Pakistan Army Journal

Pakistan Army Journal

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A filter is added (not shown in the diagram) in the circuit to clear out any unwanted noises. ... the telephone at either of two points 5 or 10. ... These coils transmit voice signals over the lines at a high gain low noise audio amplifier. There are number of ways to rewire the telephone e.g. by using a good amplifier somewhere between the telephone exchange, and ... A high voltage pulse of about 100V will now defeat the hookswitch. Method 10. Use infinity transmitter in the headset as theanbsp;...

Title:Pakistan Army Journal
Publisher: - 1983

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