Ring Amplifier #2, from the year 2000


 Ring Amplifier #2, from the year 2000, 2


 Ring Amplifier #2, from the year 2000, 3


 Ring Amplifier #2, from the year 2000, 4


T:  picture 1, top

RING AMPLIFIER #2


This device makes it better to hear a ringing telephone.
To do that, a triple tone is switched to a loudspeaker.
The device can be connected everywhere in the phone line
and the ring amplifier is independent of how many phones
there are.


T:  picture 4, bottom

At out of order:
change the poles of the wall-plug.




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