CHALLANGES

**The first difficulty which we come up with was the finding proper inductor for the Medium Wave AM receiver. We first tried to make the inductor manually with turning the magnet wire with air core. We measured the inductance value at every step. However, we could not able to make sufficient inductance value. Then, we found an old radio to take its specially designed medium wave inductor coil with a ferrite rod. Therefore we overcome this difficulty.



**The second problem which we come up with was about the variable capacitor. The variable capacitors which are available on the market nowadays are not suitable in a two ways. The first one is about their capacitance range which is not sufficient enough for the AM receiver’s tuner part. The second one is that they are not easily adjustable. Because of these reasons we had to find the variable capacitor from an old radio. Since we had an old radio we overcame this problem by taking its variable capacitor which is not only gives desired capacitance value but also easily adjustable.