2-Phone sound enhancement
3-Annoying phone navigation
Step 1: Circuit , PCB , Components Required
R3- 33 K
C1- 330 pf
C2- 1 nf
C3- 47 pf
C4- 12 pf
Step 2: the Beginning and Soldering
Step 3: How Do It Work ↓↓↓
and connect two wire to IN and OUT too.
now you should plug the circuit to telephone line and connect the OUT to telephone.
set up the radio when the telephone ring without answer
the telephone on radio you can
hear the voice of the annoying.
Step 4: If It Dont Work :-( ↓↓↓↓
Excuse me my english is not very good. :-/