installed inside the phone assembled on the basis of a relay which made it possible to dial only threedigit telephone numbers for free to call special services firefighters police ambulance. After dialing the third digit the relay automatically switched the device to the paid service circuit.
At the moment the subscriber answered the coin acceptor lock opened and it also shortcircuited the microphone circuit of the handset at that moment you could hear the subscriber but he could not hear you until a coin was inserted into the machine. The money path had a curved profile to make it difficult to use coins on a string. And the coin acceptors rocker arm was equipped with scales that controlled the mass of the coin if it was less than . grams the reed switch that turned on the microphone did not work. AMT payphone disassembled illustration from the site oldlighting.
Payment for calls in such devices was carried out with one twokopeck coin or two coins of kopeck in the Buy Email List nineties coin acceptors were replaced to use tokens. A cunning circuit was installed inside the phone assembled on the basis of a relay which made it possible to dial only threedigit telephone numbers for free to call special services firefighters police ambulance. After dialing the third digit the relay automatically switched the device to the paid service circuit.
At the moment the subscriber answered the coin acceptor lock opened and it also shortcircuited the microphone circuit of the handset at that moment you could hear the subscriber but he could not hear you until a coin was inserted into the machine. The money path had a curved profile to make it difficult to use coins on a string. And the coin acceptors rocker arm was equipped with scales that controlled the mass of the coin if it was less than . grams the reed switch that turned on the microphone did not work. AMT payphone disassembled illustration from the site oldlighting.
